Type: Ready-to-use agent.
OpenAI coding agent that works locally with project files and development commands.
Capabilities: Codebase exploration, code changes, command execution and reviewable development work.
The CLI repository is Apache-2.0 licensed; hosted model access has separate terms. Limited Free desktop access does not establish free CLI access. Plus is listed at $20/month and Pro from $100/month; API-key usage is billed at model API rates. GPT-6.1 Sol and GPT-6 Luna are documented Codex plan models.
Official sources checked on 23 October 2026: https://github.com/openai/codex https://learn.chatgpt.com/docs/codex/cli https://learn.chatgpt.com/docs/pricing
Getting started
macOS/Linux official installer: curl -fsSL https://chatgpt.com/codex/install.sh | sh Windows PowerShell: irm https://chatgpt.com/codex/install.ps1 | iex Run codex inside a project and sign in with ChatGPT, or configure API-key authentication.