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Silicon Valley’s AI wunderkind launches Underdog, the most private Instinct/Muse competitor yet
Self‑taught coder Sigil Wen, a former Thiel Fellow who hacked alongside Andrej Karpathy, Aravind Srinivas and Noam Brown, launched Underdog on Monday. The assistant runs entirely on‑device on macOS and Windows PCs, with other platforms coming soon. Powered by Wen’s Husky inference engine, Underdog uses a 27‑billion‑parameter model fine‑tuned from Qwen‑3.8‑27B and matches benchmark results of Claude Opus 4.6. It encrypts account keys and keeps all user data local, removing cloud processing. Underdog will be free initially [...]