model_reasoning_summary=none no longer works (400 Bad Request) #2510
Description
What version of Codex is running?
codex-cli 0.23.0
Which model were you using?
Any thinking model
What platform is your computer?
Linux 5.14.x86_64
What steps can reproduce the bug?
$ codex -c model=o4-mini -c model_reasoning_summary=none --dangerously-bypass-approvals-and-sandbox exec 'Reply with just "hi"'
[2025-08-20T10:12:13] OpenAI Codex v0.23.0 (research preview)
--------
workdir: /home/user_1/git_dir
model: o4-mini
provider: openai
approval: never
sandbox: read-only
reasoning effort: medium
reasoning summaries: none
--------
[2025-08-20T10:12:13] User instructions:
Reply with just "hi"
[2025-08-20T10:12:14] stream error: unexpected status 400 Bad Request: {
"error": {
"message": "Invalid value: 'none'. Supported values are: 'concise', 'detailed', and 'auto'.",
"type": "invalid_request_error",
"param": "reasoning.summary",
"code": "invalid_value"
}
}; retrying 1/5 in 214ms…
What is the expected behavior?
Support None value, like it used to in the past and how it is documented:
codex/codex-rs/protocol/src/config_types.rs
Lines 32 to 33 in ee8c4ad
Lines 240 to 244 in ee8c4ad
codex/codex-rs/core/src/config.rs
Lines 149 to 151 in ee8c4ad
What do you see instead?
The error above
Additional information
No response