diff --git a/src/apps/OpenApiGenerator.Cli/Commands/GenerateCommand.cs b/src/apps/OpenApiGenerator.Cli/Commands/GenerateCommand.cs
index aea5735043..0d3088e38e 100644
--- a/src/apps/OpenApiGenerator.Cli/Commands/GenerateCommand.cs
+++ b/src/apps/OpenApiGenerator.Cli/Commands/GenerateCommand.cs
@@ -53,6 +53,7 @@ private static async Task HandleAsync(string inputPath, string outputPath, strin
             Namespace: @namespace,
             ClassName: clientClassName,
             NamingConvention: default,
+            JsonSerializerType: default,
             IncludeOperationIds: [],
             GenerateModels: true,
             ModelStyle: default,
diff --git a/src/libs/Directory.Build.props b/src/libs/Directory.Build.props
index 7584e05cbd..305169ccbf 100644
--- a/src/libs/Directory.Build.props
+++ b/src/libs/Directory.Build.props
@@ -39,7 +39,7 @@
   </ItemGroup>
 
   <PropertyGroup Label="Versioning">
-    <Version>0.1.5</Version>
+    <Version>0.2.0</Version>
     <MinVerMinimumMajorMinor>0.1</MinVerMinimumMajorMinor>
     <MinVerTagPrefix>v</MinVerTagPrefix>
     <MinVerDefaultPreReleaseIdentifiers>dev</MinVerDefaultPreReleaseIdentifiers>
diff --git a/src/libs/OpenApiGenerator.Core/Extensions/OpenApiExtensions.cs b/src/libs/OpenApiGenerator.Core/Extensions/OpenApiExtensions.cs
index b68135d1ec..9d8d90aa1f 100644
--- a/src/libs/OpenApiGenerator.Core/Extensions/OpenApiExtensions.cs
+++ b/src/libs/OpenApiGenerator.Core/Extensions/OpenApiExtensions.cs
@@ -2,6 +2,7 @@
 using Microsoft.OpenApi.Any;
 using Microsoft.OpenApi.Models;
 using Microsoft.OpenApi.Readers;
+using OpenApiGenerator.Core.Json;
 using OpenApiGenerator.Core.Models;
 
 namespace OpenApiGenerator.Core.Extensions;
@@ -37,8 +38,11 @@ public static string GetCSharpType(
             (null, _) when schema.Value.OneOf.Any() => ("object", true),
             (null, _) when schema.Value.AllOf.Any() => ("object", true),
 
-            ("string", _) when schema.Value.Enum.Any() =>
+            // Only Newtonsoft.Json supports EnumMemberAttribute
+            ("string", _) when schema.Value.Enum.Any() && settings.JsonSerializerType == JsonSerializerType.NewtonsoftJson =>
                 ($"{(model with { Style = ModelStyle.Enumeration }).ExternalClassName}", true),
+            ("string", _) when schema.Value.Enum.Any() && settings.JsonSerializerType != JsonSerializerType.NewtonsoftJson =>
+                ("string", true),
 
             ("boolean", _) => ("bool", false),
             ("integer", "int32") => ("int", false),
diff --git a/src/libs/OpenApiGenerator.Core/Generation/Sources.Models.cs b/src/libs/OpenApiGenerator.Core/Generation/Sources.Models.cs
index 6cb25ece2b..4a88037b68 100644
--- a/src/libs/OpenApiGenerator.Core/Generation/Sources.Models.cs
+++ b/src/libs/OpenApiGenerator.Core/Generation/Sources.Models.cs
@@ -1,4 +1,5 @@
 using OpenApiGenerator.Core.Extensions;
+using OpenApiGenerator.Core.Json;
 using OpenApiGenerator.Core.Models;
 
 namespace OpenApiGenerator.Core.Generation;
@@ -45,7 +46,10 @@ public static string GenerateEnumerationModel(
         ModelData modelData,
         CancellationToken cancellationToken = default)
     {
-        return $@" 
+        // Only Newtonsoft.Json supports EnumMemberAttribute
+        if (modelData.JsonSerializerType == JsonSerializerType.NewtonsoftJson)
+        {
+            return $@" 
     {modelData.Summary.ToXmlDocumentationSummary(level: 4)}
     [global::System.Runtime.Serialization.DataContract]
     public enum {modelData.ClassName}
@@ -55,6 +59,17 @@ public enum {modelData.ClassName}
         [global::System.Runtime.Serialization.EnumMember(Value=""{property.Id}"")]
         {property.Name},
     ").Inject()}
+    }}".RemoveBlankLinesWhereOnlyWhitespaces();
+        }
+        
+        return $@" 
+    {modelData.Summary.ToXmlDocumentationSummary(level: 4)}
+    public abstract class {modelData.ClassName}
+    {{
+{modelData.Properties.Select(property => @$"
+        {property.Summary.ToXmlDocumentationSummary(level: 8)}
+        public const string {property.Name} = ""{property.Id}"";
+    ").Inject()}
     }}".RemoveBlankLinesWhereOnlyWhitespaces();
     }
     
@@ -62,18 +77,20 @@ public static string GenerateClassModel(
         ModelData modelData,
         CancellationToken cancellationToken = default)
     {
+        var jsonSerializer = modelData.JsonSerializerType.GetSerializer();
+        
         return $@" 
     {modelData.Summary.ToXmlDocumentationSummary(level: 4)}
     public sealed partial class {modelData.ClassName}
     {{
 {modelData.Properties.Select(property => @$"
         {property.Summary.ToXmlDocumentationSummary(level: 8)}
-        [global::System.Text.Json.Serialization.JsonPropertyName(""{property.Id}"")]
+        {jsonSerializer.GeneratePropertyAttribute(property.Id)}
         public{(property.IsRequired ? " required" : "")} {property.Type} {property.Name} {{ get; set; }}{(property.IsRequired || property.DefaultValue == null ? string.Empty : $" = {property.DefaultValue};")}
 ").Inject()}
 
         {"Additional properties that are not explicitly defined in the schema".ToXmlDocumentationSummary(level: 8)}
-        [global::System.Text.Json.Serialization.JsonExtensionData]
+        {jsonSerializer.GenerateExtensionDataAttribute()}
         public global::System.Collections.Generic.IDictionary<string, object> AdditionalProperties {{ get; set; }} = new global::System.Collections.Generic.Dictionary<string, object>();
     }}".RemoveBlankLinesWhereOnlyWhitespaces();
     }
diff --git a/src/libs/OpenApiGenerator.Core/Json/IJsonSerializer.cs b/src/libs/OpenApiGenerator.Core/Json/IJsonSerializer.cs
new file mode 100644
index 0000000000..745afbbfe6
--- /dev/null
+++ b/src/libs/OpenApiGenerator.Core/Json/IJsonSerializer.cs
@@ -0,0 +1,7 @@
+namespace OpenApiGenerator.Core.Json;
+
+public interface IJsonSerializer
+{
+    public string GeneratePropertyAttribute(string id);
+    string GenerateExtensionDataAttribute();
+}
\ No newline at end of file
diff --git a/src/libs/OpenApiGenerator.Core/Json/JsonSerializationTypeExtensions.cs b/src/libs/OpenApiGenerator.Core/Json/JsonSerializationTypeExtensions.cs
new file mode 100644
index 0000000000..ad183f7995
--- /dev/null
+++ b/src/libs/OpenApiGenerator.Core/Json/JsonSerializationTypeExtensions.cs
@@ -0,0 +1,15 @@
+namespace OpenApiGenerator.Core.Json;
+
+public static class JsonSerializationTypeExtensions
+{
+    // Returns the serializer type based on the provided enum value.
+    public static IJsonSerializer GetSerializer(this JsonSerializerType type)
+    {
+        return type switch
+        {
+            JsonSerializerType.SystemTextJson => SystemTextJsonSerializer.Instance,
+            JsonSerializerType.NewtonsoftJson => NewtonsoftJsonSerializer.Instance,
+            _ => throw new NotSupportedException($"Serializer type {type} is not supported.")
+        };
+    }
+}
\ No newline at end of file
diff --git a/src/libs/OpenApiGenerator.Core/Json/JsonSerializerType.cs b/src/libs/OpenApiGenerator.Core/Json/JsonSerializerType.cs
new file mode 100644
index 0000000000..171c62e8c1
--- /dev/null
+++ b/src/libs/OpenApiGenerator.Core/Json/JsonSerializerType.cs
@@ -0,0 +1,7 @@
+namespace OpenApiGenerator.Core.Json;
+
+public enum JsonSerializerType
+{
+    SystemTextJson,
+    NewtonsoftJson,
+}
\ No newline at end of file
diff --git a/src/libs/OpenApiGenerator.Core/Json/NewtonsoftJsonSerializer.cs b/src/libs/OpenApiGenerator.Core/Json/NewtonsoftJsonSerializer.cs
new file mode 100644
index 0000000000..e719936298
--- /dev/null
+++ b/src/libs/OpenApiGenerator.Core/Json/NewtonsoftJsonSerializer.cs
@@ -0,0 +1,16 @@
+namespace OpenApiGenerator.Core.Json;
+
+public class NewtonsoftJsonSerializer : IJsonSerializer
+{
+    public static IJsonSerializer Instance { get; } = new NewtonsoftJsonSerializer();
+
+    public string GeneratePropertyAttribute(string id)
+    {
+        return $"[global::Newtonsoft.Json.JsonProperty(\"{id}\")]";
+    }
+    
+    public string GenerateExtensionDataAttribute()
+    {
+        return "[global::Newtonsoft.Json.JsonExtensionData]";
+    }
+}
\ No newline at end of file
diff --git a/src/libs/OpenApiGenerator.Core/Json/SystemTextJsonSerializer.cs b/src/libs/OpenApiGenerator.Core/Json/SystemTextJsonSerializer.cs
new file mode 100644
index 0000000000..a55500a36a
--- /dev/null
+++ b/src/libs/OpenApiGenerator.Core/Json/SystemTextJsonSerializer.cs
@@ -0,0 +1,16 @@
+namespace OpenApiGenerator.Core.Json;
+
+public class SystemTextJsonSerializer : IJsonSerializer
+{
+    public static IJsonSerializer Instance { get; } = new SystemTextJsonSerializer();
+    
+    public string GeneratePropertyAttribute(string id)
+    {
+        return $"[global::System.Text.Json.Serialization.JsonPropertyName(\"{id}\")]";
+    }
+
+    public string GenerateExtensionDataAttribute()
+    {
+        return "[global::System.Text.Json.Serialization.JsonExtensionData]";
+    }
+}
\ No newline at end of file
diff --git a/src/libs/OpenApiGenerator.Core/Models/ModelData.cs b/src/libs/OpenApiGenerator.Core/Models/ModelData.cs
index c47489eb1f..9152a9dbe6 100644
--- a/src/libs/OpenApiGenerator.Core/Models/ModelData.cs
+++ b/src/libs/OpenApiGenerator.Core/Models/ModelData.cs
@@ -1,6 +1,7 @@
 using System.Collections.Immutable;
 using Microsoft.OpenApi.Models;
 using OpenApiGenerator.Core.Extensions;
+using OpenApiGenerator.Core.Json;
 
