Flapping Airplanes raises $1B at $6B valuation
Original: Year-old AI lab Flapping Airplanes raises $1B at a $6B valuation
Why This Matters
Signals investor appetite for efficiency-focused AI labs challenging compute-heavy training norms.
One-year-old AI lab Flapping Airplanes raised a $1B Series A co-led by Index and Lux at a $6B valuation, nine months after a $180M seed round that valued it at $1.5B.
Flapping Airplanes, founded by Aidan Smith and brothers Asher and Ben Spector, announced a $1 billion Series A on Wednesday, reportedly at a $6 billion valuation — quadruple its $1.5 billion seed-stage price tag from just nine months ago. Index and Lux co-led the round, with Sequoia, GV, Kleiner Perkins, Valor, Atreides, A*, and Nvidia also participating.
The company's pitch centers on GPU efficiency. Its core product is what the founders call a 'megakernel framework' — software that bundles training, inference, and other tasks into a single GPU kernel, keeping chips busy by overlapping memory-bound and compute-bound workloads simultaneously. The founders argue AI currently leaves most GPU capacity untapped.
The goal: AI systems that train on far less data. 'A model that's a million times more data efficient is probably a million times easier to put into the economy,' Asher Spector told TechCrunch at launch. Smith is a Thiel fellow and ex-Neuralink engineer; Asher holds a Stanford statistics PhD; Ben founded Prod, a semi-secretive MIT-originated student accelerator that Sequoia partner David Cahn called 'one of the most powerful talent incubators in Silicon Valley.' The fresh $1 billion will go toward hiring and turning that efficiency thesis into working models.