GPT-5.1-Codex-Max System Card
OpenAI Blog
November 19, 2025
This system card outlines the comprehensive safety measures implemented for GPT‑5.1-CodexMax. It details both model-level mitigations, such as specialized safety training for harmful tasks and prompt injections, and product-level mitigations like agent sandboxing and configurable network access.
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Originally published on OpenAI Blog on 11/19/2025