Your newest work colleague might not be joining you at the water cooler or at the team's next happy hour: AI agents are infiltrating the workplace, and one startup building those — aptly named Coworker — just cleared a big funding round to put AI teammates to work.

Jeff Huber, managing director at Triatomic Capital, led Coworker's $13 million seed funding round, which was announced on Tuesday. Ramtin Naimi of Abstract Ventures, Mallun Yen of Operator Collective, Tim Young of Eniac Ventures, and Clark Golestani, Ken Hausman, and Jack Greenfield of K2 Access Fund also participated in the raise.

Based in San Francisco, Coworker bills itself as a general-purpose AI teammate that can research, plan, and execute high-level work just like an experienced colleague can. The startup said its technology, which about 25 companies have been beta testing since late 2024, has been used across engineering, product management, sales marketing, and operations functions.

For example, a Coworker can act as an engineering teammate to write code, create and review pull requests, and automate release notes, keeping human developers focused on shipping new features. It can also act as a sales teammate, analyzing sales calls and generating proposals and follow-up emails.

Coworker uses its own products at work, which gives the startup a leg up in shipping new features and developing the technology, said CEO and cofounder Alex Calder. For example, Coworker's agents do work like drafting product requirement documents based on customer feedback, creating tickets, writing code, and turning that code into sales talking points, he said.

In the last six months, we've seen our internal team going from AI is good at giving me information to AI is good at using that information to do work for me, Calder told Business Insider. That's only possible when you give AI really rich context on your company, your goals, and how you do work.

More on Coworker’s fundraising pitch deck on Business Insider

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