feat: Added Omni GPT-4 models.

src/libs/Directory.Build.props

@@ -16,7 +16,7 @@
   </ItemGroup>
 
   <PropertyGroup Label="Nuget">
-    <Version>2.0.8</Version>
+    <Version>2.0.9</Version>
     <GeneratePackageOnBuild Condition=" '$(Configuration)' == 'Release' ">true</GeneratePackageOnBuild>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <Authors>tryAGI and contributors</Authors>

src/libs/OpenAI.Constants/Chat/ChatModels.4.Omni.cs

@@ -0,0 +1,33 @@
+// ReSharper disable once CheckNamespace
+namespace OpenAI.Constants;
+
+// ReSharper disable InconsistentNaming
+
+public readonly partial record struct ChatModels
+{
+    /// <summary>
+    /// Our most advanced, multimodal flagship model that’s cheaper and faster than GPT-4 Turbo. <br/>
+    /// According https://platform.openai.com/docs/models/gpt-4o <br/>
+    /// Max input tokens: 128,000 tokens <br/>
+    /// Max output tokens: 4,096 tokens <br/>
+    /// Training data: Up to Oct 2023 <br/>
+    /// </summary>
+    internal const string Gpt4o_2024_05_13Id = "gpt-4o-2024-05-13";
+
+    /// <inheritdoc cref="Gpt4o_2024_05_13Id"/>
+    /// <remarks>Alias - Currently points to gpt-4-1106-vision-preview.</remarks>
+    internal const string Gpt4oId = "gpt-4o";
+
+    /// <inheritdoc cref="Gpt4o_2024_05_13Id"/>
+    public static ChatModels Gpt4o_2024_05_13 { get; } = new(
+        Gpt4o_2024_05_13Id,
+        ContextLength: 128_000,
+        PricePerInputTokenInUsd: 5.0 * UsdPerMillionTokens,
+        PricePerOutputTokenInUsd: 15.0 * UsdPerMillionTokens);
+
+    /// <inheritdoc cref="Gpt4o_2024_05_13Id"/>
+    public static ChatModels Gpt4o { get; } = Gpt4o_2024_05_13 with
+    {
+        Id = Gpt4oId,
+    };
+}