 namespace OpenApiGenerator.Core.Models;
 
@@ -12,6 +13,7 @@ public readonly record struct ModelData(
     string Namespace,
     NamingConvention NamingConvention,
     ModelStyle Style,
+    JsonSerializerType JsonSerializerType,
     ImmutableArray<PropertyData> Properties,
     string Summary,
     ImmutableArray<ModelData> AdditionalModels,
@@ -45,6 +47,7 @@ public static ModelData FromKey(
             Parents: parents.ToImmutableArray(),
             Namespace: settings.Namespace,
             NamingConvention: settings.NamingConvention,
+            JsonSerializerType: settings.JsonSerializerType,
             Style: settings.ModelStyle,
             Properties: ImmutableArray<PropertyData>.Empty,
             Summary: string.Empty,
@@ -65,6 +68,7 @@ public static ModelData FromSchema(
             Parents: parents.ToImmutableArray(),
             Namespace: settings.Namespace,
             NamingConvention: settings.NamingConvention,
+            JsonSerializerType: settings.JsonSerializerType,
             Style: settings.ModelStyle,
             Properties: ImmutableArray<PropertyData>.Empty,
             Summary: schema.Value.GetSummary(),
diff --git a/src/libs/OpenApiGenerator.Core/Models/Settings.cs b/src/libs/OpenApiGenerator.Core/Models/Settings.cs
index 5577e68231..c1a3039cb7 100644
--- a/src/libs/OpenApiGenerator.Core/Models/Settings.cs
+++ b/src/libs/OpenApiGenerator.Core/Models/Settings.cs
@@ -1,4 +1,5 @@
 using System.Collections.Immutable;
+using OpenApiGenerator.Core.Json;
 
 namespace OpenApiGenerator.Core.Models;
 
@@ -7,6 +8,7 @@ public readonly record struct Settings(
     string Namespace,
     string ClassName,
     NamingConvention NamingConvention,
+    JsonSerializerType JsonSerializerType,
 
     ImmutableArray<string> IncludeOperationIds,
     
diff --git a/src/libs/OpenApiGenerator/OpenApiGenerator.props b/src/libs/OpenApiGenerator/OpenApiGenerator.props
index 90694b9686..cbd62af94a 100644
--- a/src/libs/OpenApiGenerator/OpenApiGenerator.props
+++ b/src/libs/OpenApiGenerator/OpenApiGenerator.props
@@ -20,6 +20,8 @@
     <CompilerVisibleProperty Include="OpenApiGenerator_ClassName"/>
     <!-- InnerClasses/ConcatNames. Default: InnerClasses -->
     <CompilerVisibleProperty Include="OpenApiGenerator_NamingConvention"/>
+    <!-- SystemTextJson/NewtonsoftJson. Default: SystemTextJson -->
+    <CompilerVisibleProperty Include="OpenApiGenerator_JsonSerializerType"/>
 
     <!-- List of ids separated by ;. Default: Empty(all models) -->
     <CompilerVisibleProperty Include="OpenApiGenerator_IncludeOperationIds"/>
diff --git a/src/libs/OpenApiGenerator/OptionsExtensions.cs b/src/libs/OpenApiGenerator/OptionsExtensions.cs
index 5bc8d1f306..3aa414a96f 100644
--- a/src/libs/OpenApiGenerator/OptionsExtensions.cs
+++ b/src/libs/OpenApiGenerator/OptionsExtensions.cs
@@ -4,6 +4,7 @@
 using Microsoft.CodeAnalysis.Diagnostics;
 using OpenApiGenerator.Core.Models;
 using OpenApiGenerator.Core.Extensions;
+using OpenApiGenerator.Core.Json;
 
 namespace OpenApiGenerator;
 
@@ -30,6 +31,11 @@ public static Settings GetSettings(
                 $"{default(NamingConvention):G}",
                 ignoreCase: true,
                 out var namingConvention) ? namingConvention : default,
+            JsonSerializerType: Enum.TryParse<JsonSerializerType>(
+                options.GetGlobalOption(nameof(Settings.JsonSerializerType), prefix) ??
+                $"{default(JsonSerializerType):G}",
+                ignoreCase: true,
+                out var jsonSerializerType) ? jsonSerializerType : default,
             
             IncludeOperationIds: (options.GetGlobalOption(nameof(Settings.IncludeOperationIds), prefix)?.Split(';') ??
                                    Array.Empty<string>()).ToImmutableArray(),
diff --git a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.CreateModelResponse.g.verified.cs b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.CreateModelResponse.g.verified.cs
index 19679343ee..8a0ccd364a 100644
--- a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.CreateModelResponse.g.verified.cs
+++ b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.CreateModelResponse.g.verified.cs
@@ -13,7 +13,7 @@ public sealed partial class CreateModelResponse
         /// Status creating the model
         /// </summary>
         [global::System.Text.Json.Serialization.JsonPropertyName("status")]
-        public CreateModelResponseStatus? Status { get; set; }
+        public string? Status { get; set; }
 
         /// <summary>
         /// Additional properties that are not explicitly defined in the schema
diff --git a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.CreateModelResponseStatus.g.verified.cs b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.CreateModelResponseStatus.g.verified.cs
index d49c59a40c..72dee32734 100644
--- a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.CreateModelResponseStatus.g.verified.cs
+++ b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.CreateModelResponseStatus.g.verified.cs
@@ -7,23 +7,19 @@ namespace G
     /// <summary>
     /// Status creating the model
     /// </summary>
-    [global::System.Runtime.Serialization.DataContract]
-    public enum CreateModelResponseStatus
+    public abstract class CreateModelResponseStatus
     {
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="creating system layer")]
-        CreatingSystemLayer,
+        public const string CreatingSystemLayer = "creating system layer";
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="parsing modelfile")]
-        ParsingModelfile,
+        public const string ParsingModelfile = "parsing modelfile";
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="success")]
-        Success,
+        public const string Success = "success";
     }
 }
\ No newline at end of file
diff --git a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.GenerateChatCompletionRequest.g.verified.cs b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.GenerateChatCompletionRequest.g.verified.cs
index b8d70461ac..cfa0d6314d 100644
--- a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.GenerateChatCompletionRequest.g.verified.cs
+++ b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.GenerateChatCompletionRequest.g.verified.cs
@@ -29,7 +29,7 @@ public sealed partial class GenerateChatCompletionRequest
         /// Note: it's important to instruct the model to use JSON in the prompt. Otherwise, the model may generate large amounts whitespace.
         /// </summary>
         [global::System.Text.Json.Serialization.JsonPropertyName("format")]
-        public GenerateChatCompletionRequestFormat? Format { get; set; }
+        public string? Format { get; set; }
 
