OpenAI Codex CLI garbles Chinese text

// 59d agoNEWS

OpenAI Codex CLI garbles Chinese text

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A Reddit user says OpenAI Codex CLI started inserting Chinese text into otherwise normal terminal output, despite no Chinese in the prompt. Recent GitHub issues suggest a Windows/PowerShell encoding regression is more likely than the model intentionally switching languages.

// ANALYSIS

Most likely encoding, not a language-switching model bug. The Codex repo already has Windows/PowerShell issues describing Chinese text being garbled, which is exactly the sort of mojibake you get when UTF-8 settings are bypassed.

–[Issue #4574](https://github.com/openai/codex/issues/4574) reports Chinese characters turning into mojibake in recent Codex versions.
–[Issue #4498](https://github.com/openai/codex/issues/4498) points to the Windows PowerShell stdio path, where `-NoProfile` can bypass user encoding settings.
–If this reproduces on Windows, check the terminal code page and shell profile before blaming the model.
–If it also shows up off Windows, the bug is probably in Codex’s output pipeline rather than just PowerShell.

// TAGS

ai-codingclidevtoolopen-sourceopenai-codex-cli

DISCOVERED

59d ago

2026-03-29

PUBLISHED

59d ago

2026-03-29

RELEVANCE

8/ 10

AUTHOR

secondorder_

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