What is LetThemBuild?
LetThemBuild is a workspace where several AI models work on your code together. One model leads and makes the change in its own git worktree; the others review it, run their own commands such as your build and tests, and agree or disagree. You get a receipt of each command they ran and its exit code. It is made by GPULogy AI LLC.
How do I verify code written by an AI?
Do not take the AI's word that it works: run the build and the tests yourself, or have a second model run them. In LetThemBuild the reviewers re-run your commands and record each one with its exit code, and the run ends with a verdict such as Verified, Partly verified, Checks failed or Unverified, so you can see what was actually checked rather than what was claimed.
Can Claude, ChatGPT, Gemini and Grok review each other's code?
Yes. In LetThemBuild each model takes a seat in the same discussion: one leads and the others review its change, each with read-only tools and its own commands. You choose the models, including models from other providers you bring yourself.
Why use more than one AI model for coding?
Different models miss different things. A second model that re-runs the build and tests catches a change that only looks finished, and disagreement between models points you at the part worth reading yourself.
Can it review my GitHub pull requests?
Yes. The LetThemBuild GitHub App reviews each pull request and posts a summary comment, inline comments on the diff and a check in the merge box. It does not approve pull requests or push to your repository.
Can I use my own API keys or AI subscriptions?
Yes. Seats can use your own provider API keys, and on Pro and Team a seat can run on a command-line subscription you already have, such as Claude Code, Codex or Gemini CLI, at no extra token cost. Otherwise the AI included with your plan is used, and past that each call costs what the provider charges plus 10%.
How much does LetThemBuild cost?
There is a free plan with $2 of credit to start and no card. Pro is $20 a month or $200 a year, and Team is $40 per member a month with shared workspaces and centralized billing.
Where does LetThemBuild run?
On Mac, Windows and Linux as a desktop app with the ltb command line, on the web and iPhone as LetThemChat, in VS Code and Cursor as an extension, and on GitHub as a pull request reviewer.
More in the documentation and on the pricing page.