GPT-5.1-Codex-Max is now available via the Responses API and OpenAI Platform. "GPT‑5.1-Codex-Max is purpose-built for agentic coding. foundational reasoning model."
GPT-5.1-Codex-Max for Agentic Coding Released
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GPT-5.1-Codex-Max is now available via the Responses API and OpenAI Platform. "GPT‑5.1-Codex-Max is purpose-built for agentic coding. foundational reasoning model."