When the Slack co-founders, the ElevenLabs co-founder and Accel all back the sam
By Joanna Lambadjieva · May 20, 2026 · Curated by George's Blog
When the Slack co-founders, the ElevenLabs co-founder and Accel all back the same 16-person team in Warsaw... you pay attention.
Two founders (Fryd and Peter) just closed what's reportedly the largest Series A ever raised by a Polish-founded company. And the cap table reads like someone raided the "people who actually built the modern internet" directory: Accel led, with Daniel Gross, Nat Friedman, the Slack co-founders (Stewart Butterfield + Cal Henderson), Mati Staniszewski (ElevenLabs co-founder), Harry Stebbings (20VC), Charlie Songhurst, Koen Bok (Framer), and Nico Rosberg.
The company is viktor.com , an AI coworker that lives natively inside Slack and Microsoft Teams, connected to 3,000+ tools.
As a Bulgarian, I have a soft spot for Eastern European AI companies punching above their weight. There's something exciting about watching this region attract Silicon Valley's best investors rather than the other way around. Warsaw, not San Francisco.
viktor.com sits in my Slack channels and handles tasks faster than most team members. Worth checking out