Free
USD 0 / month
Limited access; available features and usage depend on the product surface and account.
Codex
Works with codebase context to inspect files, make changes and run development commands, with terminal and IDE workflows.
Documentation-based assessment · No hands-on results or numerical ratings. Suitability statements are editorial judgments to help you plan your own evaluation.
Provider: OpenAI · Last fact-check: · Next review due: 2026-10-17
Who it may suit
Developers and technical teams who can review changes and verify them in a real project.
Shortlist for a bounded issue in a repository. Compare the final diff, test results and manual repair effort with another coding agent once its profile is reviewed.
Product, model and subscription
Codex is the coding product, not one fixed GPT model. Record the chosen model, reasoning settings, client, permissions and subscription. ChatGPT plan access and separately billed API-key usage are distinct.
Exact model/version assessed: not tested. The plans below describe app access, not API model pricing.
Documented capabilities
- The CLI can inspect and edit repository files and run installed development tools.
- Code review can examine uncommitted changes, a commit or a base branch.
- Script and CI workflows can use codex exec.
OpenAI — Codex CLI · OpenAI — ChatGPT and Codex quickstart · OpenAI — plans and Codex pricing
Integrations
CLI and IDE workflows connect to project files and development tools. Plugins can add external services. API-key access does not include every cloud-based feature.
Plans & billing
Selected plans only. Unknown prices are not estimates.
Plus
USD 20 / month
Published USD monthly list price. Local checkout, tax and currency conversion not verified. Usage limits apply; API usage is separate.
Official sources
- OpenAI — Codex CLI — checked 2026-09-17
- OpenAI — ChatGPT and Codex quickstart — checked 2026-09-17
- OpenAI — plans and Codex pricing — checked 2026-09-17
Put it to work
- Give an AI agent a job before you give it the keys — Guide
- Choose an AI model with a task, not a leaderboard — Guide
Review history
- — Added a separate coding-agent profile and software-development category; documented capabilities only.
Links in this guide go directly to official sources and contain no affiliate tracking. Plans can change; check the provider before purchasing.
Published by NextWith.ai Editorial Desk · . Product fact-check dates are recorded separately above.
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