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OpenAI gpt-5-chat does not support (encrypted) reasoning #3332

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Merged
merged 1 commit into from
Nov 4, 2025
+5 −2
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OpenAI gpt-5-chat does not support (encrypted) reasoning #3332

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7 changes: 5 additions & 2 deletions pydantic_ai_slim/pydantic_ai/profiles/openai.py
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Original file line number Diff line number Diff line change
Expand Up @@ -62,7 +62,10 @@ def __post_init__(self): # pragma: no cover

def openai_model_profile(model_name: str) -> ModelProfile:
"""Get the model profile for an OpenAI model."""
is_reasoning_model = model_name.startswith('o') or model_name.startswith('gpt-5')
is_gpt_5 = model_name.startswith('gpt-5')
is_o_series = model_name.startswith('o')
is_reasoning_model = is_o_series or (is_gpt_5 and 'gpt-5-chat' not in model_name)

# Check if the model supports web search (only specific search-preview models)
supports_web_search = '-search-preview' in model_name

Expand Down Expand Up @@ -91,7 +94,7 @@ def openai_model_profile(model_name: str) -> ModelProfile:
json_schema_transformer=OpenAIJsonSchemaTransformer,
supports_json_schema_output=True,
supports_json_object_output=True,
supports_image_output=is_reasoning_model or '4.1' in model_name or '4o' in model_name,
supports_image_output=is_gpt_5 or 'o3' in model_name or '4.1' in model_name or '4o' in model_name,
openai_unsupported_model_settings=openai_unsupported_model_settings,
openai_system_prompt_role=openai_system_prompt_role,
openai_chat_supports_web_search=supports_web_search,
Expand Down