- Air Street Capital closes a $232 million Fund III, making it Europe’s largest solo GP venture fund ever raised.
- Check sizes range from $500,000 to $15 million, with select growth investments up to $25 million.
- The portfolio includes eight unicorns — ElevenLabs, Black Forest Labs, Synthesia, Wayve, and Poolside among them.
- Founder Nathan Benaich has grown total AUM to $400 million from a $17 million debut fund in 2020.
From $17 Million to $232 Million in Six Years
Air Street Capital has closed a $232 million Fund III to back early-stage AI companies across Europe and North America. Led by sole general partner Nathan Benaich, the London-based firm now manages roughly $400 million in assets — up from $17 million at inception in 2020. Fund II was $121 million, meaning the firm has nearly doubled its fundraise with each vintage.
The raise makes Air Street the largest solo GP venture fund ever raised in Europe, according to Tech.eu. Check sizes will range from $500,000 to $15 million at the early stage, with growth investments reaching up to $25 million. “Fund III launches into what I believe is the most transformational period in technology of our generation,” Benaich said. “Capabilities that seemed like magic a decade ago are now real, usable, and creating enormous value.”
Eight Unicorns and a Track Record That Backs the Model
Benaich has been investing in AI since 2013, years before deep learning left the research lab. The portfolio now includes eight unicorns: Synthesia, which serves over 90% of the Fortune 100 with AI video; ElevenLabs, one of Europe’s standout generative AI companies; Black Forest Labs, whose FLUX models are among the most widely used open-source visual AI tools; and Poolside, a frontier AI lab serving enterprise and government clients. On the exits side, Adept was acquired by Amazon, Graphcore by SoftBank, and Valence Discovery by Recursion.
The solo GP model is core to Air Street’s thesis. Without partnership committees or consensus-driven decision-making, Benaich argues he can move faster on term sheets and maintain a consistent investment philosophy. It is a structure that forces conviction — every check is a single person’s call. Air Street also runs the State of AI Report, now in its ninth edition, and the Air Street AI Network of roughly 3,000 vetted researchers and builders. In a European VC landscape increasingly crowded with mega-funds, Benaich is betting that one sharp investor with deep AI fluency can outperform the committee.
