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fix(responses): read reasoning support from the cost map instead of model-name rules

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mateo-berri 2026-09-05 03:17:11 -07:00
parent 832a05458b
commit d992937900
5 changed files with 31 additions and 7 deletions
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7
litellm/llms/openai/responses/transformation.py
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@ -117,14 +117,7 @@ class OpenAIResponsesAPIConfig(BaseResponsesAPIConfig):
return OpenAIGPT5Config.effort_resolves_to_none(model, effort)
@staticmethod
def _is_o_series_name(model: str) -> bool:
base: Final = model.split("/")[-1]
return len(base) > 1 and base[0] == "o" and base[1].isdigit()
def _supports_reasoning_param(self, model: str) -> bool:
if self._is_gpt_5_model(model=model) or self._is_o_series_name(model=model):
return True
base: Final = model.split("/")[-1]
if base not in litellm.open_ai_chat_completion_models:
return True

4
litellm/model_prices_and_context_window_backup.json
View file

@ -37115,6 +37115,7 @@
"supports_parallel_function_calling": true,
"supports_pdf_input": true,
"supports_prompt_caching": true,
"supports_reasoning": true,
"supports_response_schema": true,
"supports_system_messages": true,
"supports_tool_choice": true,
@ -37155,6 +37156,7 @@
"supports_parallel_function_calling": true,
"supports_pdf_input": true,
"supports_prompt_caching": true,
"supports_reasoning": true,
"supports_response_schema": true,
"supports_system_messages": true,
"supports_tool_choice": true,
@ -37366,6 +37368,7 @@
"supports_parallel_function_calling": true,
"supports_pdf_input": true,
"supports_prompt_caching": true,
"supports_reasoning": true,
"supports_response_schema": true,
"supports_system_messages": true,
"supports_tool_choice": true,
@ -37406,6 +37409,7 @@
"supports_parallel_function_calling": true,
"supports_pdf_input": true,
"supports_prompt_caching": true,
"supports_reasoning": true,
"supports_response_schema": true,
"supports_system_messages": true,
"supports_tool_choice": true,

4
model_prices_and_context_window.json
View file

@ -37115,6 +37115,7 @@
"supports_parallel_function_calling": true,
"supports_pdf_input": true,
"supports_prompt_caching": true,
"supports_reasoning": true,
"supports_response_schema": true,
"supports_system_messages": true,
"supports_tool_choice": true,
@ -37155,6 +37156,7 @@
"supports_parallel_function_calling": true,
"supports_pdf_input": true,
"supports_prompt_caching": true,
"supports_reasoning": true,
"supports_response_schema": true,
"supports_system_messages": true,
"supports_tool_choice": true,
@ -37366,6 +37368,7 @@
"supports_parallel_function_calling": true,
"supports_pdf_input": true,
"supports_prompt_caching": true,
"supports_reasoning": true,
"supports_response_schema": true,
"supports_system_messages": true,
"supports_tool_choice": true,
@ -37406,6 +37409,7 @@
"supports_parallel_function_calling": true,
"supports_pdf_input": true,
"supports_prompt_caching": true,
"supports_reasoning": true,
"supports_response_schema": true,
"supports_system_messages": true,
"supports_tool_choice": true,

2
tests/test_litellm/llms/openai/responses/test_openai_responses_transformation.py
View file

@ -2034,9 +2034,11 @@ class TestReasoningFollowsModelSupport:
("gpt-4o", False),
("gpt-4.1", False),
("gpt-4o-mini", False),
("gpt-5-search-api", False),
("gpt-5.6", True),
("o3", True),
("o3-deep-research", True),
("o4-mini-deep-research", True),
("codex-mini-latest", True),
("computer-use-preview", True),
],

21
tests/test_litellm/test_model_prices_schema.py
View file

@ -173,3 +173,24 @@ def test_dated_variants_carry_base_alias_service_tier_pricing(prices: dict):
"sync the tier keys so service-tier requests against pinned snapshots are not "
"billed at standard rates:\n" + "\n".join(drifted)
)
def is_openai_o_series(name: str) -> bool:
base = name.split("/")[-1]
return len(base) > 1 and base[0] == "o" and base[1].isdigit()
def test_openai_o_series_entries_carry_supports_reasoning(prices: dict):
unflagged = [
name
for name, entry in prices.items()
if isinstance(entry, dict)
and entry.get("litellm_provider") == "openai"
and is_openai_o_series(name)
and entry.get("supports_reasoning") is not True
]
assert unflagged == [], (
"OpenAI o-series models are reasoning models, and the Responses API drops the "
"`reasoning` param for any mapped OpenAI model whose entry lacks supports_reasoning; "
"flag these entries:\n" + "\n".join(unflagged)
)