OpenAI Codex CLI Integration

Integrates OpenAI's Codex CLI into Claude Code, enabling seamless AI collaboration between Claude and Codex for enhanced development workflows.

Last Updated: December 2025 (GPT-5.2 Release)

When to Use

• Working with OpenAI models (GPT-5.2, GPT-5.1-Codex-Max, o3, o4-mini)
• Code generation and refactoring with latest models
• Git-aware workflows and PR reviews
• Full automation with permission bypass
• Reasoning-first development (o3 models, GPT-5.2 with xhigh reasoning)
• Multimodal tasks (code + images)
• Sandboxed execution environments
• Long-context tasks (400K tokens with GPT-5.2)

Quick Start