A $75M Series A led by Accel - the largest ever raised by a Polish-founded company. But the angel list tells the real story： Stewart Butterfield and Cal Henderson wrote checks into an AI agent that lives inside the product they built. When the Slack co-founders back the AI coworker inside Slack， that's not hype capital， it shows trust.

Viktor runs autonomously on a schedule， connects to 3，000+ tools， and delivers finished work products instead of chat replies. The team at Zeta Labs has been building since 2023， 12，000+ teams already use it.