         /// <summary>
         /// Additional model parameters listed in the documentation for the Modelfile such as `temperature`.
diff --git a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.GenerateChatCompletionRequestFormat.g.verified.cs b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.GenerateChatCompletionRequestFormat.g.verified.cs
index 5caa80ec18..c30b96e0d9 100644
--- a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.GenerateChatCompletionRequestFormat.g.verified.cs
+++ b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.GenerateChatCompletionRequestFormat.g.verified.cs
@@ -9,13 +9,11 @@ namespace G
     /// Enable JSON mode by setting the format parameter to json. This will structure the response as valid JSON.
     /// Note: it's important to instruct the model to use JSON in the prompt. Otherwise, the model may generate large amounts whitespace.
     /// </summary>
-    [global::System.Runtime.Serialization.DataContract]
-    public enum GenerateChatCompletionRequestFormat
+    public abstract class GenerateChatCompletionRequestFormat
     {
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="json")]
-        Json,
+        public const string Json = "json";
     }
 }
\ No newline at end of file
diff --git a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.GenerateCompletionRequest.g.verified.cs b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.GenerateCompletionRequest.g.verified.cs
index c67c71c670..53d8aeb7d4 100644
--- a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.GenerateCompletionRequest.g.verified.cs
+++ b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.GenerateCompletionRequest.g.verified.cs
@@ -60,7 +60,7 @@ public sealed partial class GenerateCompletionRequest
         /// Note: it's important to instruct the model to use JSON in the prompt. Otherwise, the model may generate large amounts whitespace.
         /// </summary>
         [global::System.Text.Json.Serialization.JsonPropertyName("format")]
-        public GenerateCompletionRequestFormat? Format { get; set; }
+        public string? Format { get; set; }
 
         /// <summary>
         /// If `true` no formatting will be applied to the prompt and no context will be returned. 
diff --git a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.GenerateCompletionRequestFormat.g.verified.cs b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.GenerateCompletionRequestFormat.g.verified.cs
index 59a27b0291..0bb67917ef 100644
--- a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.GenerateCompletionRequestFormat.g.verified.cs
+++ b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.GenerateCompletionRequestFormat.g.verified.cs
@@ -9,13 +9,11 @@ namespace G
     /// Enable JSON mode by setting the format parameter to json. This will structure the response as valid JSON.
     /// Note: it's important to instruct the model to use JSON in the prompt. Otherwise, the model may generate large amounts whitespace.
     /// </summary>
-    [global::System.Runtime.Serialization.DataContract]
-    public enum GenerateCompletionRequestFormat
+    public abstract class GenerateCompletionRequestFormat
     {
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="json")]
-        Json,
+        public const string Json = "json";
     }
 }
\ No newline at end of file
diff --git a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.Message.g.verified.cs b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.Message.g.verified.cs
index 0cdc4d3717..dc33b93ea5 100644
--- a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.Message.g.verified.cs
+++ b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.Message.g.verified.cs
@@ -13,7 +13,7 @@ public sealed partial class Message
         /// The role of the message
         /// </summary>
         [global::System.Text.Json.Serialization.JsonPropertyName("role")]
-        public required MessageRole Role { get; set; }
+        public required string Role { get; set; }
 
         /// <summary>
         /// The content of the message
diff --git a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.MessageRole.g.verified.cs b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.MessageRole.g.verified.cs
index 76bf0b7247..53cab021e8 100644
--- a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.MessageRole.g.verified.cs
+++ b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.MessageRole.g.verified.cs
@@ -7,23 +7,19 @@ namespace G
     /// <summary>
     /// The role of the message
     /// </summary>
-    [global::System.Runtime.Serialization.DataContract]
-    public enum MessageRole
+    public abstract class MessageRole
     {
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="system")]
-        System,
+        public const string System = "system";
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="user")]
-        User,
+        public const string User = "user";
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="assistant")]
-        Assistant,
+        public const string Assistant = "assistant";
     }
 }
\ No newline at end of file
diff --git a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.PullModelResponse.g.verified.cs b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.PullModelResponse.g.verified.cs
index ae0a02c13f..dae3c60324 100644
--- a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.PullModelResponse.g.verified.cs
+++ b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.PullModelResponse.g.verified.cs
@@ -16,7 +16,7 @@ public sealed partial class PullModelResponse
         /// <br/>Example: pulling manifest
         /// </summary>
         [global::System.Text.Json.Serialization.JsonPropertyName("status")]
-        public PullModelResponseStatus? Status { get; set; }
+        public string? Status { get; set; }
 
         /// <summary>
         /// The model's digest.
diff --git a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.PullModelResponseStatus.g.verified.cs b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.PullModelResponseStatus.g.verified.cs
index ce34fea000..5bfa22a7f6 100644
--- a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.PullModelResponseStatus.g.verified.cs
+++ b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.PullModelResponseStatus.g.verified.cs
@@ -8,38 +8,31 @@ namespace G
     /// Status pulling the model.
     /// <br/>Example: pulling manifest
     /// </summary>
-    [global::System.Runtime.Serialization.DataContract]
-    public enum PullModelResponseStatus
+    public abstract class PullModelResponseStatus
     {
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="pulling manifest")]
-        PullingManifest,
+        public const string PullingManifest = "pulling manifest";
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="downloading digestname")]
-        DownloadingDigestname,
+        public const string DownloadingDigestname = "downloading digestname";
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="verifying sha256 digest")]
-        VerifyingSha256Digest,
+        public const string VerifyingSha256Digest = "verifying sha256 digest";
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="writing manifest")]
-        WritingManifest,
+        public const string WritingManifest = "writing manifest";
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="removing any unused layers")]
-        RemovingAnyUnusedLayers,
+        public const string RemovingAnyUnusedLayers = "removing any unused layers";
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="success")]
-        Success,
+        public const string Success = "success";
     }
 }
\ No newline at end of file
diff --git a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.PushModelResponse.g.verified.cs b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.PushModelResponse.g.verified.cs
index ced3341955..00e6f2d7c6 100644
--- a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.PushModelResponse.g.verified.cs
+++ b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.PushModelResponse.g.verified.cs
@@ -13,7 +13,7 @@ public sealed partial class PushModelResponse
         /// Status pushing the model.
         /// </summary>
         [global::System.Text.Json.Serialization.JsonPropertyName("status")]
-        public PushModelResponseStatus? Status { get; set; }
+        public string? Status { get; set; }
 
