OpenAI Codex

Pricing

• Free - $0 and Go - $8/mo: GPT-6 Luna at Standard speed in the desktop app, subject to rollout
• Plus - $20/mo: Codex on the web, in the CLI, IDE extension, and iOS, plus cloud code review and Slack; GPT-6.1 Sol and GPT-6 Luna
• Pro - $100, $200, or $500/mo: everything in Plus, currently 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 such as GitHub code review or Slack

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 recommended model for complex coding and the CLI default, with GPT-6 Astra, GPT-6 Sol, and GPT-6 Luna also available and GPT-5.6 Sol, Terra, and Luna kept during the rollout. Switch with /model in a session, codex --model (or -m) at launch, or a model entry in config.toml; API-key sessions get whatever models the key can access.

Recent changes

• Oct 15Codex CLI 0.163.0 adds a searchable /config, mid-response steering, a configurable leader key, parallel read-only tool calls, and enables Daybreak by default for eligible accounts.
• Oct 14GPT-5.5 retires from Codex for ChatGPT sign-ins; OpenAI recommends GPT-6.1 Sol. The API and API-key sessions are not affected.
• Oct 9Composer predictions (beta) suggest your next prompt in the Codex desktop app for personal Pro users with GPT-6 Astra and GPT-6.1 Sol.

Sources: Codex pricing, Codex changelog, Models, Codex CLI docs, openai/codex README

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