Best AI Workspaces for Running Claude Code and Codex Together (2026)

There is no single best one; the right pick depends on whether you use one vendor or both. As of September 2026, the tools that run Claude Code and Codex side by side include plain terminal panes with git worktrees, Claude Squad, Conductor, Zed and meshcode. OpenAI's Codex app and Anthropic's Claude desktop app are polished but run only their own vendor's agent. This comparison covers what each one runs, what it costs and who it suits, using each project's own site, README or documentation.

What counts as an AI workspace?

An AI workspace is an environment where the parallel agent session, not the file, is the main object: several sessions run at once, each with its own context, and the tool helps you supervise, review and merge their work. We explain the category in what an AI workspace is. For this comparison, six questions matter:

1. Does it run both vendors' agents, or only one?
2. How does it isolate agents so they don't overwrite each other?
3. How do you review what each agent changed?
4. How do you pay: free, subscription, or usage?
5. Which platforms does it support?
6. Does it run locally or in someone else's cloud?

The comparison

Terminal panes plus git worktrees

The baseline. Open two terminal panes, give each agent its own git worktree, and merge the branches when they finish. It is free, it works with every CLI, and there is nothing to install. The cost is bookkeeping: you create the worktrees, install dependencies in each, and clean up afterwards. Claude Code can create its own worktree with claude -w <name>. If you like the terminal, start here; the steps are in how to run Claude Code and Codex in parallel on one repo.

Claude Squad

A terminal app that manages several agents on top of tmux and git worktrees, so each task gets its own isolated workspace. Its README shows named profiles for claude, codex and aider and a picker when you start a session, and you review changes and push from inside the app. It needs tmux and the GitHub CLI and is licensed AGPL-3.0. Good if you want orchestration without leaving the terminal.

Conductor

A Mac app for running Claude Code, Codex and Cursor agents in isolated workspaces and reviewing their changes side by side. Its free plan runs multiple agents in parallel on local workspaces with your own subscriptions or keys. Pro is $50 a month and adds cloud workspaces that keep running after you close the app; per Conductor's pricing page, local sessions end when your machine shuts off or you close the app. Good if you are on a Mac and want a GUI.

Zed

If you live in an editor, Zed hosts external agents over the Agent Client Protocol, and its docs list Claude and Codex among them. Each agent keeps its own login, billing and settings, and Zed does not charge for external agents. Threads from different agents sit in the agent panel and a threads sidebar next to your code.

OpenAI's desktop app and Claude desktop

Both first-party apps are strong at their own vendor's agent. OpenAI's desktop app, launched as the Codex app and now presented in OpenAI's docs as the ChatGPT desktop app, runs multiple Codex agents in parallel with built-in worktree support and reached Windows on March 4, 2026. Anthropic's Claude desktop app runs several Claude Code sessions in a sidebar, with a worktree option per session and shared plan usage. Each is included with the matching plan. The limit is the point of this comparison: neither runs the other vendor's agent, so using both means running both apps.

Vibe Kanban

A kanban-style orchestrator that hands issues to workspaces, each with a branch, a terminal and a dev server, and supports more than ten agents including Claude Code and Codex. Its GitHub README now carries a notice that the project is sunsetting, so check the announcement before you build a workflow on it.

meshcode

meshcode is a native app for Mac and Windows that puts Claude Code, Codex and other CLI agents in panes of one window, each on its own project folder. It also offers its own metered models for the cheap work. We build it, so weigh this section accordingly. The trade-offs are real ones: it is a desktop app, not an editor; for your own Claude Code and Codex panes you choose each pane's project folder, so separate worktrees are yours to set up (an opt-in setting isolates its delegated write tasks in worktrees automatically); and the prepaid billing for its own models is separate from the subscriptions you already pay.

Which should you pick?

• You only use one vendor: use that vendor's own app. It is the least friction.
• You use both and live in the terminal: Claude Squad, or plain worktrees.
• You use both and want a GUI on a Mac: Conductor.
• You use both on Windows, or want cheaper models for routine work: meshcode.
• You already work inside an editor: Zed with external agents.
• Vibe Kanban: read its sunset notice first.

The meshcode angle

The difference we build for is what happens to your allowance. Running Claude Code and Codex together spreads work across two separate vendor limits, and meshcode adds a third route: busywork like reading files, sweeping searches and mechanical edits goes to cheaper metered workers, so your Claude and Codex plans last longer. It cannot raise those plans' limits; it changes how fast you reach them. Your CLIs, skills, hooks, MCP servers and CLAUDE.md carry over untouched, and Claude and Codex keep billing you directly.

See the pricing yourself: meshcode is free to start — download it

FAQ

What is the best AI workspace for running Claude Code and Codex at the same time?

It depends on your platform and how much structure you want. In the terminal, Claude Squad or plain git worktrees. On a Mac, Conductor. On Mac or Windows, meshcode. In an editor, Zed. All five run both vendors' agents in one place; the first-party apps do not.

Can Codex and Claude Code run in the same app?

Yes, in the third-party tools above. The vendors' own apps each run only their own agent.

Do I need git worktrees?

For real parallel work on one repository, yes, or an equivalent. Two agents in one working tree overwrite each other. Most tools here create worktrees for you; the DIY route makes you do it.

Are there free options?

Yes: terminal panes with worktrees, Claude Squad, Conductor's free plan and Zed all cost nothing. You still pay Anthropic and OpenAI for the agents themselves. See also whether you can use Claude Code and Codex at the same time.

Sources, read September 21, 2026: conductor.build and its pricing page; the claude-squad README on GitHub; the vibe-kanban README on GitHub; zed.dev/docs/ai/external-agents; OpenAI's "Introducing the Codex app"; Anthropic's Claude Code desktop documentation. Tools in this space change fast, so check each project before you commit.

👉 Download meshcode — Mac, Windows