         /// <summary>
         /// the model's digest
diff --git a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.PushModelResponseStatus.g.verified.cs b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.PushModelResponseStatus.g.verified.cs
index efaed21f2c..5e34fd2cfa 100644
--- a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.PushModelResponseStatus.g.verified.cs
+++ b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ollama/_#G.Models.PushModelResponseStatus.g.verified.cs
@@ -7,28 +7,23 @@ namespace G
     /// <summary>
     /// Status pushing the model.
     /// </summary>
-    [global::System.Runtime.Serialization.DataContract]
-    public enum PushModelResponseStatus
+    public abstract class PushModelResponseStatus
     {
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="retrieving manifest")]
-        RetrievingManifest,
+        public const string RetrievingManifest = "retrieving manifest";
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="starting upload")]
-        StartingUpload,
+        public const string StartingUpload = "starting upload";
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="pushing manifest")]
-        PushingManifest,
+        public const string PushingManifest = "pushing manifest";
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="success")]
-        Success,
+        public const string Success = "success";
     }
 }
\ No newline at end of file
diff --git a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi/_#G.Models.CreateCompletionRequestModel.g.verified.cs b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi/_#G.Models.CreateCompletionRequestModel.g.verified.cs
index cb41a5e36d..49ef94154b 100644
--- a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi/_#G.Models.CreateCompletionRequestModel.g.verified.cs
+++ b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi/_#G.Models.CreateCompletionRequestModel.g.verified.cs
@@ -7,58 +7,47 @@ namespace G
     /// <summary>
     /// 
     /// </summary>
-    [global::System.Runtime.Serialization.DataContract]
-    public enum CreateCompletionRequestModel
+    public abstract class CreateCompletionRequestModel
     {
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="babbage-002")]
-        Babbage002,
+        public const string Babbage002 = "babbage-002";
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="davinci-002")]
-        Davinci002,
+        public const string Davinci002 = "davinci-002";
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="gpt-3.5-turbo-instruct")]
-        Gpt35TurboInstruct,
+        public const string Gpt35TurboInstruct = "gpt-3.5-turbo-instruct";
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="text-davinci-003")]
-        TextDavinci003,
+        public const string TextDavinci003 = "text-davinci-003";
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="text-davinci-002")]
-        TextDavinci002,
+        public const string TextDavinci002 = "text-davinci-002";
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="text-davinci-001")]
-        TextDavinci001,
+        public const string TextDavinci001 = "text-davinci-001";
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="code-davinci-002")]
-        CodeDavinci002,
+        public const string CodeDavinci002 = "code-davinci-002";
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="text-curie-001")]
-        TextCurie001,
+        public const string TextCurie001 = "text-curie-001";
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="text-babbage-001")]
-        TextBabbage001,
+        public const string TextBabbage001 = "text-babbage-001";
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="text-ada-001")]
-        TextAda001,
+        public const string TextAda001 = "text-ada-001";
     }
 }
\ No newline at end of file
diff --git a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi/_#G.Models.ListModelsResponse.g.verified.cs b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi/_#G.Models.ListModelsResponse.g.verified.cs
index ca3060c96a..9681c95c7b 100644
--- a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi/_#G.Models.ListModelsResponse.g.verified.cs
+++ b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi/_#G.Models.ListModelsResponse.g.verified.cs
@@ -13,7 +13,7 @@ public sealed partial class ListModelsResponse
         /// 
         /// </summary>
         [global::System.Text.Json.Serialization.JsonPropertyName("object")]
-        public required ListModelsResponseObject Object { get; set; }
+        public required string Object { get; set; }
 
         /// <summary>
         /// 
diff --git a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi/_#G.Models.ListModelsResponseObject.g.verified.cs b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi/_#G.Models.ListModelsResponseObject.g.verified.cs
index ae30f0db96..6c675153c6 100644
--- a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi/_#G.Models.ListModelsResponseObject.g.verified.cs
+++ b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi/_#G.Models.ListModelsResponseObject.g.verified.cs
@@ -7,13 +7,11 @@ namespace G
     /// <summary>
     /// 
     /// </summary>
-    [global::System.Runtime.Serialization.DataContract]
-    public enum ListModelsResponseObject
+    public abstract class ListModelsResponseObject
     {
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="list")]
-        List,
+        public const string List = "list";
     }
 }
\ No newline at end of file
diff --git a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi/_#G.Models.Model.g.verified.cs b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi/_#G.Models.Model.g.verified.cs
index 7a2815ba41..c7dfca9540 100644
--- a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi/_#G.Models.Model.g.verified.cs
+++ b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi/_#G.Models.Model.g.verified.cs
@@ -25,7 +25,7 @@ public sealed partial class Model
         /// The object type, which is always "model".
         /// </summary>
         [global::System.Text.Json.Serialization.JsonPropertyName("object")]
-        public required ModelObject Object { get; set; }
+        public required string Object { get; set; }
 
         /// <summary>
         /// The organization that owns the model.
diff --git a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi/_#G.Models.ModelObject.g.verified.cs b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi/_#G.Models.ModelObject.g.verified.cs
index 5ff300b6aa..bfcb15115b 100644
--- a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi/_#G.Models.ModelObject.g.verified.cs
+++ b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi/_#G.Models.ModelObject.g.verified.cs
@@ -7,13 +7,11 @@ namespace G
     /// <summary>
     /// The object type, which is always "model".
     /// </summary>
-    [global::System.Runtime.Serialization.DataContract]
-    public enum ModelObject
+    public abstract class ModelObject
     {
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="model")]
-        Model,
+        public const string Model = "model";
     }
 }
\ No newline at end of file
diff --git a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi_CreateCompletionResponse/_#G.Models.CreateCompletionResponse.g.verified.cs b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi_CreateCompletionResponse/_#G.Models.CreateCompletionResponse.g.verified.cs
index e82bf05d49..0654bd8f65 100644
--- a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi_CreateCompletionResponse/_#G.Models.CreateCompletionResponse.g.verified.cs
+++ b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi_CreateCompletionResponse/_#G.Models.CreateCompletionResponse.g.verified.cs
@@ -44,7 +44,7 @@ public sealed partial class CreateCompletionResponse
         /// The object type, which is always "text_completion"
         /// </summary>
         [global::System.Text.Json.Serialization.JsonPropertyName("object")]
-        public required CreateCompletionResponseObject Object { get; set; }
+        public required string Object { get; set; }
 
         /// <summary>
         /// Usage statistics for the completion request.
diff --git a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi_CreateCompletionResponse/_#G.Models.CreateCompletionResponseChoices.g.verified.cs b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi_CreateCompletionResponse/_#G.Models.CreateCompletionResponseChoices.g.verified.cs
index 6a90f164a8..407e9c6be7 100644
--- a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi_CreateCompletionResponse/_#G.Models.CreateCompletionResponseChoices.g.verified.cs
+++ b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi_CreateCompletionResponse/_#G.Models.CreateCompletionResponseChoices.g.verified.cs
@@ -15,7 +15,7 @@ public sealed partial class CreateCompletionResponseChoices
         /// or `content_filter` if content was omitted due to a flag from our content filters.
         /// </summary>
         [global::System.Text.Json.Serialization.JsonPropertyName("finish_reason")]
-        public required CreateCompletionResponseChoicesFinishReason FinishReason { get; set; }
+        public required string FinishReason { get; set; }
 
         /// <summary>
         /// 
diff --git a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi_CreateCompletionResponse/_#G.Models.CreateCompletionResponseChoicesFinishReason.g.verified.cs b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi_CreateCompletionResponse/_#G.Models.CreateCompletionResponseChoicesFinishReason.g.verified.cs
index 9413e0f121..ce59b093f0 100644
--- a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi_CreateCompletionResponse/_#G.Models.CreateCompletionResponseChoicesFinishReason.g.verified.cs
+++ b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi_CreateCompletionResponse/_#G.Models.CreateCompletionResponseChoicesFinishReason.g.verified.cs
@@ -9,23 +9,19 @@ namespace G
     /// `length` if the maximum number of tokens specified in the request was reached,
     /// or `content_filter` if content was omitted due to a flag from our content filters.
     /// </summary>
-    [global::System.Runtime.Serialization.DataContract]
-    public enum CreateCompletionResponseChoicesFinishReason
+    public abstract class CreateCompletionResponseChoicesFinishReason
     {
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="stop")]
-        Stop,
+        public const string Stop = "stop";
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="length")]
-        Length,
+        public const string Length = "length";
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="content_filter")]
-        ContentFilter,
+        public const string ContentFilter = "content_filter";
     }
 }
\ No newline at end of file
diff --git a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi_CreateCompletionResponse/_#G.Models.CreateCompletionResponseObject.g.verified.cs b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi_CreateCompletionResponse/_#G.Models.CreateCompletionResponseObject.g.verified.cs
index e8add15a88..38545cd89b 100644
--- a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi_CreateCompletionResponse/_#G.Models.CreateCompletionResponseObject.g.verified.cs
+++ b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/OpenAi_CreateCompletionResponse/_#G.Models.CreateCompletionResponseObject.g.verified.cs
@@ -7,13 +7,11 @@ namespace G
     /// <summary>
     /// The object type, which is always "text_completion"
     /// </summary>
-    [global::System.Runtime.Serialization.DataContract]
-    public enum CreateCompletionResponseObject
+    public abstract class CreateCompletionResponseObject
     {
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="text_completion")]
-        TextCompletion,
+        public const string TextCompletion = "text_completion";
     }
 }
\ No newline at end of file
diff --git a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/YamlWithLocalFile/_#G.Models.AsnResponse.g.verified.cs b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/YamlWithLocalFile/_#G.Models.AsnResponse.g.verified.cs
index 878b1973d5..182d42a73a 100644
--- a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/YamlWithLocalFile/_#G.Models.AsnResponse.g.verified.cs
+++ b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/YamlWithLocalFile/_#G.Models.AsnResponse.g.verified.cs
@@ -61,7 +61,7 @@ public sealed partial class AsnResponse
         /// <br/>Example: isp
         /// </summary>
         [global::System.Text.Json.Serialization.JsonPropertyName("type")]
-        public required AsnResponseType Type { get; set; }
+        public required string Type { get; set; }
 
