diff --git a/app/core/config.py b/app/core/config.py
index 919ae69..4ddb271 100644
--- a/app/core/config.py
+++ b/app/core/config.py
@@ -25,7 +25,7 @@ _BACKEND_ENV = Path(__file__).resolve().parents[2] / "backend" / ".env"
 #
 # The gpt-4o family is excluded on purpose: snapshots before 2024-08-06 lack structured
 # outputs, and distinguishing them by alias is not reliable.
-SUPPORTED_MODEL_PREFIXES: tuple[str, ...] = ("gpt-5", "gpt-4.1", "o3", "o4")
+SUPPORTED_MODEL_PREFIXES: tuple[str, ...] = ("gpt-5", "gpt-4.1", "o3", "o4","gpt-4o-mini")
 
 # "-chat-latest" variants track the ChatGPT product surface rather than the API model
 # line and do not expose reasoning effort.