GPT-5.1-Codex-Max

Name: GPT-5.1-Codex-Max
Brand: OpenAI

OpenAI · variant of GPT-5.1-Codex · 2 posts · 0 outlets writing

listed on OpenRouter 4 December 2025 · openai/gpt-5.1-codex-max

Launch and releases

OpenAINew model· 19 Nov

OpenAI announced GPT-5.1-Codex-Max, a new coding model for Codex with improved speed, intelligence, reasoning, and token efficiency.

OpenAINew model· 19 Nov

GPT-5.1-Codex-Max · OpenAI — forck.live

OpenAI · variant of GPT-5.1-Codex · 2 posts · 0 outlets writing

listed on OpenRouter 4 December 2025 · openai/gpt-5.1-codex-max

OpenAINew model· 19 Nov

OpenAI announced GPT-5.1-Codex-Max, a new coding model for Codex with improved speed, intelligence, reasoning, and token efficiency.

OpenAINew model· 19 Nov

GPT-5.1-Codex-Max System Card

OpenAI published a system card for GPT‑5.1-CodexMax, describing safety measures including model-level mitigations and product-level mitigations.

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