Underdog introduces an on-device AI assistant and announces its backers

Underdog announced backing from a16z, Khosla Ventures, Hummingbird VC and Anthology. It says its personal AI runs on Macs and keeps user data on-device rather than on company servers, with versions planned for iOS, Windows, Linux and Android. The company also claims its Underdog 27B model beats Claude Opus 4.6 Max on most benchmarks and can run on a MacBook or iPhone.