Choosing a model
The model picker is the router: pick a model, and your turns run through it.
Pick a Claude model and building runs through your Anthropic key; pick a GPT model and it runs through your OpenAI key. The same tools fire identically either way. Claude is the default.
Where AI runs, and where it never does
AI is spent at building time. Published apps and websites run with zero model calls; visitors never consume your keys.