Tag
OpenAI releases GPT-5.1-Codex-Max, a frontier agentic coding model trained on software engineering tasks with native multi-context window support through compaction, designed to handle millions of tokens in a single task. The system card details comprehensive safety measures and preparedness framework evaluations across cybersecurity, biology, and AI self-improvement domains.
OpenAI introduces GPT-5.1-Codex-Max, a new agentic coding model with improved reasoning, token efficiency, and the ability to maintain coherent work across millions of tokens through a 'compaction' mechanism. The model is faster, more intelligent, and can sustain long-running tasks for hours or days, representing a significant advancement in AI-assisted software engineering.