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Croatian-founded Daytona raised a $60M Series B at a $1B valuation led by FirstMark, as demand for AI agent sandboxes lifts its run rate 25-fold in 2026.
Key Takeaways
- Daytona raised $60M at a $1B valuation, led by FirstMark Growth, bringing total funding to about $91M.
- The round follows a $24M Series A from February 2026, also led by FirstMark.
- Revenue run rate is up roughly 25-fold since January, from an undisclosed base.
Lead
Daytona, a cloud platform that gives AI-generated code and autonomous agents isolated machines to run in, announced a $60M Series B on October 20, 2026. FirstMark Growth led the round at a $1B valuation. The three founders are Croatian engineers: Ivan Burazin (CEO), Vedran Jukic (CTO) and Goran Draganic (Chief Architect). The company is now Croatia's third unicorn, after Infobip and Rimac Automobili.
What Does Daytona Actually Sell?
Daytona sells programmable sandboxes: isolated computing environments where an AI agent can execute code, call tools, browse the web and manage workflows without touching a customer's production systems. The company says its environments spin up in tens of milliseconds, against minutes for conventional cloud virtual machines. It offers Linux, Windows, macOS and GPU variants on a single platform, which it markets as the Agent Cloud.
The pitch is that every agent needs its own computer, and that agents will multiply faster than humans can provision machines for them. Daytona competes for that workload with the large cloud providers and a growing group of sandbox startups. It displaces, in practice, the homegrown container setups that AI labs and coding-tool makers built when agents were still experiments.
Who Else Invested?
Existing investors, including FirstMark Capital, E2VC, Upfront Ventures and Pace Capital, returned for the round. New strategic backers include Qualcomm Ventures, Samsung Next and Okta Ventures. Evergreen, Alumni Ventures and Torch Capital also joined.
The angel list is unusually long for a Series B. It includes Patrick Collison of Stripe, Tobi Lutke of Shopify, Aravind Srinivas of Perplexity, Eric Yuan of Zoom, Olivier Pomel of Datadog, Adam D'Angelo of Quora and Brendan Foody of Mercor. Those names are founders of companies that buy or build agent infrastructure themselves, which makes them customers, distribution and validation at once.
Why Is the Valuation Jump So Steep?
The valuation jump is steep because the revenue curve is. Daytona closed its Series A in February 2026, eight months before this round, and its run rate has grown about 25-fold since January. One report put average monthly growth at roughly 51%. The company has not disclosed the absolute revenue figure, and a 25x multiple on a small base can still be a modest number.
That gap is the main caveat. A $1B price on a company with a Series A under a year old implies investors are paying for the trajectory of agent adoption, not for current earnings. The round also arrives after a strategic reset: Burazin built Daytona's earlier incarnation around developer environments before reorienting it toward agent infrastructure. The pivot paid off quickly. Whether the demand holds depends on how many agents move from demos to production workloads.
How Will the Money Be Used?
Daytona plans to expand its go-to-market sales team and hire more engineers, according to the company. Total funding stands at about $91M across pre-seed, seed, Series A and Series B rounds. Of the Series B, roughly $50M reportedly came from existing investors, a pattern that signals insiders saw the Series A price as cheap rather than as a ceiling.
What Comes Next for Agent Infrastructure?
Sandboxes are becoming a distinct infrastructure category, and the buyers are concentrated: frontier AI labs, coding assistants and enterprise teams building internal agents. Concentration cuts both ways. A handful of large customers can drive fast growth, but they can also build in-house or switch providers when the large clouds tighten their own offerings.
Pricing pressure is the likely first test. If sandbox startup times converge across vendors, differentiation will shift to security isolation, compliance, multi-operating-system support and cost per agent-hour. Daytona's Windows, macOS and GPU coverage is aimed at that second phase.
Outlook
Daytona has gone from Series A to unicorn in eight months on the strength of a 25-fold run-rate increase, a FirstMark-led round and an angel roster drawn from the companies it hopes to serve. The undisclosed revenue base, customer concentration and competition from hyperscalers are the open questions. The next signal will be whether the sales hires convert agent experiments into recurring contracts.
