Claude Code · Codex

Claude Code vs Codex CLI: which one I use for what

The short answer: I use both. Claude Code is my lead. It plans, reviews, and runs multi-step work across a codebase. Codex CLI is the executor I hand clearly scoped tasks to. Asking "which one is better" is like asking whether you need a project lead or a developer. On a real project you want both.

Both tools shipped updates in the same week of October 2026, which is why this question is everywhere again. Here's how they differ and how I split the work.

What changed this month?

  • Claude Code 2.1.296 (9 October) added a setting that pins every subagent in a workflow to one model, plus per-subagent context settings. The focus is making large multi-agent workflows predictable and cheaper.
  • Codex CLI 0.162 added managed Git worktrees for local projects, so each task runs in its own copy of the repo, plus task pinning.

Both summaries come from Tech Insider's comparison. The same piece cites Stack Overflow's survey: among developers who use a coding agent, 65.5% used Claude Code and 29.5% used Codex.

Where is Claude Code stronger?

In my work, Claude Code wins when the job is bigger than one file:

  • Reading a codebase and planning. It holds the whole shape of a project and writes a plan before it touches anything.
  • Running a team of subagents. I rebuilt most of this site's inner pages with four parallel subagents, each owning its own files. I wrote up how that works.
  • Checking work. Running the build, reading the errors, loading pages in a browser and fixing what's broken.

Where is Codex CLI stronger?

Codex is at its best with a tight, well-described task: "implement this function, these tests must pass." Its new worktree support fits that perfectly. Each task gets an isolated copy, so a bad attempt never touches your main branch.

The loop I actually use

I put the two in a loop:

  1. Claude writes the plan and the acceptance checks.
  2. Codex executes the plan.
  3. Claude reviews the result against the checks.
  4. If it fails, Codex improves it. The loop stops after three rounds, so it can't spin forever.

The plan-and-check model stays separate from the model writing the code. One model reviewing its own work tends to approve it; two models catch each other's blind spots.

The full setup is one skill file. The step-by-step guide (in Roman Urdu) is here: Claude x Codex Loop.

Which should you start with?

  • If you're new to coding agents, start with Claude Code. Planning and review are what beginners skip, and they cause most of the bad results.
  • If you already have clear tasks and tests, add Codex CLI as the executor.
  • If you run a team, the October updates make both cheaper to run at scale. Pin cheaper models to the simple subagents and save the strong model for planning.

Want an AI workflow like this built for your team? Open a case file.

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