Twin1 AI raises $20M to put an AI twin behind every knowledge worker

Twin1 AI has launched with $20 million in seed funding and a simple but ambitious pitch: give every knowledge worker an AI twin that knows what they know, and can act on their behalf. The San Mateo startup says the model is meant to keep an individual’s expertise attached to the person who has it, instead of flattening it into a generic corporate chatbot.

The company was founded in 2025 by Lewis Liu, Tom Cahn, Huiting Liu and Jonathan Budd, and it also has a team in London. Three of the four founders came from Eigen Technologies, the London document AI company that was acquired by SirionLabs in 2024 after raising more than $80 million. Liu, now Twin1’s chief executive, co-founded Eigen and led it through that sale.

Twin1’s product plugs into email, meeting records, documents and workplace systems, then operates inside Slack, Microsoft Teams, Outlook, Gmail, Google Drive and SharePoint. Users control what the twin can read and which colleagues can query it. The company says it layers six sets of rules-based and AI-based controls over peer-to-peer and peer-to-AI exchanges, combining corporate policy, inherited permissions and human sign-off so the twin only reveals information to people who are already entitled to see it.

Above the individual twins is a coordination layer called the Twin Network, which is supposed to help twins find the right colleague, move permission-aware knowledge and hand work between teams. Twin1 also offers an enterprise Model Context Protocol server so other agents and enterprise apps can pull governed context from one twin or from the network.

The startup says it has already been running with customers in legal, financial services and energy for more than a year. Named users include Linklaters, Orrick, Dechert, Customers Bank and Aegis Energy, and Twin1 says those customers report the platform handles 30% to 50% of the communications work their knowledge workers would otherwise do themselves. Orrick also took a strategic stake in the round, with Chief Innovation Officer Wendy Butler Curtis calling the product “one of the most exciting developments in the practice today.”

Bessemer Venture Partners, Tribeca Venture Partners and Aramco Ventures co-led the round. EJF Ventures, Tin Alley Ventures, AGI House Ventures, Neo, F-Prime Capital, Btech Consortium, Antiportfolio Ventures, Lakestar and Notion Capital also backed the company, alongside angels including Wiz co-founder Roy Reznik, Notable Capital Managing Partner Hans Tung and Dawn Capital co-founder Haakon Overli. Twin1 says the money will go to hiring in San Mateo and London, sales and marketing, and more work on the platform. Liu also told Artificial Lawyer that the company has a pipeline of more than 400 prospects and plans a self-service version for smaller firms and individual professionals.