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fix: allow Responses API auto-upgrade for custom providers serving GPT-5.x #23895

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fix: allow Responses API auto-upgrade for custom providers serving GPT-5.x #23895

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2 changes: 1 addition & 1 deletion run_agent.py
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Expand Up @@ -1265,7 +1265,7 @@ def __init__(
# does NOT support the Responses API — skip the upgrade for Azure

@teknium1 teknium1 Jul 13, 2026

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Current main intentionally keeps generic provider="custom" GPT-5 relays on Chat Completions (run_agent.py:1397-1401, commit 0e4c879) because many OpenAI-compatible relays do not implement full Responses semantics. This broad condition would undo that regression fix and also override an explicit api_mode="chat_completions" choice.

# (openai.azure.com), even though it looks OpenAI-compatible.
if (
api_mode is None
(api_mode is None or api_mode == "chat_completions")
and self.api_mode == "chat_completions"
and self.provider != "copilot-acp"
and not str(self.base_url or "").lower().startswith("acp://copilot")
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