OpenAI Codex Bug Forces User to Remind It: 'You Are Not Claude'

HamelHusain · x · 2026-08-06

A developer using OpenAI's Codex CLI (gpt-5.6-luna model) encountered a hilarious bug: the model seemingly forgot its identity, forcing the user to manually remind it that 'it was not Claude'.

The issue was submitted as a bug on GitHub and officially labeled with model-behavior. This cross-model identity confusion highlights a funny, notable moment in the use of AI coding assistants.

Related event: OpenAI's Codex Suffers Identity Hallucination, Mistakes Itself for Claude(2 posts)→

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