AI brains and your own key
Start with the built-in brain: no account, no key. A cloud AI on your own account comes next.
## The built-in brain, today The Playfellow window ships with a built-in brain. It needs no account and no key, it runs on your PC, and it plays the practice games. Pick it on the Play screen under Brain. ## Cloud AI with your own key, next Cloud AI is faster and smarter on games the built-in brain has never seen. You pay the AI company directly (typically $3–20 a month), and the key is yours. - Gemini (Google): Google AI Studio - Claude (Anthropic): Anthropic Console - OpenAI: OpenAI Platform Choosing a cloud AI and adding your key inside the new window comes in the next update. This page will show the exact steps when it does. ## Where your key will live In Windows' own credential store on your PC. Playfellow sends it only to the AI company you chose, never to us.