Blog GPT-5.1-Codex-Max

What are GPT-5.1-Codex-Max and How to Use it ?
Dec 2, 2025
gpt-5.1-codex
GPT-5.1-Codex-Max

What are GPT-5.1-Codex-Max and How to Use it ?

On November 19–20, 2025 OpenAI released two related but distinct upgrades: GPT-5.1-Codex-Max, a new agentic coding model for Codex that emphasizes