LetThemBuild · for Mac, Windows and Linux
LetThemBuild puts Claude, ChatGPT, Gemini and Grok to work on your machine as a group. One leads and writes the code; the others review it — reading the files, re-running your build and your tests — and they don’t agree until they have. You get the change, and a receipt of exactly what was checked.
Free plan · no card · $2 of credit to start
The commands each reviewer ran, and their exit codes, on the receipt under every answer. “Looks good to me” doesn’t count.
Bring API keys, or let the seats run on the Claude Code, Codex, Gemini CLI and Grok subscriptions you already pay for. Or run on our keys and pay for what you use.
The group works in a git worktree on your machine. Nothing leaves unless you choose Our keys — and the app says so before you do.
You ask.
“Add rate limiting to the upload endpoint and prove it holds.”
The lead works.
In its own branch, with real tools, narrating as it goes — you watch the commands run.
The reviewers check.
Each reads the diff, re-runs the test, and writes a verdict with its evidence. A reviewer that ran nothing is marked as one that ran nothing.
They converge — or say exactly why not.
Agreement is a token on a receipt, not a vibe. An unresolved point is named, with who holds it.
You get a PR.
Or merge, or discard — one click each. The branch was yours the whole time.
✅ All reviewers agree
3 reviewers · 7 commands run by 3 of them · all 7 passed
A real receipt shape: time, tokens and whose money, per seat. The one above the composer shows the running cost before you send.
Quick for a question. Consensus for a change that matters. Deep when it has to be right. Or let it decide from what you asked and what the lead actually did — a turn that changed files gets reviewed; one that answered a question doesn’t burn three more seats.
Point a seat at Kimi, DeepSeek, Qwen, a model on your own server, or your Claude Code, Codex, Gemini CLI or Grok Build install. The seat takes that model’s name and mark. The room doesn’t care who’s in it; it cares what they ran.
LetThemBuild is the desktop app where the group builds. LetThemChat, on the web and iPhone, is the same account and the same sessions, synced — for reading what they did, asking the group a question, and steering the next step when you’re away from your desk.