Codex
OpenAI
OpenAI's Codex is an AI coding agent that helps developers build and ship software by handling tasks end-to-end, including code generation, refactoring, and review. It integrates with IDEs, CLI, and web, powered by ChatGPT for individual and team workflows.
Free
GPT-5.5 (xhigh), GPT-5.4 (xhigh), GPT-5.4 mini (xhigh), GPT-5.3 Codex (xhigh) +1
Go
GPT-5.5 (xhigh), GPT-5.4 (xhigh), GPT-5.4 mini (xhigh), GPT-5.3 Codex (xhigh) +1
Plus
GPT-5.5 (xhigh), GPT-5.4 (xhigh), GPT-5.4 mini (xhigh), GPT-5.3 Codex (xhigh) +1
Pro
GPT-5.5 (xhigh), GPT-5.4 (xhigh), GPT-5.4 mini (xhigh), GPT-5.3 Codex (xhigh) +1

