Starcloud has raised $170 million in a Series A funding round, reaching a valuation of $1.1 billion and becoming the fastest company to achieve unicorn status in the history of Y Combinator. The milestone comes just 17 months after the company completed the accelerator program, underscoring growing investor confidence in next-generation AI infrastructure.
The funding round was led by Benchmark and EQT Ventures, with participation from a wide range of global investors. The raise more than doubles the size of the next-largest Series A in Y Combinator’s history and brings Starcloud’s total capital raised to $200 million.
Starcloud is developing a novel approach to scaling artificial intelligence infrastructure by building data centers in low Earth orbit. The company aims to address a growing bottleneck in terrestrial AI computing, where energy constraints, land limitations, and long permitting cycles are slowing the expansion of traditional data centers.
According to Starcloud, constructing new data centers and energy infrastructure on Earth can take up to five years, creating delays in meeting the rapidly increasing demand for AI compute. By contrast, orbital data centers can leverage virtually unlimited solar energy, offering a potentially scalable and sustainable alternative.
CEO and co-founder Philip Johnston said the funding will support the rapid expansion of the company’s orbital infrastructure, enabling it to meet rising commercial demand for high-performance, energy-efficient AI computing.
Starcloud has already demonstrated significant technical progress. With just $3 million in pre-seed funding, the company designed, built, and launched its first satellite, Starcloud-1, within 21 months. Launched in November 2025, the mission achieved several industry firsts, including deploying an NVIDIA H100 GPU in orbit, conducting AI model training in space, and running inference workloads, including a version of Gemini.
The company is preparing to launch its next satellite, Starcloud-2, later this year. The satellite is expected to feature the largest commercial deployable radiator sent to space and generate significantly higher power compared to its predecessor. It will also be the first to support commercial edge and cloud workloads, with early customers including Crusoe and partnerships with Amazon Web Services, Google Cloud, and NVIDIA.
As part of the investment, Chetan Puttagunta, General Partner at Benchmark, will join Starcloud’s board. He highlighted the company’s potential to address critical challenges in scaling AI infrastructure, citing its advancements in power, cooling, and manufacturing efficiency.
The newly raised capital will be used to accelerate the development of Starcloud-3 satellites, expand manufacturing capabilities, hire additional talent, and secure future launch contracts.
The oversubscribed round also included participation from investors such as NFX, Nebular, and Y Combinator, along with strategic contributors including Monolith Power Systems. Angel investors include Stephen Wilson, Dennis Muilenburg, and Kevin Johnson.
