Underdog offers an invite-only local AI assistant for personal tasks

Summary

Underdog presents an invite-only personal AI assistant for email, calendars, meeting notes, dictation and errands. The service says its AI processing runs on the user’s computer rather than a cloud AI service, while email synchronizes directly between the computer and the user’s email provider. It stores recordings, notes, transcripts and inspectable memories locally, and says it removes remote images, scripts and tracking pixels before processing. Each account has a device-held vault key, and a “Naval mode” can prevent the application from calling home. The product currently supports Macs with Apple silicon and has a Windows beta; iPhone, iPad, Android and Linux versions are described as forthcoming. Underdog identifies Woof 4B as its fast model, claiming an estimated 115 tokens per second on a MacBook Air, and describes Underdog 27B as its larger model, running at 28 tokens per second. The page says the 27B model is built on Qwen 3.8 27B and uses the cited Artificial Analysis Intelligence Index score of Claude Opus 4.6 Max, rather than presenting a separate score. The company says Leviathan Security Group found all 20 requirements in an App Defense Alliance assessment passed, while further security testing is ongoing. Access is available today with an invite and a compatible Mac, while Windows remains in beta.