Model

gpt-5.1-codex

1 entry · 19 November 2025

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  • Models & capabilities 1

  1. OpenAI releases GPT-5.1-Codex-Max for long-running coding tasks

    A 'compaction' technique lets the model summarise and clear its own context automatically, and OpenAI reported sessions running over 24 hours in internal testing.

    Models & capabilities