Tether's Tiny AI Agent Beats Models 2.5 Times Its Size at Controlling Your Phone
Summary
Tether unveiled QVAC BotPsy, an open-weight, 800-million-parameter AI agent fine-tuned from Alibaba’s Qwen3.5-0.8B to use software tools on personal devices. In Tether’s tests, it outperformed larger models across five of six evaluations, scoring 44.0% on BFCL v4 and 58.7% on ACEBench. BotPsy is part of Tether’s QVAC effort to enable locally run AI, and is available under the Apache 2.0 license, including compressed versions for lower-memory devices. Tether has not announced a consumer assistant release date; training data and code were not provided.