         /// <summary>
         /// 
diff --git a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/YamlWithLocalFile/_#G.Models.AsnResponseType.g.verified.cs b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/YamlWithLocalFile/_#G.Models.AsnResponseType.g.verified.cs
index e7f17a6e17..eed9adefd9 100644
--- a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/YamlWithLocalFile/_#G.Models.AsnResponseType.g.verified.cs
+++ b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/YamlWithLocalFile/_#G.Models.AsnResponseType.g.verified.cs
@@ -7,33 +7,27 @@ namespace G
     /// <summary>
     /// <br/>Example: isp
     /// </summary>
-    [global::System.Runtime.Serialization.DataContract]
-    public enum AsnResponseType
+    public abstract class AsnResponseType
     {
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="isp")]
-        Isp,
+        public const string Isp = "isp";
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="business")]
-        Business,
+        public const string Business = "business";
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="education")]
-        Education,
+        public const string Education = "education";
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="hosting")]
-        Hosting,
+        public const string Hosting = "hosting";
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="inactive")]
-        Inactive,
+        public const string Inactive = "inactive";
     }
 }
\ No newline at end of file
diff --git a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/YamlWithLocalFile/_#G.Models.Company.g.verified.cs b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/YamlWithLocalFile/_#G.Models.Company.g.verified.cs
index d122707d18..17230f3542 100644
--- a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/YamlWithLocalFile/_#G.Models.Company.g.verified.cs
+++ b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/YamlWithLocalFile/_#G.Models.Company.g.verified.cs
@@ -25,7 +25,7 @@ public sealed partial class Company
         /// <br/>Example: isp
         /// </summary>
         [global::System.Text.Json.Serialization.JsonPropertyName("type")]
-        public required CompanyType Type { get; set; }
+        public required string Type { get; set; }
 
