Flapping Airplanes raises $1 billion at a $6 billion valuation, with no product yet

The San Francisco AI lab, founded in late 2025, wants to train AI with far less data and computing power. Index Ventures and Lux Capital led the round, and its valuation has quadrupled since January.

Published October 25, 2026 9:04am EDT | Updated October 25, 2026 6:34pm EDT · 2 min read

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Key points

Raised $1 billion at a $6 billion valuation, Bloomberg reported on October 21, 2026
Led by Index Ventures and Lux Capital, with Sequoia, GV, Kleiner Perkins and Nvidia
Founded in late 2025; raised a $180 million seed round in January
Working on AI that needs less data and compute, including its own software for Nvidia chips

A year-old AI lab with no product on the market is now worth $6 billion. Flapping Airplanes, a San Francisco research startup, has raised $1 billion, Bloomberg reported, according to TNW.

Who invested

The round was led by Index Ventures and Lux Capital. Sequoia Capital, Alphabet's GV and Kleiner Perkins also took part, and Nvidia is an investor.

The valuation has quadrupled since January, when the company raised a $180 million seed round.

What Flapping Airplanes is building

The startup wants to make AI cheaper to train and run. Co-founder Asher Spector told Bloomberg:

"The basic thesis is demand for AI is going to outpace chip and data supply."

The company is working on ways to train models with less data and less computing power, and to get more out of each chip. Spector said even 10% more performance per chip would be "tremendously economically valuable." To get there, co-founder Aidan Smith said the team has been writing its own version of the software that runs Nvidia's graphics chips.

The plan is eventually to sell the technology to other companies to make their AI cheaper. Flapping Airplanes was founded by Spector, his brother Ben Spector, and Smith.

Why the odd name?

It refers to the ornithopter, an old aircraft design with flapping wings. Spector said it stands for combining the strengths of natural and artificial intelligence.

The rise of 'neolabs'

Flapping Airplanes is one of a growing group of so-called "neolabs": startups that do research first and build products later. Others include Yann LeCun's AMI Labs, which raised about $1 billion in March, and Mirendil, which raised $200 million in June, according to TNW.

Why it matters

AI companies are spending enormous sums on chips and data centers. A lab that could cut those costs would be valuable to almost everyone in the industry, which explains why investors are willing to pay up before there's a product. It also shows the risk: at a $6 billion valuation with nothing on sale yet, there's little room for the research to disappoint.

Chips are the other half of the same race. Read about NVIDIA's RTX Spark laptops and Microsoft's Maia 300 chip.

Sources

AI lab Flapping Airplanes is now worth $6B, four times its January value (TNW)

Source: TNW

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