Sigil Wen, backed by a Silicon Valley's who-who, has built an on-device AI assistant that promises to be free, fully private, and capable for everyday tasks.
Silicon Valley’s AI wunderkind launches Underdog, the most private Instinct/Muse competitor yet
TE TechCrunch 
Key takeaways
Sigil Wen, a Thiel Fellow, launched Underdog, a private AI assistant that runs on-device for enhanced security.
- Underdog runs entirely on users' devices, keeping data private.
- It uses a 27-billion parameter model fine-tuned from Qwen3.8 27B.
- Underdog includes encryption for user account keys.
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- TechCrunch Silicon Valley’s AI wunderkind launches Underdog, the most private Instinct/Muse competitor yet (this story)
