Series A · AI
Flapping Airplanes raises $1bn Series A for efficient AI research
Index Ventures and Lux Capital co-lead the AI research company’s new financing.
Flapping Airplanes announced a $1 billion Series A on October 21, co-led by Index Ventures and Lux Capital. The financing follows its separate $180 million seed round earlier in 2026.
The San Francisco company researches ways to improve AI efficiency across GPU execution, training and inference. Index partner Mark Xu is joining its board as the investor doubles down on the business.
Use of funds
Advance research into more efficient AI training and inference
Funding history
Series A · This round$1B
Seed$180M