Viktor Raises $75 Million to Put an AI Coworker Inside Slack and Teams
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Peter Albert joined Meta with a specific goal in mind: to find a co-founder. After landing in the company’s AI ranks, he met Fryderyk Wiatrowski, and the two spent their evenings tinkering with AI agents that could take over the most tedious parts of knowledge work. Several products later, that partnership has produced Viktor, an AI agent that behaves like a virtual coworker living inside a company’s Slack or Microsoft Teams workspace.
Viktor has now raised a $75 million Series A led by London-based venture firm Accel, with participation from Bek Ventures, Kaya VC, Inovo VC, and Tenacity Capital. A roster of angel investors joined as well, including Slack co-founders Stewart Butterfield and Cal Henderson, Synthesia chief executive Victor Riparbelli, and executives from Google DeepMind, Figma, and ElevenLabs. Just three months after Viktor’s public launch in February, the company says it has reached a $15 million annualized revenue run rate, with more than 2,000 organizations using the product across sectors such as e-commerce and technology.
The product is designed to act like a colleague. Team members message the bot to ask for help with tasks like pulling a report or building an internal app. Viktor connects to the systems a business already relies on, such as Google Drive, Meta Ads, Airtable, Notion, and Shopify, and builds up a persistent memory of how the organization works. The company says it can also scan public channels and suggest new workflows it could take over. In one instance, Wiatrowski said Viktor reviewed a complex Meta Ads setup and flagged a change that saves about $10,000 a week in ad spending.
Before Viktor, the founders built JaceAI, an email assistant that operated inside a user’s inbox and tried to decide what to do with each incoming message. Wiatrowski said the ideas behind Jace eventually led to Viktor once the team concluded that the inbox was not the best home for an AI agent. JaceAI continues to operate as a separate company.
Accel partner Zhenya Loginov said the firm had met the founders several times over the previous two years as they launched earlier products. Those tools impressed on technical grounds but felt too niche to support a large company. When Viktor launched, Accel flew to Warsaw within weeks, drawn to the fact that the product was built for teams rather than individuals.
Viktor is part of a wider wave of companies building agentic AI coworkers, and it faces stiff competition. Microsoft, Salesforce, and other large technology companies are racing to ship similar products, and they can bundle AI assistants into existing enterprise contracts as the default option. Slack’s parent already has its Agentforce product, and Microsoft has been weaving Copilot into Teams and the broader Office suite. Viktor’s backers argue the market will grow to the size of the collaboration software category, with room for several large players to serve different slices of the economy. Wiatrowski says Viktor’s edge is that it plugs into far more of a company’s tools and was designed from the start to work across an entire team.
The company has been investing in safety and governance as well. Organizations can restrict who is allowed to use sensitive integrations, and the product flags connections that look personal, such as private email, encouraging users to keep them private by default. The team has also built prompt and product-level guardrails so the agent behaves carefully, though, like any AI bot, Viktor can still occasionally act in unintended ways. Viktor offers a free tier so teams can try it before committing to a subscription based on credit usage, which can grow costly depending on how heavily it is used.