
Tether’s 0.8B BotPsy fits a tool-calling agent on a phone, and says keep it away from your money
Built on Qwen3.5-0.8B, BotPsy runs on-device for calendar, email, search, travel and settings, and beats a model 2.5x its size on five of six tool-use benchmarks. Its makers are blunt about limits: 31% unsafe responses under prompt injection and no sensitive uses.









