diff --git a/src/intelligence_layer/core/instruct.py b/src/intelligence_layer/core/instruct.py
index 25fdd0cd8..52033b686 100644
--- a/src/intelligence_layer/core/instruct.py
+++ b/src/intelligence_layer/core/instruct.py
@@ -2,7 +2,12 @@
 
 from pydantic import BaseModel
 
-from intelligence_layer.core.model import CompleteInput, CompleteOutput, ControlModel
+from intelligence_layer.core.model import (
+    CompleteInput,
+    CompleteOutput,
+    ControlModel,
+    LuminousControlModel,
+)
 from intelligence_layer.core.task import Task
 from intelligence_layer.core.tracer.tracer import TaskSpan
 
@@ -15,9 +20,10 @@ class InstructInput(BaseModel):
 
 
 class Instruct(Task[InstructInput, CompleteOutput]):
-    def __init__(self, model: ControlModel) -> None:
+
+    def __init__(self, model: ControlModel | None = None) -> None:
         super().__init__()
-        self._model = model
+        self._model = model or LuminousControlModel()
 
     def do_run(self, input: InstructInput, task_span: TaskSpan) -> CompleteOutput:
         prompt = self._model.to_instruct_prompt(
diff --git a/src/intelligence_layer/core/model.py b/src/intelligence_layer/core/model.py
index c89d9a5d0..541a82476 100644
--- a/src/intelligence_layer/core/model.py
+++ b/src/intelligence_layer/core/model.py
@@ -209,7 +209,7 @@ def __init__(
             "luminous-base-control-20240215",
             "luminous-extended-control-20240215",
             "luminous-supreme-control-20240215",
-        ],
+        ] = "luminous-base-control",
         client: Optional[AlephAlphaClientProtocol] = None,
     ) -> None:
         super().__init__(name, client)