diff --git a/app/cost_estimator.py b/app/cost_estimator.py
index 64b465e..2334b31 100644
--- a/app/cost_estimator.py
+++ b/app/cost_estimator.py
@@ -75,7 +75,7 @@ def estimate_model_cost(model_id: str, total_frames: int, fps: int = 24) -> Dict
     Estimate cost for a specific model.
     
     Args:
-        model_id: Model identifier (e.g., wan2.6-t2v, doubao-seedance-2-0-260128)
+        model_id: Model identifier (e.g., wan2.7-t2v, doubao-seedance-2-0-260128)
         total_frames: Total frames to generate
     
     Returns: