Tether releases compact AI agent for personal devices
Key points
- Tether AI Research has released QVAC BotPsy, an open-weight AI model with 800 million parameters.
- The model outperformed Alibaba’s Qwen3.5-2B-Think, which has 2.5 times more parameters, across four core evaluations.
- The release advances Tether’s strategy to bring AI assistants onto user-controlled devices.
Tether has released an 800-million-parameter AI agent that outperformed models 2.5 times larger across key evaluations.
Called QVAC BotPsy, the open-weight model specialises in using tools and APIs to complete tasks on personal devices.
“Running AI locally can reduce the need to send that information to centralized providers,” said Tether CEO Paolo Ardoino.
Across six benchmarks, BotPsy outperformed every tested model with 1.2 billion parameters or fewer.
On four core evaluations, BotPsy roughly doubled its underlying Qwen3.5-0.8B-Think model’s scores.
The model also outperformed Alibaba’s Qwen3.5-2B-Think, despite having 60% fewer parameters.
BotPsy joins Tether’s QVAC ecosystem, alongside specialised models for vision, speech, health-related tasks and translation.
The release strengthens Tether’s push towards locally processed AI, giving users greater control over personal data and device permissions.
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