Greycroft

Hark raises $700M Series A for universal AI interface

Hark, an AI lab founded by Brett Adcock, said on 2026-05-21 that it raised $700 million in a Series A round at a $6 billion post-money valuation. The round was led by Parkway Venture Capital and included a number of strategic investors. Hark is developing an "agentic" personal AI assistant — described by the company as a universal interface to the digital world — and plans to ship its first multi-modal models this summer followed by purpose-built hardware. The startup (70 employees) will use the new capital to hire for hardware, product design and AI research and to secure compute and components; it operates a data center with Nvidia B200 GPUs. Hark has released few product details and company executives acknowledge open questions around privacy and contextual data for consumer assistants.

Sequen Secures $16M for TikTok-Style Personalization Tech

Sequen, a New York startup founded by Zoë Weil and colleagues, closed a $16 million Series A to commercialize real-time personalization and ranking infrastructure for consumer businesses. The company offers its RankTune platform—APIs that expose large-event and real-time ranking models—to enable TikTok-style relevance without requiring massive proprietary datasets or user identities. Sequen says its models make sub-20-millisecond decisions, have processed about 10 billion monthly requests, and delivered measurable revenue lifts for customers (examples include a furniture retailer and Fetch Rewards). The round was co-led by White Star Capital and Threshold Ventures; Sequen has raised $22 million to date and has a 14-person team including hires from Meta, DeepMind and Anthropic.

Yann LeCun's AMI Labs Secures $1.03B for AI Research

AMI Labs, an AI startup co-founded by Turing Award winner Yann LeCun after his departure from Meta, raised $1.03 billion at a $3.5 billion pre-money valuation to develop ‘world models’—AI that learns from real-world data rather than only language. Led by CEO Alexandre LeBrun, AMI positions itself as a research-first lab building on concepts such as JEPA (Joint Embedding Predictive Architecture). The round was co-led by Cathay Innovation, Greycroft, Hiro Capital, HV Capital and Bezos Expeditions and included strategic investors and angels (including Tim and Rosemary Berners-Lee, Mark Cuban and Eric Schmidt). The company plans multi-year research work, will publish papers and open-source code, and names Nabla as its first disclosed partner. AMI will prioritize compute and high-quality talent across Paris (headquarters), New York, Montreal and Singapore, and currently does not plan to generate revenue in the near term.