Tether Releases 800M-Parameter On-Device AI Agent Model BotPsy

TechFlow reports that, on November 11, according to a Tether announcement, Tether AI Research released the open-weight model QVAC BotPsy, an 800 million-parameter model based on Alibaba's Qwen3.5 architecture, designed for tool calling and agentic tasks on personal devices.

Tether said that in four evaluations—BFCL v4, ACEBench, τ-bench, and ToolSandbox—BotPsy scored approximately twice as high as its base model and outperformed the 2 billion-parameter Qwen3.5-2B-Think. The model can convert user requests into local tool calls, and developers can adapt and deploy its weights in their own systems.

Source: TechFlow