Castforge beta · open and free

Start building with Castforge

Castforge is a native desktop workspace for the AI coding subscriptions you already have. Connect Claude, Codex, Gemini, a local model, or a free GitHub Copilot sign-in, and just start coding. You pay each provider directly for model usage; Castforge is the workspace on top. Download it, sign in with a magic link, and start coding now, free for the duration of the beta.

What you get

Download for WindowsCreate your free account