FrontierThe story, in brief
Building more with GPT-5.1-Codex-Max
OpenAI just released GPT-5.1-Codex-Max—a faster, reasoning-enhanced coding model built for project-scale work.
The KeyNews take
Why it matters
A new specialized coding model with enhanced reasoning and token efficiency signals OpenAI's strategy to dominate the AI-native developer tooling market. This is a direct competitive move against Claude's code capabilities and Cursor's agentic refactor features.
The key facts
5 to knowModel: GPT-5.1-Codex-Max
Positioning: agentic coding model for long-running, project-scale work
Key capabilities: enhanced reasoning, token efficiency improvements
Published: November 19, 2025
Use case: code generation and long-context development workflows
Go to the source
OpenAI Blogopenai.com
Publisher excerpt: 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.