Codex Windows app fails with Model not found, picker leaks model versions 5.6 and 6
axiomzero-qed · ghdev · 2026-10-15
- A user running OpenAI.Codex 26.1007.9446.0 on Windows 11 (Chinese edition) reports that the desktop app's built-in Chat mode fails with Model not found for both listed model versions 5.6 and 6 across all three thinking-intensity levels, while identical requests succeed on the web interface.
- The issue includes reproduction steps and a diagnostic log showing authentication succeeds, isolating the failure to model selection. The accompanying screenshot shows an image-generation request.
- Notably, the picker exposes versions labeled 5.6 and 6, hinting at upcoming OpenAI model versions — unverified since this comes from a regular user, not an official source.
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