         /// <summary>
         /// Additional properties that are not explicitly defined in the schema
diff --git a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/YamlWithLocalFile/_#G.Models.CompanyType.g.verified.cs b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/YamlWithLocalFile/_#G.Models.CompanyType.g.verified.cs
index f99e898e4c..d58f93a61e 100644
--- a/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/YamlWithLocalFile/_#G.Models.CompanyType.g.verified.cs
+++ b/src/tests/OpenApiGenerator.SnapshotTests/Snapshots/YamlWithLocalFile/_#G.Models.CompanyType.g.verified.cs
@@ -7,28 +7,23 @@ namespace G
     /// <summary>
     /// <br/>Example: isp
     /// </summary>
-    [global::System.Runtime.Serialization.DataContract]
-    public enum CompanyType
+    public abstract class CompanyType
     {
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="isp")]
-        Isp,
+        public const string Isp = "isp";
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="business")]
-        Business,
+        public const string Business = "business";
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="education")]
-        Education,
+        public const string Education = "education";
         /// <summary>
         /// 
         /// </summary>
-        [global::System.Runtime.Serialization.EnumMember(Value="hosting")]
-        Hosting,
+        public const string Hosting = "hosting";
     }
 }
\ No newline at end of file
diff --git a/src/tests/OpenApiGenerator.UnitTests/ModelTests.cs b/src/tests/OpenApiGenerator.UnitTests/ModelTests.cs
index 4de8536a11..b4fbd22bd6 100644
--- a/src/tests/OpenApiGenerator.UnitTests/ModelTests.cs
+++ b/src/tests/OpenApiGenerator.UnitTests/ModelTests.cs
@@ -14,6 +14,7 @@ public class ModelTests :
         Namespace: "G",
         ClassName: "Api",
         NamingConvention: default,
+        JsonSerializerType: default,
         IncludeOperationIds: [],
         GenerateModels: true,
         ModelStyle: default,
diff --git a/src/tests/OpenApiGenerator.UnitTests/Snapshots/Ollama/_.verified.txt b/src/tests/OpenApiGenerator.UnitTests/Snapshots/Ollama/_.verified.txt
index 133d72d725..fcc3f581b0 100644
--- a/src/tests/OpenApiGenerator.UnitTests/Snapshots/Ollama/_.verified.txt
+++ b/src/tests/OpenApiGenerator.UnitTests/Snapshots/Ollama/_.verified.txt
@@ -64,7 +64,7 @@ The prompt to generate a response.
       {
         Id: format,
         Name: Format,
-        Type: GenerateCompletionRequestFormat?,
+        Type: string?,
         IsRequired: false,
         Summary:
 The format to return a response in. Currently the only accepted value is json.
@@ -624,7 +624,7 @@ Model names follow a `model:tag` format. Some examples are `orca-mini:3b-q4_1` a
       {
         Id: format,
         Name: Format,
-        Type: GenerateChatCompletionRequestFormat?,
+        Type: string?,
         IsRequired: false,
         Summary:
 The format to return a response in. Currently the only accepted value is json.
@@ -819,7 +819,7 @@ Time in nanoseconds spent generating the response.
       {
         Id: role,
         Name: Role,
-        Type: MessageRole,
+        Type: string,
         IsRequired: true,
         Summary: The role of the message
       },
@@ -1008,7 +1008,7 @@ If `false` the response will be returned as a single response object, otherwise
       {
         Id: status,
         Name: Status,
-        Type: CreateModelResponseStatus?,
+        Type: string?,
         IsRequired: false,
         Summary: Status creating the model
       }
@@ -1337,7 +1337,7 @@ If `false` the response will be returned as a single response object, otherwise
       {
         Id: status,
         Name: Status,
-        Type: PullModelResponseStatus?,
+        Type: string?,
         IsRequired: false,
         Summary:
 Status pulling the model.
@@ -1518,7 +1518,7 @@ If `false` the response will be returned as a single response object, otherwise
       {
         Id: status,
         Name: Status,
-        Type: PushModelResponseStatus?,
+        Type: string?,
         IsRequired: false,
         Summary: Status pushing the model.
       },
diff --git a/src/tests/OpenApiGenerator.UnitTests/Snapshots/OpenAi/_.verified.txt b/src/tests/OpenApiGenerator.UnitTests/Snapshots/OpenAi/_.verified.txt
index 96b14cf978..17dcd976c8 100644
--- a/src/tests/OpenApiGenerator.UnitTests/Snapshots/OpenAi/_.verified.txt
+++ b/src/tests/OpenApiGenerator.UnitTests/Snapshots/OpenAi/_.verified.txt
@@ -73,7 +73,7 @@
       {
         Id: object,
         Name: Object,
-        Type: ListModelsResponseObject,
+        Type: string,
         IsRequired: true,
         Summary: 
       },
@@ -530,7 +530,7 @@ Can be used in conjunction with the `seed` request parameter to understand when
       {
         Id: object,
         Name: Object,
-        Type: CreateCompletionResponseObject,
+        Type: string,
         IsRequired: true,
         Summary: The object type, which is always "text_completion"
       },
@@ -561,7 +561,7 @@ Represents a completion response from the API. Note: both the streamed and non-s
       {
         Id: finish_reason,
         Name: FinishReason,
-        Type: CreateCompletionResponseChoicesFinishReason,
+        Type: string,
         IsRequired: true,
         Summary:
 The reason the model stopped generating tokens. This will be `stop` if the model hit a natural stop point or a provided stop sequence,
@@ -743,7 +743,7 @@ or `content_filter` if content was omitted due to a flag from our content filter
       {
         Id: type,
         Name: Type,
-        Type: ChatCompletionRequestMessageContentPartImageType,
+        Type: string,
         IsRequired: true,
         Summary: The type of the content part.
       },
@@ -779,7 +779,7 @@ or `content_filter` if content was omitted due to a flag from our content filter
       {
         Id: detail,
         Name: Detail,
-        Type: ChatCompletionRequestMessageContentPartImageImageUrlDetail?,
+        Type: string?,
         IsRequired: false,
         DefaultValue: auto,
         Summary:
@@ -866,7 +866,7 @@ Specifies the detail level of the image. Learn more in the [Vision guide](/docs/
       {
         Id: type,
         Name: Type,
-        Type: ChatCompletionRequestMessageContentPartTextType,
+        Type: string,
         IsRequired: true,
         Summary: The type of the content part.
       },
@@ -939,7 +939,7 @@ Specifies the detail level of the image. Learn more in the [Vision guide](/docs/
       {
         Id: role,
         Name: Role,
-        Type: ChatCompletionRequestSystemMessageRole,
+        Type: string,
         IsRequired: true,
         Summary: The role of the messages author, in this case `system`.
       },
@@ -1000,7 +1000,7 @@ The contents of the user message.
       {
         Id: role,
         Name: Role,
-        Type: ChatCompletionRequestUserMessageRole,
+        Type: string,
         IsRequired: true,
         Summary: The role of the messages author, in this case `user`.
       },
@@ -1061,7 +1061,7 @@ The contents of the assistant message. Required unless `tool_calls` or `function
       {
         Id: role,
         Name: Role,
-        Type: ChatCompletionRequestAssistantMessageRole,
+        Type: string,
         IsRequired: true,
         Summary: The role of the messages author, in this case `assistant`.
       },
@@ -1156,7 +1156,7 @@ The contents of the assistant message. Required unless `tool_calls` or `function
       {
         Id: role,
         Name: Role,
-        Type: ChatCompletionRequestToolMessageRole,
+        Type: string,
         IsRequired: true,
         Summary: The role of the messages author, in this case `tool`.
       },
@@ -1215,7 +1215,7 @@ The contents of the assistant message. Required unless `tool_calls` or `function
       {
         Id: role,
         Name: Role,
-        Type: ChatCompletionRequestFunctionMessageRole,
+        Type: string,
         IsRequired: true,
         Summary: The role of the messages author, in this case `function`.
       },
@@ -1354,7 +1354,7 @@ Specifying a particular function via `{"name": "my_function"}` forces the model
       {
         Id: type,
         Name: Type,
-        Type: ChatCompletionToolType,
+        Type: string,
         IsRequired: true,
         Summary: The type of the tool. Currently, only `function` is supported.
       },
@@ -1466,7 +1466,7 @@ Specifying a particular function via `{"type: "function", "function": {"name": "
       {
         Id: type,
         Name: Type,
-        Type: ChatCompletionNamedToolChoiceType,
+        Type: string,
         IsRequired: true,
         Summary: The type of the tool. Currently, only `function` is supported.
       },
@@ -1561,7 +1561,7 @@ Specifying a particular function via `{"type: "function", "function": {"name": "
       {
         Id: type,
         Name: Type,
-        Type: ChatCompletionMessageToolCallType,
+        Type: string,
         IsRequired: true,
         Summary: The type of the tool. Currently, only `function` is supported.
       },
@@ -1656,7 +1656,7 @@ Specifying a particular function via `{"type: "function", "function": {"name": "
       {
         Id: type,
         Name: Type,
-        Type: ChatCompletionMessageToolCallChunkType?,
+        Type: string?,
         IsRequired: false,
         Summary: The type of the tool. Currently, only `function` is supported.
       },
@@ -1765,7 +1765,7 @@ Specifying a particular function via `{"type: "function", "function": {"name": "
       {
         Id: role,
         Name: Role,
-        Type: ChatCompletionResponseMessageRole,
+        Type: string,
         IsRequired: true,
         Summary: The role of the author of this message.
       },
@@ -1867,7 +1867,7 @@ Specifying a particular function via `{"type: "function", "function": {"name": "
       {
         Id: role,
         Name: Role,
-        Type: ChatCompletionStreamResponseDeltaRole?,
+        Type: string?,
         IsRequired: false,
         Summary: The role of the author of this message.
       }
@@ -2222,7 +2222,7 @@ Accepts a JSON object that maps tokens (specified by their token ID in the token
       {
         Id: type,
         Name: Type,
-        Type: CreateChatCompletionRequestResponseFormatType?,
+        Type: string?,
         IsRequired: false,
         DefaultValue: text,
         Summary:
@@ -2504,7 +2504,7 @@ Can be used in conjunction with the `seed` request parameter to understand when
       {
         Id: object,
         Name: Object,
-        Type: CreateChatCompletionResponseObject,
+        Type: string,
         IsRequired: true,
         Summary: The object type, which is always `chat.completion`.
       },
@@ -2533,7 +2533,7 @@ Can be used in conjunction with the `seed` request parameter to understand when
       {
         Id: finish_reason,
         Name: FinishReason,
-        Type: CreateChatCompletionResponseChoicesFinishReason,
+        Type: string,
         IsRequired: true,
         Summary:
 The reason the model stopped generating tokens. This will be `stop` if the model hit a natural stop point or a provided stop sequence,
@@ -2721,7 +2721,7 @@ Can be used in conjunction with the `seed` request parameter to understand when
