Agent tools / Coding

OpenAI Codex

OpenAI's coding agent for the CLI, IDE, and cloud tasks that open pull requests.

Supervision needed

Medium Cloud tasks run in a sandbox and return a pull request, which gives you a natural review point.

Where it tends to fail

Tasks that need context outside the repo, and PRs that look complete but skip tests.

Pricing

Included in ChatGPT plans, including Plus at $20/month; see pricing page for limits. Pricing page (Checked Oct 2026)

Website

https://openai.com/codex

The supervision level and failure notes are our editorial judgment from how these tools are built and used, not test results or ratings. Your setup may differ.

Other coding tools

• Cursor

  Coding Medium supervision

  AI code editor with an agent that edits, runs, and tests code in your repo.

• Claude Code

  Coding Medium supervision

  Terminal-based coding agent from Anthropic that works across your codebase.

• Devin

  Coding High supervision

  Autonomous software engineering agent that takes tickets and opens PRs.