Viktor Raises $75M Series A from Accel to Integrate AI into Slack and Teams
May 20, 2026 - 7:11 am
Warsaw- and Munich-based AI-agent startup Viktor, founded by former Meta engineers Peter Albert and Fryderyk Wiatrowski, has secured $75 million in Series A funding led by Accel.
The round also included Bek Ventures, Kaya VC, Inovo VC, Tenacity Capital, and an impressive list of angel investors:
- Slack co-founders Stewart Butterfield and Cal Henderson
- Vercel CEO Guillermo Rauch
- Deel CEO Alex Bouaziz
- ElevenLabs CEO Mati Staniszewski
- Framer founder Koen Bok
- Instacart co-founder Max Mullen
- Sana founder Joel Hellermark
- 20VC's Harry Stebbings, Lenny Rachitsky, Shaan Puri, Charlie Songhurst, Daniel Gross, and Nat Friedman.
Viktor boasts an impressive customer growth trajectory, achieving $15 million in annual recurring revenue (ARR) within ten weeks. Over 12,000 teams have already integrated Viktor into their Slack or Microsoft Teams workspaces.
The company positions itself as a team member rather than a personal assistant, automating multi-step workflows by integrating with over 3,000 SaaS tools.
Key Differentiators:
- Victor's "modern workplace AI" category positioning competes with frontier model labs offering APIs and downstream platforms.
- European roots with a commercial focus on two American communication platforms: Slack and Microsoft Teams.
- Strong customer testimonials highlighting significant cost savings and revenue generation.
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