Codex Authentication Management

Comprehensive authentication setup and management for OpenAI Codex CLI, supporting ChatGPT OAuth and API keys.

Last Updated: December 2025 (GPT-5.2 Release)

Authentication Methods

1. ChatGPT Plus/Pro (Recommended)

Benefits:

• No API key management
• Includes GPT-5.1-Codex-Max and GPT-5.2 access
• 4x more usage with Codex-Mini
• Seamless browser authentication
• Automatic token refresh
• Access to GPT-5.2 Pro for maximum accuracy