Coding agentsPaid

Codex

OpenAI's coding agent: works in your terminal, editor or in the cloud and opens pull requests.

★★★★★★★★★★4.5our rating18+ (developer tool)

Our take

OpenAI's coding agent, good locally and in the cloud for well-scoped tasks.

Easy to start4/5
Quality of results5/5
Free plan value4/5
Safety and privacy4/5

Our own rating for learners: we score ease for beginners, quality of results, value of the free plan, and safety for families, then average them.

What it includes

  • Terminal and editor use
  • Cloud tasks that open pull requests
  • Project rules in AGENTS.md
  • Sandbox and approval modes

Quick start

Your first ten minutes with Codex.

  1. Install it from the official docs and sign in with your ChatGPT account.
  2. Start it in your project folder.
  3. Ask it to propose a plan and wait before edits.
  4. Let it make one change and run the tests.
  5. Read the diff, then commit or ask for fixes.

Good for

  • Handing off a scoped task to the cloud
  • Pull requests you review
  • Code review on GitHub

Tip

Keep AGENTS.md short: setup, test command and the rules you care about.

Watch out

Pick the sandbox mode on purpose, and keep secrets out of prompts and cloud tasks.

Learn it with us

Startups & business

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From idea to a live product and a pitch, up to Claude Code.

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Build and ship real software with coding agents, side by side.

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