Baseten Raises $1.5B for AI Inference Infrastructure

Baseten, a critical player in the AI application infrastructure space, has successfully closed a substantial $1.5 billion Series F funding round. This significant capital infusion, structured across two tranches with valuations reaching up to $13 billion, underscores the escalating demand for specialized AI deployment solutions. The company has now amassed over $2 billion in total funding since its inception.

The investment was spearheaded by prominent venture capital firms including Altimeter Capital, Conviction, and Spark Capital. Further bolstering the round were co-lead investors Sands Capital and Wellington Management, alongside a robust syndicate of other participants: IVP, Greylock, 01A, Blackbird, Durable Capital Partners, Verified Capital, Battery Ventures, and D. E. Shaw Ventures. This broad investor base reflects strong confidence in Baseten's strategy to address the evolving needs of AI development.

Baseten's platform is engineered to empower businesses in deploying and scaling complex AI strategies. It facilitates the integration of cutting-edge frontier models with bespoke, post-trained models tailored for specific operational requirements. This capability is becoming increasingly vital as the distinction between proprietary and open-source models blurs, with application-layer companies now allocating a significant portion of their model expenditure—estimated between 30% and 50%—towards custom-tuned solutions.

The company reports extraordinary growth, with revenue expanding approximately 20 times year-over-year. This rapid ascent is supported by a global infrastructure processing over 1 billion inference calls daily across 87 clusters and 18 distinct cloud environments. The newly acquired capital will be strategically deployed to enhance talent acquisition, expand compute resources, and accelerate enterprise go-to-market initiatives. Baseten is also planning to triple its workforce this year, focusing on bolstering its engineering, research, operations, and sales teams to meet escalating customer demand.

Founded in 2019 and headquartered in San Francisco, Baseten specializes in building the foundational systems software that underpins AI application workloads. This includes essential components like GPU management, autoscaling, observability tools, billing systems, and developer utilities. Their client roster features innovative AI companies such as Abridge, Clay, Cursor, Lovable, Mercor, and OpenEvidence, all of whom rely on Baseten to optimize their AI deployments.

“The future of AI will be built on millions of specialized models, and the companies building the best ones know that post-training has become existential,” stated Tuhin Srivastava, CEO and Co-Founder of Baseten. “It’s how they build intelligence they own, on data that’s theirs, optimized for the customers they serve. The companies closing this loop fastest are using Baseten to build a system that compounds in value over time. We’re grateful to our investors for their conviction that Baseten is where that future gets built, and to the team and customers who’ve made us worthy of it.”

Apoorv Agrawal, Partner at Altimeter Capital, added, “Tuhin and the Baseten team made a bet six years ago that most people weren’t ready to make: that the future of AI would be built on many specialized models, and that the companies building them would need world-class infrastructure to make them real. That bet is paying off in a way that is hard to overstate. The inference market is compounding faster than almost anything we’ve seen, and some of the most sophisticated AI companies in the world are standardizing on Baseten to power it. What we see in Baseten is rare: a company growing at this speed, with this level of customer trust, building infrastructure the entire ecosystem depends on. We are proud to deepen our partnership with this team.”