[OpenAI · openai.com](<https://openai.com/index/gpt-5-1-codex-max/>)

# Building more with GPT-5.1-Codex-Max

Introducing GPT-5.1-Codex-Max, a faster, more intelligent agentic coding model for Codex. The model is designed for long-running, project-scale work with enhanced reasoning and token efficiency.

1. [New Releases · OpenAI](<https://curation.space/openai/new-releases>)