Update default model to GPT-5.5 (#746)

README.md

@@ -49,7 +49,7 @@ Choose between [OpenAI](https://openai.com/) or [Anthropic](https://www.anthropi
 | OpenAI    | `gpt-5.4`           | `openai_api_key`    |
 | Anthropic | `claude-sonnet-4-6` | `anthropic_api_key` |
 
-The model is auto-detected based on which API key you provide. Override with the `model` input, or use `review_model` to override PR review only.
+The model is auto-detected based on which API key you provide. Override with the `model` input, for example `gpt-5.5`, or use `review_model` to override PR review only.
 
 ### 🛠️ How It Works
 
@@ -104,8 +104,8 @@ jobs:
           # AI API keys - provide OpenAI OR Anthropic (model auto-detected from key)
           openai_api_key: ${{ secrets.OPENAI_API_KEY }}
           # anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
-          # model: claude-haiku-4-5-20251001  # Optional: override default model
-          # review_model: claude-opus-4-5-20251101  # Optional: override PR review model
+          # model: gpt-5.5  # Optional: override default model
+          # review_model: claude-opus-4-7  # Optional: override PR review model
           brave_api_key: ${{ secrets.BRAVE_API_KEY }} # Used for broken link resolution
 ```
 

actions/utils/openai_utils.py

@@ -30,15 +30,17 @@ MODEL_COSTS = {  # (input, output) per 1M tokens
     "gpt-5.2-2025-12-11": (1.75, 14.00),
     "gpt-5.2-codex": (1.75, 14.00),
     "gpt-5.3-codex": (1.75, 14.00),
+    "gpt-5.5": (5.00, 30.00),
     "gpt-5.4": (2.50, 15.00),
     "gpt-5-nano-2025-08-07": (0.05, 0.40),
     "gpt-5-mini-2025-08-07": (0.25, 2.00),
-    # Anthropic Claude 4.5 models
+    # Anthropic Claude models
     "claude-sonnet-4-5-20250929": (3.00, 15.00),
     "claude-sonnet-4-6": (3.00, 15.00),
     "claude-haiku-4-5-20251001": (1.00, 5.00),
     "claude-opus-4-5-20251101": (5.00, 25.00),
     "claude-opus-4-6": (5.00, 25.00),
+    "claude-opus-4-7": (5.00, 25.00),
 }
 SYSTEM_PROMPT_ADDITION = """Guidance:
   - Ultralytics Branding: Use YOLO11, YOLO26, etc., not YOLOv11, YOLOv26 (only older versions like YOLOv10 have a v).

tests/test_openai_utils.py

@@ -3,6 +3,7 @@
 from unittest.mock import MagicMock, patch
 
 from actions.utils.openai_utils import (
+    OPENAI_MODEL_DEFAULT,
     PR_REVIEW_MODEL_DEFAULT,
     _is_anthropic_model,
     get_response,
@@ -11,12 +12,18 @@ from actions.utils.openai_utils import (
 )
 
 
+def test_default_models():
+    """Test canonical default models."""
+    assert OPENAI_MODEL_DEFAULT == "gpt-5.4"
+    assert PR_REVIEW_MODEL_DEFAULT == "gpt-5.4"
+
+
 def test_is_anthropic_model():
     """Test model provider detection."""
     assert _is_anthropic_model("claude-sonnet-4-6") is True
     assert _is_anthropic_model("claude-haiku-4-5-20251001") is True
-    assert _is_anthropic_model("claude-opus-4-5-20251101") is True
-    assert _is_anthropic_model("gpt-5.4") is False
+    assert _is_anthropic_model("claude-opus-4-7") is True
+    assert _is_anthropic_model("gpt-5.5") is False
     assert _is_anthropic_model("gpt-5-mini-2025-08-07") is False
 
 
@@ -39,9 +46,9 @@ def test_remove_outer_codeblocks():
 
 def test_get_review_model_override():
     """Test review model override logic."""
-    with patch("actions.utils.openai_utils.REVIEW_MODEL", "claude-opus-4-5-20251101"):
-        with patch("actions.utils.openai_utils.MODEL", "gpt-5.4"):
-            assert get_review_model() == "claude-opus-4-5-20251101"
+    with patch("actions.utils.openai_utils.REVIEW_MODEL", "claude-opus-4-7"):
+        with patch("actions.utils.openai_utils.MODEL", "gpt-5.5"):
+            assert get_review_model() == "claude-opus-4-7"
 
 
 def test_get_review_model_fallback():