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OpenAI Codex

OpenAI's coding agent that writes, reviews and runs code in the cloud, the CLI and IDEs, included with ChatGPT plans.

Number 5 in best coding agents.

Visit OpenAI Codex

33
Our test
Test in progress
Adoption
3/25
Use case quality
8/15
Beginner ease
6/10

Until our hands-on test is done, Tool Rank uses the directory data alone, scaled to 100.

Best for
ChatGPT subscribers wanting a bundled coding agent
Free plan
Yes
Paid from
$8/mo Go
Use cases tracked
1

Pricing from the official pricing page, checked October 15, 2026. Prices change; confirm before you buy.

Pricing notes

Free and Go get only limited trial access to Codex. Plus ($20/mo, per the OpenAI help center) is the first plan built for regular coding sessions. Pro is listed as 'From' $100. chatgpt.com/pricing shows no numbers, so the $8 Go price comes from OpenAI's January 2026 announcement.

What people use OpenAI Codex for

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