Sigil Wen Launches Underdog: A Private, On-Device AI Assistant
Key Takeaways
- Underdog runs entirely on-device to ensure maximum user privacy.
- The platform uses a 27B parameter model for high-performance tasks.
- Revenue is generated via transaction fees rather than data mining or subscriptions.
- The tool is currently in invite-only beta for Mac and Windows.
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Underdog runs locally on Macs and Windows PCs, with mobile support in development. By keeping data on the user's device and encrypting account access, Wen aims to challenge the privacy-invasive business models of current AI giants. The assistant is powered by a fine-tuned Qwen3.8 model, which Wen claims matches the performance of previous industry leaders.
Financially, Underdog avoids the subscription model by leveraging a transaction-based revenue stream. By taking a small percentage of payments processed through the AI, the company aligns its incentives with the user rather than advertisers, ensuring that personal data remains private.
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