diff --git a/app/core/llm.py b/app/core/llm.py
index 80e14a5..3d49157 100644
--- a/app/core/llm.py
+++ b/app/core/llm.py
@@ -34,6 +34,8 @@ def _api_key_for_model(model: str) -> str | None:
         return settings.ANTHROPIC_API_KEY or None
     if model.startswith("gemini/") or model.startswith("google/"):
         return settings.GOOGLE_API_KEY or None
+    if model.startswith("cerebras/"):
+        return settings.CEREBRAS_API_KEY or None
     if model.startswith("github_copilot/"):
         # GitHub Copilot uses OAuth device-flow tokens managed by LiteLLM.
         # No API key is required; returning None lets LiteLLM handle auth.