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fix(chatgpt): normalize Responses string input

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Chase Cai 2026-08-25 16:54:18 +08:00 • committed by willcai1984
parent 4d7144160a
commit 50daae5b81
1 changed files with 24 additions and 0 deletions
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24
litellm/llms/chatgpt/responses/transformation.py
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@ -38,6 +38,27 @@ class ChatGPTResponsesAPIConfig(OpenAIResponsesAPIConfig):
def custom_llm_provider(self) -> LlmProviders:
return LlmProviders.CHATGPT
@staticmethod
def _normalized_responses_input(
request_input: str | list[Any], # mutable-ok: outbound Responses payload is a JSON list by spec
) -> list[Any]: # mutable-ok: same — the ChatGPT backend requires the message-list form
"""Return the ChatGPT-compatible form of a Responses API ``input`` value.
The public Responses API accepts the string shorthand; the ChatGPT OAuth
backend requires the message-list form. Non-string values are returned
unchanged.
"""
if isinstance(request_input, str):
return [ # mutable-ok: ChatGPT backend requires a JSON message list
{ # mutable-ok: message payload is inherently a JSON object
"role": "user",
"content": [ # mutable-ok: ditto
{"type": "input_text", "text": request_input}, # mutable-ok: ditto
],
}
]
return request_input
def validate_environment(
self,
headers: dict,
@ -73,6 +94,9 @@ class ChatGPTResponsesAPIConfig(OpenAIResponsesAPIConfig):
litellm_params,
headers,
)
request["input"] = self._normalized_responses_input(
request_input=request.get("input", []),
)
base_instructions: Final = get_chatgpt_default_instructions()
existing_instructions: Final = request.get("instructions")
if existing_instructions: