Tether AI Research describes BotPsy, a 0.8B on-device assistant model, in a Hugging Face blog post

In a Hugging Face blog post, Tether AI Research described BotPsy, a 0.8B-parameter agentic language model built on Qwen3.5-0.8B for function calling and on-device deployment. The model is designed as a personal assistant for tasks such as web search, travel, commerce, device control, files, calendars, and messaging. Tether says BotPsy outperforms all tested models up to 1.2B parameters on tool-use and agentic benchmarks, but it is intended only for low- to medium-difficulty work.