Thinking Machines Lab

An API called Tinker for fine-tuning open-weight language models, plus Inkling, the company's own open-weights model. It also publishes AI research and runs research grant programs.

Artificial intelligenceFrontier AI models and model fine-tuning platformSan Francisco, United States
FoundersSince 2025
Valuation
$12B
Total raised
$2.0B
Last round · Mar 2026
Strategic investment
Founded
2025
Employees
100
Quarters in VP50
3

In VP50

  1. Q4 2023: no place
  2. Q1 2024: no place
  3. Q2 2024: no place
  4. Q3 2024: no place
  5. Q4 2024: no place
  6. Q1 2025: no place
  7. Q2 2025: no place
  8. Q3 2025: #41
  9. Q4 2025: #44
  10. Q1 2026: #49
  11. Q2 2026: no place
  12. Q3 2026: no place
  13. Q4 2026: no place

Place by quarter since Q4 2023. Best place #41.

Funding rounds

DateRound · leadRaisedValuation
Mar 10, 2026Strategic investment · NVIDIA——
Jul 15, 2025Seed · Andreessen Horowitz$2.0B$12B

Signals

Team

Thinking Machines Lab | Venture Place