Well Run profileThe Chase Pack · #528 of 720

Position 528

Flapping Airplanes

AI research lab building far more data- and compute-efficient models and GPU megakernels

Pace
5:20/kmSteady2.0
Distance
Distance Unproven.
Open ops roles
—
Last week
—
Move
New
Peak
#511
Weeks in the 100
0
The Chart →
Rank and score over time
Board rank
#501#511#521#511Oct 25
Pace score
02462Oct 25

One point per Sunday re-rank, tracking since Oct 25. The lines fill in week by week.

Sprint 3:30/km
Race 4:05/kmPeriodic Labs
Steady 5:20/kmFlapping Airplanes
Cool-down 6:30/km
Flapping Airplanes runs in the Steady lane. Rivals on Well Run sit in their own pace lanes; further right = more momentum. Tap one to open its page.
Total raised
~$1.18Bsee rounds ↓
Headcount
~24as of Oct 2026 indexventures.com ↗
Founded
2025
HQ
San Francisco, CA

Leadership

The problem

Today's AI needs most of the internet and huge compute, making it too costly for data-scarce fields

What they do

AI research lab building far more data- and compute-efficient models and GPU megakernels

Traction No product or revenue; not commercializing yet; valuation 4x in 9 months ($1.5B → ~$6B)

Hiring trend

Open roles
0
Headcount
~23

~4 → ~23 staff since late-2025 founding (LinkedIn/Liftoff est.); no public job board

Funding

Last round
$1B
Stage
Series A
Date
Oct 2026

Led by Index Ventures, Lux Capital

Distance

Unproven

Year-old research lab of ~two dozen people with a megakernel framework and a pre-training run, but no product, customers or revenue; $1.18B raised buys time, not proof.

Sources: Index Ventures: Leading Flapping Airplanes' $1B Series A (Oct 2026) ↗ · SiliconANGLE: Flapping Airplanes raises $1B at reported $6B; no commercial product yet (Oct 2026) ↗

Open ops roles

No ops roles open right now

Last checked Oct 24, 2026

News timeline

  1. Oct 2026Raises $1B Series A co-led by Index and Lux at a reported ~$6B valuation techcrunch.com ↗
  2. Jan 2026Launches with $180M seed from GV, Sequoia and Index techcrunch.com ↗

Funding historyTotal raised ~$1.18B

  1. Jan 2026Seed$180Mat $1.5BLed by GV, Sequoia, Index Ventures techcrunch.com ↗
  2. Oct 2026Series A$1Bat ~$6BLed by Index Ventures, Lux Capital techcrunch.com ↗

Profile facts checked Oct 24, 2026. Every fact links to its public source.

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