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Codex

OpenAI's coding agent for exploring code, building features, reviewing changes and fixing failures, locally or in the cloud.

by OpenAI · last checked Oct 14, 2026

Illustration · Agents · not a product photo

What has been shown

Generally available across ChatGPT apps, the Codex CLI, an IDE extension and Codex Cloud.

Evidence support Company-reported

Public availability OpenAI includes Codex in ChatGPT plans anyone can buy, with limited access on Free and Go and expanded usage from Plus at $20 a month. OpenAI

As of Oct 13, 2026 · OpenAI (company source)

Can you get it?

Available now

Limited on Free and Go; expanded on Plus; longer sessions on Pro. Business seats include Codex.

As of Oct 14, 2026 · OpenAI (company source)

Is it still alive?

Active
  • Human involvement: User-directed OpenAI
As of Oct 13, 2026 · OpenAI (company source)

In ChatGPT plans (limited on Free and Go, expanded from Plus) and ChatGPT Business seats; it can also run with your own OpenAI API key. Runs in the ChatGPT apps, the Codex CLI, the IDE extension and Codex Cloud.

What the evidence says

  1. Documented by company source

    OpenAI lists Codex on the ChatGPT desktop app, mobile app and web, the Codex CLI, the Codex IDE extension, and Codex Cloud.

    Observed Oct 13, 2026 · OpenAI (company source)
  2. Documented by company source

    OpenAI describes Codex tasks as exploring code, building features or tools, reviewing code, and fixing issues and failures.

    Observed Oct 13, 2026 · OpenAI (company source)
  3. Documented by company source

    OpenAI's rate card says a standard ChatGPT Business seat includes ChatGPT and Codex, and lists the credit rates Codex usage draws on for Business, Enterprise and Edu customers.

    Observed Oct 14, 2026 · OpenAI (company source)

Price

  • Plus$20/monthExpanded Codex usage. Checked Oct 14, 2026. OpenAI (company source)
  • Pro$100/monthFrom $100/month, in three usage tiers; longer Codex sessions. Checked Oct 14, 2026. OpenAI (company source)
  • Business$20/monthPer user, 2+ users, billed annually ($25 billed monthly). Business and Enterprise can buy credits for more usage. Checked Oct 14, 2026. OpenAI (company source)

What we don't know yet

  • Everything above is company-reported: no customer, regulator or independent confirmation is in the Index yet.
  • Where it can be bought or used is not stated in the cited sources.

See also

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