Silica is a Mac app for AI that stays on your machine — not another tool that sends your chats and files to the cloud. Chat with local models, transcribe voice, generate images, run agents, and build presentations on your Mac. Built for Apple Silicon. No account for the basics. Web search only if you want it. Everything unlocked in beta. After beta, the local core stays free. Some advanced features may become Pro later — we'll be clear before anything changes. Free beta at silicaai.tech.