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OpenAI Codex

OpenAI US

Codex is OpenAI's coding agent, shipping as a CLI, an IDE extension, a cloud agent, a web app, a desktop app, a Slack integration and an SDK, with usage shared against your ChatGPT plan. It is the only tool in this category whose vendor documents EU data residency for the serving model.

From
€18.40
Free plan
Yes
Trial
No
Visit the vendor site Opens the vendor site in a new tab Editorial score 8.9 /10

No screenshot published yet.

Best for

EU teams that need documented data residency on the model writing their code

Strengths / Weaknesses

Strengths

  • Documented EU data residency on GPT-6.1 Sol
  • CLI, IDE extension, cloud, web, desktop, mobile, Slack and SDK on one plan
  • Approval policies and sandbox modes configurable per project in config.toml
  • Sign in with ChatGPT or with an API key, so CI and personal use stay separable

Weaknesses

  • Usage is shared with ChatGPT, so heavy chat use consumes the coding budget
  • The Pro tier splits into USD 100, 200 and 500 levels, which complicates budgeting
  • Model naming across Sol, Terra, Astra and Luna is hard to reason about

Pricing

Plan Price Unit Note
Free Price on request per user basic Codex access for quick tasks
Go Price on request per user USD 8 per month, lightweight coding tasks
Plus Price on request per user USD 20 per month, a few focused coding sessions weekly
Pro Price on request per user from USD 100 per month, also offered at USD 200 and USD 500
Business Price on request per user USD 20 per user per month, 2 or more users, annual billing
Enterprise and Edu Price on request per user price on request

Scroll the table sideways to see every column.

Verdict

The right answer for a European company that has to put data residency in writing, and a strong agent regardless. One subscription covers eight surfaces, the sandbox and approval configuration is the most explicit in this category, and the GPT-6.1 Sol family is a sensible default. The shared quota with ChatGPT is the structural annoyance.

Other Developer tools software

Claude Code Sustained agentic work on a real codebase across terminal, IDE, desktop and CI €15.64 9.3 Cline Developers and teams who want an agent with no subscription and full control over the model and the bill Free plan 8.4 Zed Developers who want a fast native editor and will supply their own model or agent €9.20 8.2 GitHub Copilot Teams who want AI in the editor they already use, at the lowest credible price €9.20 8 Cursor Developers who want the agent inside a fast editor and work mainly in Grok models €7.36 7.6 Devin Desktop, formerly Windsurf Teams that want an agent manager with an IDE around it, rather than an editor with AI added €18.40 7.2

Where we write about it

Where these numbers come from

  1. [1] ChatGPT and Codex pricing, USD converted at 1 USD = 0.92 EUR accessed 2026-11-11
  2. [2] Codex CLI documentation, install and sign-in options accessed 2026-11-11
  3. [3] Codex manual, models and EU data residency on GPT-6.1 Sol accessed 2026-11-11

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