Thinking Machines Lab's website preview

Well Run profileThe Chase Pack · #345 of 720

Position 345

Thinking Machines Lab

Frontier AI lab shipping open-weight models (Inkling) and the Tinker fine-tuning platform

Pace
4:40/kmTempo3.5
Distance
Distance 10K.
Open ops roles
4
Last week
#290
Move
▼ 55
Peak
#290
Weeks in the 100
0
The Chart →
Rank and score over time
Board rank
#280#312#343#290Oct 18#333Oct 25
Pace score
02463.5Oct 183.5Oct 25

One point per Sunday re-rank, tracking since Oct 18. The lines fill in week by week.

Thinking Machines Lab runs in the Tempo lane (4:40/km): 145 of 166. Further right = more momentum. No competitors on the board yet, so it runs alone.
Total raised
~$2B (seed; a reported ~$1B Accel-led round was in talks as of Sep 2026, not confirmed)see rounds ↓
Founded
2025
HQ
San Francisco, CA

Leadership

The problem

Companies want models they can customize on their own data instead of one closed general chatbot

What they do

Frontier AI lab shipping open-weight models (Inkling) and the Tinker fine-tuning platform

Traction Revenue run rate over $100M (TechCrunch source, Sep 2026)

Hiring trend

Open roles
52
Ops roles
4
Headcount
~200

Headcount ~30 (Feb 2025) to ~200 (mid-2026); 55 open roles

Hiring in

  • San Francisco
  • New York
  • Washington, DC

Funding

Last round
$2B
Stage
Seed (record)
Date
Jul 2025

Led by a16z

Distance

10K · edge: cheaper at size

$100M+ run rate, but far behind the top labs and 4 of 6 co-founders have left.

Sources: The Next Web: Thinking Machines in talks to raise $6bn (Sep 2026) ↗

Watch-outs

Co-founder exodus: 4 of 6 co-founders gone (Tulloch to Meta; Zoph, Metz to OpenAI; Weng)

Sources: Startup Fortune, Jul 2026 ↗ · Business Insider, May 2026 ↗

Last checked Oct 25, 2026

Funding historyTotal raised ~$2B (seed; a reported ~$1B Accel-led round was in talks as of Sep 2026, not confirmed)

  1. Jul 2025Seed~$2Bat $12BLed by Andreessen Horowitz wired.com ↗

Profile facts checked Oct 19, 2026. Every fact links to its public source.

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