# Flapping Airplanes raises $1.0B Series A led by Index Ventures

> Flapping Airplanes, based in United States, has raised $1.0B in a Series A led by Index Ventures and Lux Capital, announced on 21 October 2026.

Source: https://millionrounds.com/news/rounds/flapping-airplanes-series-a-2026-10 (Millionrounds; every figure on the page links to its filing or article)

Raised **$1.0B** 10 sources reported it

Stage **Series A** 1 earlier round on record

Investors **13** 2 named as lead

Where **US** United States

AI Developer Tools

## How big is it?

Against every equity round we recorded in the twelve months to 21 October 2026. Ranks count companies, so the same raise reported twice is counted once.

**#47** equity round of the last twelve months

**#3** Series A of 777 in that time

**#28** round in United States, of 1,245

This round **$1.0B**

Median Series A **$20M**

50 times the median Series A of the last twelve months.

## Who invested

- [**Index Ventures** 119 rounds in the last twelve months *Led*](https://millionrounds.com/fund/index-ventures)
- [**Lux Capital** 93 rounds in the last twelve months *Led*](https://millionrounds.com/fund/lux-capital)

Also in the round

- [Sequoia Capital](https://millionrounds.com/fund/sequoia-capital)
- [Kleiner Perkins](https://millionrounds.com/fund/kleiner-perkins)
- [Google Ventures](https://millionrounds.com/fund/gv)
- [Valor Equity Partners](https://millionrounds.com/fund/valor-equity-partners)
- [Atreides Management](https://millionrounds.com/fund/atreides-management)
- [Kevin Hartz](https://millionrounds.com/fund/a-star-co)
- [XTX Ventures](https://millionrounds.com/fund/xtx-ventures)
- [Alphabet's GV](https://millionrounds.com/fund/alphabet-s-gv)
- [Sequoia Capital Operations](https://millionrounds.com/fund/sequoia-capital-operations)
- [Kleiner Perkins Caufield & Byers](https://millionrounds.com/fund/kleiner-perkins-caufield-and-byers)
- [Jump Trading Group](https://millionrounds.com/fund/jump-trading-group)

## Funding history

- October 2026 Series A **$1.0B**
- January 2026 Seed **$180M**

$1.2B raised across the 2 rounds we hold.

## Reported by

- fr.qz.com 21 October
- Silicon Angle 21 October
- Leap Ventures 21 October
- briefia.fr 21 October
- cadena3.com 21 October
- newscord.org 22 October
- Tech Funding News 22 October
- TechStartups 22 October
- ambito.com 22 October
- thedailystar.net 22 October

The round's figures come from these reports; each link opens the original.

## Other big rounds that week

[**Kalshi** $1.0B Series G](https://millionrounds.com/news/rounds/kalshi-series-g-2026-10)[P **Pathos AI** $237M Series E](https://millionrounds.com/news/rounds/pathos-ai-series-e-2026-10)[W **Warhound** $200M Seed](https://millionrounds.com/news/rounds/warhound-seed-round-2026-10)[W **Warp Sciences** $215M Series A](https://millionrounds.com/news/rounds/warp-sciences-series-a-2026-10)[**Xona** $250M Series D](https://millionrounds.com/news/rounds/xona-series-d-2026-10)[**Tractian** $130M Series D](https://millionrounds.com/news/rounds/tractian-series-d-2026-10)

[The company **Flapping Airplanes on Millionrounds** *→*](https://millionrounds.com/company/flapping-airplanes)[Weekly roundup **Week of 19 October** *→*](https://millionrounds.com/news/weekly/2026-10-19)[Monthly roundup **October 2026** *→*](https://millionrounds.com/news/monthly/2026-10)

**How this article is made**

We write one for every equity round of $100M or more that at least two sources reported. It is put together from our record of rounds, not rewritten from the reports: the ranks and medians count every equity round we read in the twelve months to the round's date. [How we read rounds](https://millionrounds.com/methodology) · [Report a mistake](https://millionrounds.com/corrections)