LetThemBuild · for Mac, Windows and Linux
One leads. Three review the work, run checks, and show their evidence. All in your own checkout — Claude, ChatGPT, Gemini and Grok out of the box, or any of hundreds more through your own endpoint.
Free plan · No card required · $2 of credit to start
Add rate limiting
Add rate limiting to the upload endpoint and prove it holds.
Bring together the best AIs, or use your own endpoint.
01 / From request to reviewed change
Ask
Tell the lead what to build, with files or pasted context when it needs them.
Build
The lead AI writes the code in your workspace, with real tools and commands.
Review
The other AIs read the changes, run checks, and give their verdicts.
Resolve
They converge — or call out exactly what to fix. You get the full discussion.
Your PR
When you’re happy, merge or discard. The branch is yours.
New · Run in the Cloud
Hand a task to the cloud and go. The room keeps building while your laptop is shut, asks before anything risky, and hands the work back as a branch.
See How It WorksHand a task to the cloud from the Mac, the web, the iPhone, or ltb cloud in a terminal.
Follow each step, approve a command and stop the run from whichever device is in your hand. The Mac can stay closed.
The lead does the work, the reviewers check it before it counts as done, and the warden looks at every action.
Pull Back makes the work a branch of its own, Open PR opens a pull request, and Move Back to This Mac carries on here.
The commands each reviewer ran, and their exit codes, on the receipt under every answer. You see exactly what they checked, what passed, and what didn’t. “Looks good to me” doesn’t count: a reviewer that ran nothing is marked as one that ran nothing.
Learn more in the docsIllustrative review receipt
| Reviewer | Command | Outcome | Details |
|---|---|---|---|
| Claude· lead | npm run build | Passed | 0 errors, 12s |
| ChatGPT· review | npm test | Passed | 42 tests, 8s |
| Gemini· review | npm run lint | Passed | 0 issues, 3s |
| Grok· review | npm run typecheck | Passed | 0 errors, 6s |
02 / Built around your workflow
The group works in a git worktree on macOS, Windows or Linux. Nothing leaves your machine unless you choose Our Keys, and the app says so before you do.
▾ MyProject
src
tests
package.json
$ ltb run "add rate limiting"
› lead: building…
› reviewers: running checks…
› agreed ✓ exit 0
Use our keys, bring your own, run on the Claude Code, Codex, Gemini CLI and Grok Build subscriptions you already pay for, or connect any OpenAI-compatible endpoint.
Quick for a question, Consensus for a change that matters, Deep when it has to be right. Or leave it on Default and the room decides from what you asked and what the lead actually did.
LetThemBuild is the desktop app where the group builds. LetThemChat, on the web and iPhone, is the same account and the same sessions — for reading what they did, asking the group a question, and steering the next step.
Improve error handling
6:53 AM‹ LetThemChat
Improve error handling
The documentation covers the whole product: how the room reaches agreement, what a reviewer has to do before it may agree, what the app is allowed to touch on your machine, and how the money works. No sign-up to read it.
Ship higher quality code with a group of AIs on your machine.