Ex-Google X trio wants their AI to be your second brain — and they just raised $6M to make it happen

image via TechCrunch

September 10, 2025, 12:00 PM

• •TwinMind captures audio passively in the background to build a personal knowledge graph.
• •The app runs offline and offers real-time translation in over 100 languages.
• •TwinMind has a Chrome extension for gathering additional context through browser activity.
• •The startup has introduced the TwinMind Ear-3 model and a Pro subscription.

TwinMind, founded by former Google X scientists, offers an AI-powered app that passively captures and processes ambient speech to build a personal knowledge graph. The app, which has raised $5.7 million in seed funding, generates AI-powered notes and to-dos, supporting offline functionality and real-time translation in over 100 languages. TwinMind differentiates itself from competitors by continuously capturing audio in the background, using a custom-built low-level service. In addition to the mobile app, the startup offers a Chrome extension, and has introduced a new AI speech model, Ear-3, with a Pro subscription and plans for further expansion.

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