Codex CLI

Pricing

• Plus - $20/mo: Codex in the CLI, IDE extension, web, and iOS, plus cloud code review and Slack
• Pro - $100, $200, or $500/mo: everything in Plus with no five-hour limit; Ultrafast mode on Pro $500
• Business - $20/user/mo billed annually ($25 monthly), 2+ users
• Enterprise and Edu - contact sales
• API key - pay per token at OpenAI API rates; no cloud features
• Free and Go ($8/mo) - GPT-6 Luna in the desktop app only, subject to rollout

Install

curl -fsSL https://chatgpt.com/codex/install.sh | sh

npm install -g @openai/codex

brew install --cask codex

Models

GPT-6.1 Sol is the default as of CLI 0.161.0, with GPT-6 Astra, GPT-6 Sol, and GPT-6 Luna also available on ChatGPT plans. API-key sessions get whichever models the key can access, and custom Responses-compatible providers can be configured.

Recent changes

• Oct 14Scheduled: GPT-5.5 retires from Codex on all ChatGPT plans. The OpenAI API is not affected.
• Oct 8CLI 0.162.0 adds tools for creating and listing managed Git worktrees, /copy for transcript blocks, and honors server Retry-After advice.
• Oct 8GPT-6.1 Sol Ultrafast mode arrives on Pro $500 and eligible Enterprise and Edu plans.
• Oct 7CLI 0.161.0 makes GPT-6.1 Sol the default model and adds /mcp login to sign in to MCP servers mid-session.
• Oct 1CLI 0.160.0 lets sessions start outside a project with workspace defaults and restores saved permissions on resume.

Sources: openai/codex README, Codex pricing, Codex changelog

Read next

• Codex Usage Limits and Pricing in 2026: Pro 100, Pro 200, Pro 500, Resets, and 'Model at Capacity' ErrorsCodex is included in ChatGPT plans from Free to Enterprise. On September 29, 2026, OpenAI reopened Pro $200 with roughly half the old usage value, added Pro $500 with Astra Ultrafast, and left Plus at $20/month. Existing Pro $200 subscribers keep their old allowance through October 29, 2026. Here is how resets work, what each plan buys, and what to do about 'Selected model is at capacity'.
• Codex CLI Worktrees Turn Agent Runs Into Durable SessionsCodex CLI 0.154.0 adds experimental worktrees, inline answers, Windows daemon support, and approval hardening. The important shift is durable agent workspace control.
• Codex Exec in CI: Practical Guide to Headless OpenAI Agentscodex exec is OpenAI's non-interactive mode to run Codex agents from scripts, CI and GitHub Actions. How to set it up safely with real flags and working YAML.

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