Receiveed error: Unknown parameter: 'input[52].phase'., chat won't continue on this session
Resolved 💬 2 comments Opened Feb 6, 2026 by sirmalloc Closed Feb 6, 2026
💡 Likely answer: A maintainer (github-actions[bot], contributor)
responded on this thread — see the highlighted reply below.
What version of Codex CLI is running?
0.98.0
What subscription do you have?
Pro
Which model were you using?
gpt-5.3-codex
What platform is your computer?
Darwin 25.2.0 arm64 arm
What terminal emulator and version are you using (if applicable)?
Ghostty
What issue are you seeing?
Chat started returning this after my prompt:
■ {
"error": {
"message": "Unknown parameter: 'input[52].phase'.",
"type": "invalid_request_error",
"param": "input[52].phase",
"code": "unknown_parameter"
}
}
All future messages result in the same message being displayed. Starting a new session works fine.
What steps can reproduce the bug?
Uploaded thread ID 019c2f09-beaa-7f70-a90c-9ae80058e84f
What is the expected behavior?
_No response_
Additional information
_No response_
2 Comments
Potential duplicates detected. Please review them and close your issue if it is a duplicate.
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Thanks for reporting. We're tracking this issue in #10832.