Viktor raises $75M after hitting $15M ARR, per new X thread
Fryd Wiatrowski says Viktor hit a $15M run rate and raised $75M, with backers from Accel to Nat Friedman, as its AI coworkers monetize inside Slack and Teams.
By Ryan Merket ·
Why it matters
If an AI coworker can hit eight figures of ARR by living inside Slack and Teams, it validates a go-to-market that many founders are betting on: build for the workflow, not a new tab. It points to distribution as the differentiator in crowded AI categories.
Pekka Enberg and Glauber Costa (@glaubercosta), the founders behind Viktor, have raised $75 million after reaching a $15 million annualized run rate, according to a thread on X by Fryd Wiatrowski (@frydwia).
The news
Wiatrowski called out Viktor's business traction in chat-first workflows, writing: "Viktor's Series A was the clearest business highlight because it shows AI coworkers monetizing inside Slack and Teams." He did not share a valuation or deal structure in the post, but noted both the $75 million raised and the $15 million annualized run rate as context for the momentum.
The founders and the bet
Enberg and Costa are building Viktor as an AI coworker that sits where teams already work, integrating directly into Slack and Microsoft Teams to drive usage and paid seats from inside the channel rather than in a separate app. The implication in Wiatrowski's summary is clear: real revenue is showing up when AI products meet users in their daily chat surfaces, rather than asking teams to adopt yet another tool.
Who is backing them
In a follow-up post in the same thread, Wiatrowski thanked a long list of backers, including Zhenya Loginov (@zhnlgnv), Accel (@Accel), Daniel Gross (@danielgross), Nat Friedman (@natfriedman), Hersh Desai (@Hersh_Desai), AI Grant (@aigrant), Mati Staniszewski (@mati), Inovo VC, Leonis Capital (@LeonisCapital), Charlie Songhurst, Guillermo Rauch (@rauchg), Alex Bouaziz (@Bouazizalex), and @Max, among others in the thread. The post did not specify who led the round.
Why this channel matters
If Viktor is growing ARR by living inside Slack and Teams, it is a signal that the distribution edge of chat platforms is starting to convert to durable revenue for AI-native apps. The playbook is straightforward: meet users where work happens, reduce adoption friction, and price on usage or seats managed through the workspace. That is a very different motion from selling a standalone AI dashboard.
For Enberg and Costa, the opportunity is to build a product that feels like a teammate rather than a tool, and to leverage the governance and identity already present in Slack and Microsoft 365 for enterprise adoption. With investors ranging from a multistage firm like Accel to operators like Nat Friedman and Daniel Gross, the cap table suggests both patient capital and product-minded angels who have backed many of the current wave of AI infrastructure and apps.
What we do not know yet
Beyond the headline numbers, Wiatrowski's posts did not include details on valuation, exact round size by stage, pricing model, or customer count. Viktor has not, in this thread, disclosed which use cases inside Slack and Teams are driving the bulk of revenue, how the product is deployed in regulated environments, or what the roadmap looks like beyond chat. We will update if Viktor shares more specifics or publishes an announcement.