Brett Adcock’s Stealthy AI Startup Hark Raises $700 Million at a $6 Billion Valuation

What does it take to launch the first must-have AI consumer product? By Hark’s reckoning, perhaps $700 million. The AI lab, which is building both models and hardware for an AI personal assistant, said on Thursday that it had raised that amount in a Series A round valuing it at $6 billion post-money.

The round was led by Parkway Venture Capital and drew a long list of backers, including Nvidia, Align Ventures, AMD Ventures, ARK Invest, Brookfield, Greycroft, Intel Capital, Prime Movers Lab, Qualcomm Ventures, Salesforce Ventures, and Tamarack Global.

One of the more striking things about the raise is how little Hark has said about what it is actually building. Founder and chief executive Brett Adcock, who also started robotics company Figure.AI and electric aircraft maker Archer, launched Hark in late 2025 with $100 million of his own money to develop an agentic AI system meant to act as a universal interface with the digital world.

Hark expects to release its first multimodal models this summer, and says they will power a personal AI platform that works with existing products and services. The company plans to follow that with hardware devices built specifically for those systems.

The new capital will go toward recruiting top talent in hardware, product design, and AI research, along with securing compute and components. Hark currently has 70 employees and operates a data center running Nvidia B200 GPUs. Its director of design is Abidur Chowdhury, a former Apple product executive, who declined to share new details of the work but said investors were impressed by a series of demos from his team.

There are still more questions than answers. One open challenge is how to give an AI assistant the context of a customer’s life without making the people around the user uncomfortable or compromising their privacy, a problem that wearables like Meta’s glasses and the forthcoming Android spectacles have not clearly solved.