       {
         Id: object,
         Name: Object,
-        Type: CreateChatCompletionFunctionResponseObject,
+        Type: string,
         IsRequired: true,
         Summary: The object type, which is always `chat.completion`.
       },
@@ -2750,7 +2750,7 @@ Can be used in conjunction with the `seed` request parameter to understand when
       {
         Id: finish_reason,
         Name: FinishReason,
-        Type: CreateChatCompletionFunctionResponseChoicesFinishReason,
+        Type: string,
         IsRequired: true,
         Summary:
 The reason the model stopped generating tokens. This will be `stop` if the model hit a natural stop point or a provided stop sequence, `length` if the maximum number of tokens specified in the request was reached, `content_filter` if content was omitted due to a flag from our content filters, or `function_call` if the model called a function.
@@ -2950,7 +2950,7 @@ The reason the model stopped generating tokens. This will be `stop` if the model
       {
         Id: object,
         Name: Object,
-        Type: ListPaginatedFineTuningJobsResponseObject,
+        Type: string,
         IsRequired: true,
         Summary: 
       }
@@ -3033,7 +3033,7 @@ Can be used in conjunction with the `seed` request parameter to understand when
       {
         Id: object,
         Name: Object,
-        Type: CreateChatCompletionStreamResponseObject,
+        Type: string,
         IsRequired: true,
         Summary: The object type, which is always `chat.completion.chunk`.
       }
@@ -3069,7 +3069,7 @@ Can be used in conjunction with the `seed` request parameter to understand when
       {
         Id: finish_reason,
         Name: FinishReason,
-        Type: CreateChatCompletionStreamResponseChoicesFinishReason?,
+        Type: string?,
         IsRequired: true,
         Summary:
 The reason the model stopped generating tokens. This will be `stop` if the model hit a natural stop point or a provided stop sequence,
@@ -3338,7 +3338,7 @@ We generally recommend altering this or `temperature` but not both.
       {
         Id: object,
         Name: Object,
-        Type: CreateEditResponseObject,
+        Type: string,
         IsRequired: true,
         Summary: The object type, which is always `edit`.
       },
@@ -3374,7 +3374,7 @@ We generally recommend altering this or `temperature` but not both.
       {
         Id: finish_reason,
         Name: FinishReason,
-        Type: CreateEditResponseChoicesFinishReason,
+        Type: string,
         IsRequired: true,
         Summary:
 The reason the model stopped generating tokens. This will be `stop` if the model hit a natural stop point or a provided stop sequence,
@@ -3502,7 +3502,7 @@ The number of images to generate. Must be between 1 and 10. For `dall-e-3`, only
       {
         Id: quality,
         Name: Quality,
-        Type: CreateImageRequestQuality?,
+        Type: string?,
         IsRequired: false,
         DefaultValue: standard,
         Summary:
@@ -3513,7 +3513,7 @@ The quality of the image that will be generated. `hd` creates images with finer
       {
         Id: response_format,
         Name: ResponseFormat,
-        Type: CreateImageRequestResponseFormat?,
+        Type: string?,
         IsRequired: false,
         DefaultValue: url,
         Summary:
@@ -3524,7 +3524,7 @@ The format in which the generated images are returned. Must be one of `url` or `
       {
         Id: size,
         Name: Size,
-        Type: CreateImageRequestSize?,
+        Type: string?,
         IsRequired: false,
         DefaultValue: 1024x1024,
         Summary:
@@ -3535,7 +3535,7 @@ The size of the generated images. Must be one of `256x256`, `512x512`, or `1024x
       {
         Id: style,
         Name: Style,
-        Type: CreateImageRequestStyle?,
+        Type: string?,
         IsRequired: false,
         DefaultValue: vivid,
         Summary:
@@ -3864,7 +3864,7 @@ The number of images to generate. Must be between 1 and 10.
       {
         Id: size,
         Name: Size,
-        Type: CreateImageEditRequestSize?,
+        Type: string?,
         IsRequired: false,
         DefaultValue: 1024x1024,
         Summary:
@@ -3875,7 +3875,7 @@ The size of the generated images. Must be one of `256x256`, `512x512`, or `1024x
       {
         Id: response_format,
         Name: ResponseFormat,
-        Type: CreateImageEditRequestResponseFormat?,
+        Type: string?,
         IsRequired: false,
         DefaultValue: url,
         Summary:
@@ -4036,7 +4036,7 @@ The number of images to generate. Must be between 1 and 10. For `dall-e-3`, only
       {
         Id: response_format,
         Name: ResponseFormat,
-        Type: CreateImageVariationRequestResponseFormat?,
+        Type: string?,
         IsRequired: false,
         DefaultValue: url,
         Summary:
@@ -4047,7 +4047,7 @@ The format in which the generated images are returned. Must be one of `url` or `
       {
         Id: size,
         Name: Size,
-        Type: CreateImageVariationRequestSize?,
+        Type: string?,
         IsRequired: false,
         DefaultValue: 1024x1024,
         Summary:
@@ -4508,7 +4508,7 @@ The default is `text-moderation-latest` which will be automatically upgraded ove
       {
         Id: object,
         Name: Object,
-        Type: ListFilesResponseObject,
+        Type: string,
         IsRequired: true,
         Summary: 
       }
@@ -4562,7 +4562,7 @@ The File object (not file name) to be uploaded.
       {
         Id: purpose,
         Name: Purpose,
-        Type: CreateFileRequestPurpose,
+        Type: string,
         IsRequired: true,
         Summary:
 The intended purpose of the uploaded file.
@@ -4629,7 +4629,7 @@ Use "fine-tune" for [Fine-tuning](/docs/api-reference/fine-tuning) and "assistan
       {
         Id: object,
         Name: Object,
-        Type: DeleteFileResponseObject,
+        Type: string,
         IsRequired: true,
         Summary: 
       },
@@ -4925,7 +4925,7 @@ through the training dataset.
       {
         Id: object,
         Name: Object,
-        Type: ListFineTuningJobEventsResponseObject,
+        Type: string,
         IsRequired: true,
         Summary: 
       }
@@ -5272,7 +5272,7 @@ full cycle through the training dataset.
       {
         Id: object,
         Name: Object,
-        Type: ListFineTunesResponseObject,
+        Type: string,
         IsRequired: true,
         Summary: 
       }
@@ -5324,7 +5324,7 @@ full cycle through the training dataset.
       {
         Id: object,
         Name: Object,
-        Type: ListFineTuneEventsResponseObject,
+        Type: string,
         IsRequired: true,
         Summary: 
       }
@@ -5389,7 +5389,7 @@ ID of the model to use. You can use the [List models](/docs/api-reference/models
       {
         Id: encoding_format,
         Name: EncodingFormat,
-        Type: CreateEmbeddingRequestEncodingFormat?,
+        Type: string?,
         IsRequired: false,
         DefaultValue: float,
         Summary:
@@ -5495,7 +5495,7 @@ The format to return the embeddings in. Can be either `float` or [`base64`](http
       {
         Id: object,
         Name: Object,
-        Type: CreateEmbeddingResponseObject,
+        Type: string,
         IsRequired: true,
         Summary: The object type, which is always "list".
       },
@@ -5613,7 +5613,7 @@ An optional text to guide the model's style or continue a previous audio segment
       {
         Id: response_format,
         Name: ResponseFormat,
-        Type: CreateTranscriptionRequestResponseFormat?,
+        Type: string?,
         IsRequired: false,
         DefaultValue: json,
         Summary:
@@ -5875,14 +5875,14 @@ One of the available [TTS models](/docs/models/tts): `tts-1` or `tts-1-hd`
       {
         Id: voice,
         Name: Voice,
-        Type: CreateSpeechRequestVoice,
+        Type: string,
         IsRequired: true,
         Summary: The voice to use when generating the audio. Supported voices are `alloy`, `echo`, `fable`, `onyx`, `nova`, and `shimmer`. Previews of the voices are available in the [Text to speech guide](/docs/guides/text-to-speech/voice-options).
       },
       {
         Id: response_format,
         Name: ResponseFormat,
-        Type: CreateSpeechRequestResponseFormat?,
+        Type: string?,
         IsRequired: false,
         DefaultValue: mp3,
         Summary:
@@ -6065,7 +6065,7 @@ The format to audio in. Supported formats are `mp3`, `opus`, `aac`, and `flac`.
       {
         Id: object,
         Name: Object,
-        Type: ModelObject,
+        Type: string,
         IsRequired: true,
         Summary: The object type, which is always "model".
       },
@@ -6145,21 +6145,21 @@ The format to audio in. Supported formats are `mp3`, `opus`, `aac`, and `flac`.
       {
         Id: object,
         Name: Object,
-        Type: OpenAIFileObject,
+        Type: string,
         IsRequired: true,
         Summary: The object type, which is always `file`.
       },
       {
         Id: purpose,
         Name: Purpose,
-        Type: OpenAIFilePurpose,
+        Type: string,
         IsRequired: true,
         Summary: The intended purpose of the file. Supported values are `fine-tune`, `fine-tune-results`, `assistants`, and `assistants_output`.
       },
       {
         Id: status,
         Name: Status,
-        Type: OpenAIFileStatus,
+        Type: string,
         IsRequired: true,
         Summary: Deprecated. The current status of the file, which can be either `uploaded`, `processed`, or `error`.
       },
@@ -6308,7 +6308,7 @@ The embedding vector, which is a list of floats. The length of vector depends on
       {
         Id: object,
         Name: Object,
-        Type: EmbeddingObject,
+        Type: string,
         IsRequired: true,
         Summary: The object type, which is always "embedding".
       }
@@ -6404,7 +6404,7 @@ Represents an embedding vector returned by embedding endpoint.
       {
         Id: object,
         Name: Object,
-        Type: FineTuningJobObject,
+        Type: string,
         IsRequired: true,
         Summary: The object type, which is always "fine_tuning.job".
       },
@@ -6425,7 +6425,7 @@ Represents an embedding vector returned by embedding endpoint.
       {
         Id: status,
         Name: Status,
-        Type: FineTuningJobStatus,
+        Type: string,
         IsRequired: true,
         Summary: The current status of the fine-tuning job, which can be either `validating_files`, `queued`, `running`, `succeeded`, `failed`, or `cancelled`.
       },
@@ -6650,7 +6650,7 @@ The number of epochs to train the model for. An epoch refers to one full cycle t
       {
         Id: level,
         Name: Level,
-        Type: FineTuningJobEventLevel,
+        Type: string,
         IsRequired: true,
         Summary: 
       },
@@ -6664,7 +6664,7 @@ The number of epochs to train the model for. An epoch refers to one full cycle t
       {
         Id: object,
         Name: Object,
-        Type: FineTuningJobEventObject,
+        Type: string,
         IsRequired: true,
         Summary: 
       }
@@ -6788,7 +6788,7 @@ The number of epochs to train the model for. An epoch refers to one full cycle t
       {
         Id: object,
         Name: Object,
