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2026.06.11@chase_ai_

Stop Picking Sides: How to Use Claude Code and Codex Together

AI
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The "Claude Code vs Codex" debate misses the point entirely. Chase argues that the real question is not which tool is better, but why you should use both tools together in the same workflow. He walks through two concrete setups that let you switch between them without leaving your current session.

The Codex Desktop App Approach

If you work primarily inside the Codex desktop app, the integration is already built in. Hit Control-J to open the integrated terminal, then launch Claude Code in the same project directory. You now have both tools running side by side in one window. Codex handles the GUI-driven workflows while Claude Code runs in the terminal below it. No extra configuration required.

The Claude Code Forward Approach

If you prefer staying inside the terminal with Claude Code as your primary tool, you can pull Codex into your session through a plugin. Install the Codex plugin for Claude Code, which takes about 30 seconds. Once installed, you get access to a set of slash commands directly inside your Claude Code session:

  • /codex:review runs a standard read-only Codex code review against your local git state
  • /codex:adversarial-review runs a steerable challenge review that tries to poke holes in your work
  • /codex:rescue delegates investigation or an explicit task to Codex as a background job
  • /codex:cancel stops an active background Codex job

This means you can be deep in a coding session with Claude Code, then hand off a code review to Codex and get a report back without switching tools or breaking your flow.

Why This Matters for Real Workflows

The practical value here is that each tool has different strengths, and combining them gives you coverage that neither provides alone. Claude Code excels at interactive terminal-based development. Codex brings structured code reviews and background task delegation. Running them together means you can build with one and verify with the other, all inside the same session.

Key Takeaways

  • The "vs" framing is wrong. Claude Code and Codex are complementary tools, not competitors.
  • Two integration paths exist. Use the Codex desktop terminal to run Claude Code, or install the Codex plugin inside Claude Code.
  • The Codex plugin installs in 30 seconds and adds slash commands for review, adversarial review, rescue, and cancel.
  • Adversarial code review is the standout feature. Having a second AI challenge your work while you build catches problems earlier.
  • Stay in your preferred environment. Both approaches let you access the other tool without context switching.

Resources

Published June 11, 2026. Writeup generated from a favorited TikTok.