AI Startup Viktor Raises $75 Million for Slack and Teams Virtual Coworker

Viktor, founded by former Meta engineers, raised a $75 million Series A led by Accel for its AI agent that functions as a virtual coworker in Slack and Microsoft Teams. The startup launched publicly in February 2026 and reached a $15 million annualized revenue run rate within three months, with more than 2,000 organizations now using the product. Viktor connects to systems including Google Drive, Meta Ads, and Shopify, competing against Microsoft Copilot and Salesforce Agentforce.

Viktor founding story

• ▪The Viktor team realized that the email inbox was not the most optimal place for an AI agent, which led them from JaceAI to Viktor
• ▪Before Viktor, Peter Albert and Fryderyk Wiatrowski built JaceAI, an email assistant that worked inside a user's inbox and tried to decide what to do with each incoming message
• ▪Peter Albert and Fryderyk Wiatrowski spent their evenings experimenting with AI, aiming to develop agents that could eventually take over the most tedious parts of knowledge work
• ▪Peter Albert joined Meta with the aim of finding a co-founder
• ▪Peter Albert met Fryderyk Wiatrowski in Meta's AI ranks

Series A funding round

• ▪Accel flew to Warsaw within weeks after Viktor launched
• ▪Viktor's Series A funding round was led by London-based venture capital firm Accel
• ▪Slack cofounders Stewart Butterfield and Cal Henderson participated as angel investors in Viktor's Series A funding round
• ▪Synthesia CEO Victor Riparbelli participated as an angel investor in Viktor's Series A funding round
• ▪Accel partner Zhenya Loginov had met the Viktor founders several times over the past two years as they launched previous products
• ▪Executives from Google DeepMind, Figma, and ElevenLabs participated as angel investors in Viktor's Series A funding round
• ▪Bek Ventures, Kaya VC, Inovo VC, and Tenacity Capital participated in Viktor's Series A funding round
• ▪Viktor raised a $75 million Series A funding round

Product features

• ▪Viktor can connect to systems including Google Drive, Meta Ads, Airtable, Notion, and Shopify
• ▪Viktor reviewed a complex Meta Ads setup and flagged a tweak that saves about $10,000 a week in advertising spending
• ▪Viktor is an AI agent that operates like a virtual coworker embedded inside a company's Slack or Microsoft Teams workspace

Market competition

• ▪Viktor is competing in a market where Microsoft, Salesforce, and other Big Tech companies are racing to build similar AI coworker products

Customer traction

• ▪Viktor reached a $15 million annualized revenue run rate three months after its public launch in February 2026
• ▪Viktor launched publicly in February 2026
• ▪Viktor has more than 2,000 organizations using the product across sectors like e-commerce and technology