Codex

● Identity checked

Code · Vendor site 2026-10-04

Codex is OpenAI’s agentic coding partner available across ChatGPT, a cloud workspace, IDE extension, and CLI. It runs parallel agents with computer and browser tools for refactors, reviews, bug fixing, and multi-step engineering tasks tied to your ChatGPT plan.

Updated 2026-10-04View sources

Official website

Category: Code
Free access: Codex access is bundled into ChatGPT plans; the public Codex page lists plan tiers but not a standalone free Codex SKU.
API access: Developer docs linked from the Codex page cover cloud, CLI, and IDE integrations authenticated via ChatGPT accounts.

Is Codex right for you?

A good fit for

Software teams already on ChatGPT who want OpenAI agents for implementation, code review, and long-running cloud tasks.

Before you choose

Usage limits depend on the ChatGPT plan shown on the Codex page; the site displayed localized currency rather than USD list prices during review.

OpenAI’s coding agent suite

Codex extends ChatGPT into IDE, terminal, and cloud agents that plan, implement, and review software work with shared account limits.

What it can do

Features & capabilities

Unknown is different from unavailable. Each fact carries its own evidence.

Capability	Value	Evidence	Checked
Plan inclusion	Codex page states Codex is included in ChatGPT Plus, Pro, and Business plans with tiered usage limits.	Facts sourced	2026-10-04
Multi-surface	Marketing lists Codex in ChatGPT, cloud, IDE extension, and CLI connected by one account.	Facts sourced	2026-10-04
Parallel agents	Copy highlights running many agents in parallel with computer and browser verification tools.	Facts sourced	2026-10-04

Understand the total cost

Codex pricing & plans

Pricing

Not listed

Official monthly price not confirmed

API: Developer docs linked from the Codex page cover cloud, CLI, and IDE integrations authenticated via ChatGPT accounts.

Explore pricing & history

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The practical questions

Frequently asked questions

What is Codex used for?

Does Codex have a free plan?

Codex access is bundled into ChatGPT plans; the public Codex page lists plan tiers but not a standalone free Codex SKU.. This record does not confirm an ongoing free plan.

How much does Codex cost?

A listed monthly price has not been confirmed. See the plan cards for entitlements, billing commitments and seat minimums.

Can I use Codex through an API?

Developer docs linked from the Codex page cover cloud, CLI, and IDE integrations authenticated via ChatGPT accounts.. API access and subscription access may have different terms; consult the linked sources.

What should I check before choosing it?

Usage limits depend on the ChatGPT plan shown on the Codex page; the site displayed localized currency rather than USD list prices during review.

Price history

No retained pricing changes yet. A current price alone does not establish a historical trend.

How this profile is supported

Identity and profile

Reviewed vendor source

Read original source ↗

2026-10-04

Facts apply to the named version and check date. Send a sourced correction if something changed.