-        Type: FineTuneObject,
+        Type: string,
         IsRequired: true,
         Summary: The object type, which is always "fine-tune".
       },
@@ -6978,7 +6978,7 @@ The weight to use for loss on the prompt tokens.
       {
         Id: object,
         Name: Object,
-        Type: FineTuneEventObject,
+        Type: string,
         IsRequired: true,
         Summary: 
       }
@@ -7066,7 +7066,7 @@ The weight to use for loss on the prompt tokens.
       {
         Id: object,
         Name: Object,
-        Type: AssistantObjectObject,
+        Type: string,
         IsRequired: true,
         Summary: The object type, which is always `assistant`.
       },
@@ -7411,7 +7411,7 @@ Set of 16 key-value pairs that can be attached to an object. This can be useful
       {
         Id: object,
         Name: Object,
-        Type: DeleteAssistantResponseObject,
+        Type: string,
         IsRequired: true,
         Summary: 
       }
@@ -7510,7 +7510,7 @@ Set of 16 key-value pairs that can be attached to an object. This can be useful
       {
         Id: type,
         Name: Type,
-        Type: AssistantToolsCodeType,
+        Type: string,
         IsRequired: true,
         Summary: The type of tool being defined: `code_interpreter`
       }
@@ -7555,7 +7555,7 @@ Set of 16 key-value pairs that can be attached to an object. This can be useful
       {
         Id: type,
         Name: Type,
-        Type: AssistantToolsRetrievalType,
+        Type: string,
         IsRequired: true,
         Summary: The type of tool being defined: `retrieval`
       }
@@ -7600,7 +7600,7 @@ Set of 16 key-value pairs that can be attached to an object. This can be useful
       {
         Id: type,
         Name: Type,
-        Type: AssistantToolsFunctionType,
+        Type: string,
         IsRequired: true,
         Summary: The type of tool being defined: `function`
       },
@@ -7659,7 +7659,7 @@ Set of 16 key-value pairs that can be attached to an object. This can be useful
       {
         Id: object,
         Name: Object,
-        Type: RunObjectObject,
+        Type: string,
         IsRequired: true,
         Summary: The object type, which is always `thread.run`.
       },
@@ -7687,7 +7687,7 @@ Set of 16 key-value pairs that can be attached to an object. This can be useful
       {
         Id: status,
         Name: Status,
-        Type: RunObjectStatus,
+        Type: string,
         IsRequired: true,
         Summary: The status of the run, which can be either `queued`, `in_progress`, `requires_action`, `cancelling`, `cancelled`, `failed`, `completed`, or `expired`.
       },
@@ -7801,7 +7801,7 @@ Set of 16 key-value pairs that can be attached to an object. This can be useful
       {
         Id: type,
         Name: Type,
-        Type: RunObjectRequiredActionType,
+        Type: string,
         IsRequired: true,
         Summary: For now, this is always `submit_tool_outputs`.
       },
@@ -7875,7 +7875,7 @@ Set of 16 key-value pairs that can be attached to an object. This can be useful
       {
         Id: code,
         Name: Code,
-        Type: RunObjectLastErrorCode,
+        Type: string,
         IsRequired: true,
         Summary: One of `server_error` or `rate_limit_exceeded`.
       },
@@ -8272,7 +8272,7 @@ Set of 16 key-value pairs that can be attached to an object. This can be useful
       {
         Id: type,
         Name: Type,
-        Type: RunToolCallObjectType,
+        Type: string,
         IsRequired: true,
         Summary: The type of tool call the output is required for. For now, this is always `function`.
       },
@@ -8435,7 +8435,7 @@ Set of 16 key-value pairs that can be attached to an object. This can be useful
       {
         Id: object,
         Name: Object,
-        Type: ThreadObjectObject,
+        Type: string,
         IsRequired: true,
         Summary: The object type, which is always `thread`.
       },
@@ -8613,7 +8613,7 @@ Set of 16 key-value pairs that can be attached to an object. This can be useful
       {
         Id: object,
         Name: Object,
-        Type: DeleteThreadResponseObject,
+        Type: string,
         IsRequired: true,
         Summary: 
       }
@@ -8719,7 +8719,7 @@ Set of 16 key-value pairs that can be attached to an object. This can be useful
       {
         Id: object,
         Name: Object,
-        Type: MessageObjectObject,
+        Type: string,
         IsRequired: true,
         Summary: The object type, which is always `thread.message`.
       },
@@ -8740,7 +8740,7 @@ Set of 16 key-value pairs that can be attached to an object. This can be useful
       {
         Id: role,
         Name: Role,
-        Type: MessageObjectRole,
+        Type: string,
         IsRequired: true,
         Summary: The entity that produced the message. One of `user` or `assistant`.
       },
@@ -8871,7 +8871,7 @@ Set of 16 key-value pairs that can be attached to an object. This can be useful
       {
         Id: role,
         Name: Role,
-        Type: CreateMessageRequestRole,
+        Type: string,
         IsRequired: true,
         Summary: The role of the entity that is creating the message. Currently only `user` is supported.
       },
@@ -9012,7 +9012,7 @@ Set of 16 key-value pairs that can be attached to an object. This can be useful
       {
         Id: object,
         Name: Object,
-        Type: DeleteMessageResponseObject,
+        Type: string,
         IsRequired: true,
         Summary: 
       }
@@ -9111,7 +9111,7 @@ Set of 16 key-value pairs that can be attached to an object. This can be useful
       {
         Id: type,
         Name: Type,
-        Type: MessageContentImageFileObjectType,
+        Type: string,
         IsRequired: true,
         Summary: Always `image_file`.
       },
@@ -9185,7 +9185,7 @@ Set of 16 key-value pairs that can be attached to an object. This can be useful
       {
         Id: type,
         Name: Type,
-        Type: MessageContentTextObjectType,
+        Type: string,
         IsRequired: true,
         Summary: Always `text`.
       },
@@ -9266,7 +9266,7 @@ Set of 16 key-value pairs that can be attached to an object. This can be useful
       {
         Id: type,
         Name: Type,
-        Type: MessageContentTextAnnotationsFileCitationObjectType,
+        Type: string,
         IsRequired: true,
         Summary: Always `file_citation`.
       },
@@ -9368,7 +9368,7 @@ Set of 16 key-value pairs that can be attached to an object. This can be useful
       {
         Id: type,
         Name: Type,
-        Type: MessageContentTextAnnotationsFilePathObjectType,
+        Type: string,
         IsRequired: true,
         Summary: Always `file_path`.
       },
@@ -9470,7 +9470,7 @@ Set of 16 key-value pairs that can be attached to an object. This can be useful
       {
         Id: object,
         Name: Object,
-        Type: RunStepObjectObject,
+        Type: string,
         IsRequired: true,
         Summary: The object type, which is always `thread.run.step`.
       },
@@ -9505,14 +9505,14 @@ Set of 16 key-value pairs that can be attached to an object. This can be useful
       {
         Id: type,
         Name: Type,
-        Type: RunStepObjectType,
+        Type: string,
         IsRequired: true,
         Summary: The type of run step, which can be either `message_creation` or `tool_calls`.
       },
       {
         Id: status,
         Name: Status,
-        Type: RunStepObjectStatus,
+        Type: string,
         IsRequired: true,
         Summary: The status of the run step, which can be either `in_progress`, `cancelled`, `failed`, `completed`, or `expired`.
       },
@@ -9601,7 +9601,7 @@ Represents a step in execution of a run.
       {
         Id: code,
         Name: Code,
-        Type: RunStepObjectLastErrorCode,
+        Type: string,
         IsRequired: true,
         Summary: One of `server_error` or `rate_limit_exceeded`.
       },
@@ -9834,7 +9834,7 @@ Set of 16 key-value pairs that can be attached to an object. This can be useful
       {
         Id: type,
         Name: Type,
-        Type: RunStepDetailsMessageCreationObjectType,
+        Type: string,
         IsRequired: true,
         Summary: Always `message_creation`.
       },
@@ -9908,7 +9908,7 @@ Set of 16 key-value pairs that can be attached to an object. This can be useful
       {
         Id: type,
         Name: Type,
-        Type: RunStepDetailsToolCallsObjectType,
+        Type: string,
         IsRequired: true,
         Summary: Always `tool_calls`.
       },
@@ -9983,7 +9983,7 @@ An array of tool calls the run step was involved in. These can be associated wit
       {
         Id: type,
         Name: Type,
-        Type: RunStepDetailsToolCallsCodeObjectType,
+        Type: string,
         IsRequired: true,
         Summary: The type of tool call. This is always going to be `code_interpreter` for this type of tool call.
       },
@@ -10078,7 +10078,7 @@ An array of tool calls the run step was involved in. These can be associated wit
       {
         Id: type,
         Name: Type,
-        Type: RunStepDetailsToolCallsCodeOutputLogsObjectType,
+        Type: string,
         IsRequired: true,
         Summary: Always `logs`.
       },
@@ -10130,7 +10130,7 @@ An array of tool calls the run step was involved in. These can be associated wit
       {
         Id: type,
         Name: Type,
-        Type: RunStepDetailsToolCallsCodeOutputImageObjectType,
+        Type: string,
         IsRequired: true,
         Summary: Always `image`.
       },
@@ -10211,7 +10211,7 @@ An array of tool calls the run step was involved in. These can be associated wit
       {
         Id: type,
         Name: Type,
-        Type: RunStepDetailsToolCallsRetrievalObjectType,
+        Type: string,
         IsRequired: true,
         Summary: The type of tool call. This is always going to be `retrieval` for this type of tool call.
       },
@@ -10284,7 +10284,7 @@ An array of tool calls the run step was involved in. These can be associated wit
       {
         Id: type,
         Name: Type,
-        Type: RunStepDetailsToolCallsFunctionObjectType,
+        Type: string,
         IsRequired: true,
         Summary: The type of tool call. This is always going to be `function` for this type of tool call.
       },
@@ -10379,7 +10379,7 @@ An array of tool calls the run step was involved in. These can be associated wit
       {
         Id: object,
         Name: Object,
-        Type: AssistantFileObjectObject,
+        Type: string,
         IsRequired: true,
         Summary: The object type, which is always `assistant.file`.
       },
@@ -10474,7 +10474,7 @@ An array of tool calls the run step was involved in. These can be associated wit
       {
         Id: object,
         Name: Object,
-        Type: DeleteAssistantFileResponseObject,
+        Type: string,
         IsRequired: true,
         Summary: 
       }
@@ -10580,7 +10580,7 @@ An array of tool calls the run step was involved in. These can be associated wit
       {
         Id: object,
         Name: Object,
-        Type: MessageFileObjectObject,
+        Type: string,
         IsRequired: true,
         Summary: The object type, which is always `thread.message.file`.
       },