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Viktor Raises $75 Million Series A Led by Accel for Slack-Based AI Coworker

aiai-fundraisingai-productsai-agents-codingai-enterprise-tools 2 posts · 2 accounts

Viktor, the AI coworker developed by Zeta Labs, has raised a $75 million Series A round led by Accel. The company said it reached a $15 million annualized revenue run rate in 10 weeks.

Viktor operates inside Slack, runs autonomously on a schedule and connects to more than 3,000 tools. Built since 2023, it is used by more than 12,000 teams, and the angel backers included Slack co-founders Stewart Butterfield and Cal Henderson.

From the sources (2 posts)

@kimmonismus

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

@frydwia

Today, we’re announcing Viktor’s $75M Series A, led by @Accel . @viktor__com was supposed to be a small experiment. It became the AI coworker 10x'ing real businesses. $15M in annualized revenue run rate. In 10 weeks. – Small companies s

Preview built on a synthetic news corpus (16 weeks, Apr–Jul 2026). Impact calls are model reads, not price data.

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