OpenAI coding tool for working with codebases, reviewing changes and delegating software development tasks.
Codex is included in ChatGPT plans, with limited Free desktop access subject to rollout. Plus is listed at $20/month and Pro from $100/month. API-key use in CLI/SDK/IDE is billed separately at API rates and does not include cloud-based features. Plugins are supported in desktop and CLI, not the IDE extension.
Official sources consulted on 23 October 2026: https://learn.chatgpt.com/docs/codex/ide https://learn.chatgpt.com/docs/codex/cli https://learn.chatgpt.com/docs/pricing https://learn.chatgpt.com/docs/plugins
Features, integrations and limits may vary by plan, region, platform and administrator settings.