Tether's pocket-sized AI agent outsmarts models twice its size at phone tasks

Tether, best known for its massive USDT stablecoin, has developed a surprisingly capable AI agent called BotPsy with just 800 million parameters. Built on Alibaba's Qwen3.5-0.8B architecture, this small model specializes in taking action on devices—handling multi-step tasks like adjusting phone settings, clearing storage, and sending messages without needing cloud servers.

In company testing, BotPsy outperformed models 2.5 times larger on five out of six tool-use benchmarks, suggesting that effective AI assistants don't always require enormous scale. The agent expands Tether's QVAC ecosystem of local AI models for specialized applications. This breakthrough shows how optimized, smaller models could bring sophisticated AI capabilities directly to personal devices while keeping data private.