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Maxtkn vs OpenAI Codex
Codex is OpenAI’s coding agent, part of ChatGPT. Maxtkn is a desktop workspace for agent teams that can use your Codex plan or run Codex itself.
Last checked · OpenAI Codex on openai.com
The short version
- Codex is OpenAI’s coding agent. It comes in several forms, including a command-line tool, editor integrations and a desktop app, and it is tied to ChatGPT plans.
- Maxtkn is a desktop workspace with its own team of agents, preview, review and undo. It works with many model providers, not one.
- They also work together. Maxtkn can use your Codex plan as a model source, and can start Codex in its terminal sessions, each in its own copy of your project. Codex is one of the less-tested tools there, and the app says so when you choose it.
At a glance
| Maxtkn | Codex | |
|---|---|---|
| Made for | People who describe what they want and review results. No code reading required | Developers and ChatGPT users who want a coding agent |
| Main surface | A desktop app: chat, plan, files, editor, terminal and live preview side by side | A command-line tool, editor integrations and OpenAI’s own apps |
| Models | Your own key for Claude or any OpenAI-compatible service, local servers such as Ollama, or your Claude Code or Codex plan | OpenAI models, through a ChatGPT plan or an API account |
| Agent teams | Solo, Product team or Full squad, with named roles you pick per request | One agent, with its own ways to run tasks in parallel |
| Safety | Agents stay in the project folder, paths that escape are rejected, risky commands and secrets always ask. Optional container or WSL sandbox, off by default | Its own sandbox and approval settings |
| Undo and review | Every change has an owner. Keep or reject single hunks, or rewind the whole project | Diff review and its own ways to review and revert |
| Checking the work | Runs your tests and build, opens your app in a browser, saves plain-sentence acceptance checks, and a reviewer reads the diff | Runs the commands you ask for. Checks are yours to set up |
| While you are away | Goals and scheduled tasks with time and money limits. Scheduled tasks run while Maxtkn is open | Cloud tasks that run on OpenAI’s side |
| Where it runs | Your Windows PC. macOS and Linux are not available yet | Your own computer, plus OpenAI’s cloud |
| What it costs | One payment, no subscription. Planned $79 or $199, with a $29 launch offer. Not on sale yet. Model usage is billed by your provider, or counts against your ChatGPT plan | Included with ChatGPT plans, or billed per use through an API account. See OpenAI’s pricing |
Where Codex is stronger
- It is OpenAI’s own agent. It is made by the company that makes the models, so new OpenAI abilities tend to show up there early.
- Cloud tasks. Codex can run work on OpenAI’s machines, so tasks continue with your computer off. Maxtkn runs only on your computer and has no cloud agents.
- A mature sandbox. Codex has an operating-system-level sandbox kept separate from its approval settings. Maxtkn guards the project folder and checks commands first, with an optional container or WSL sandbox, but by default it is a guard rather than a virtual machine.
- More ways in. Codex is available in several places a developer already works. Maxtkn is a single desktop app, built and tested on Windows only, and still a beta.
Where Maxtkn is different
- Not tied to one provider. Use Claude, an OpenAI-compatible service, OpenRouter, Gemini, Mistral, Groq, Azure, a local model, or your Codex or Claude Code plan, and switch per request.
- A team you choose. Specialists plan, build, test and review in parallel, and bigger work starts with a design you approve first.
- Plain-language supervision. A walkthrough written from the check results, an explain-this button for any change or command, and a live preview, so you do not have to read a diff to judge the work.
- Cost before you send. The message box shows the likely cost and time, and day and month budgets stop a run at the limit.
- One payment. The app has no subscription.
Which should you pick?
- Pick Codex if you live in the OpenAI and ChatGPT world, want cloud tasks, or need a mature sandbox on macOS or Linux.
- Pick Maxtkn if you want a visual workspace with agent teams and checks, you are on Windows, or you want to keep your choice of model.
- Use both. Connect your Codex plan in Maxtkn, or run Codex in several terminal sessions at once.
Can I use my ChatGPT plan in Maxtkn?
Yes, for Codex. Maxtkn starts the tool you already use and never reads its login, and usage counts against your plan. See Connect a model.
Is Maxtkn tied to OpenAI?
No. It works with Claude, any OpenAI-compatible service, local models and more. OpenAI is one option among them.
Which is safer?
They take different approaches, and neither is a substitute for your own judgement. Maxtkn limits agents to the project folder, rejects paths that escape it and asks before risky commands. Codex uses an operating-system sandbox. Read both vendors’ safety pages, and use Ask first for work you are unsure about. See Access and safety.
Try Maxtkn next to OpenAI Codex
Maxtkn is a beta for Windows 10 and 11. Download it, point it at a folder, and give it a small task you already know the answer to.
OpenAI Codex is made by OpenAI, and we are not affiliated with them. Product names belong to their owners. Found something out of date? The changelog shows what has changed in Maxtkn.