LetThemBuild puts Claude, ChatGPT, Gemini, Grok, or any model you bring into one workspace on your machine. One AI leads and writes the code. The others review by re-running your build and tests, and you get a receipt of exactly what was checked. Every conversation becomes a ticket on a Kanban board, teams can set budgets and approval rules, and it works with VS Code, Cursor and GitHub pull requests. Use our keys, your own API keys, or the CLIs you already pay for.