A one-year-old AI lab with nothing for sale is now worth $6 billion. Flapping Airplanes said on Wednesday, Oct. 21, 2026 that it raised a $1 billion Series A at a $6 billion valuation, TechCrunch reported. Index Ventures and Lux Capital co-led the round, which Bloomberg first reported; Sequoia Capital, Alphabet's GV and Kleiner Perkins also took part, and Nvidia counts itself among the backers, Quartz said.
The numbers
- The valuation is four times the level of its January round, a $180 million seed at $1.5 billion (Tech Funding News).
- Total funding now stands at $1.18 billion; Index partner Mark Xu joins the board (Tech Funding News, Index Ventures).
- TechCrunch also lists Valor, A* and Atreides among investors, per Tech Funding News.
What it's building
The San Francisco lab, founded in late 2025 by Ben Spector, Asher Spector and Aidan Smith, is one of the research-first "neolabs," Quartz said. Its bet is training capable models with far less data and compute, including custom GPU software. "If the future of AI depends on getting more from less, we can't think of a better team to shape it," Index wrote. Asher Spector told Bloomberg the lab plans to sell its technology eventually to make AI cheaper for other companies, but the performance claims so far are the founders' own, Tech Funding News noted.
Why it matters
Compute is the biggest cost for AI labs, including xAI, whose Colossus clusters run on Nvidia GPUs. Related: Jensen Huang on neocloud demand and OpenAI's $30 billion fundraising push.