# Thinking Machines Lab Targets $40B Valuation in Series A

> AI startup Thinking Machines Lab aims for $40 billion valuation in $1 billion Series A round.
- Title: Thinking Machines Lab Targets $40B Valuation in Series A
- Summary: AI startup Thinking Machines Lab aims for $40 billion valuation in $1 billion Series A round.
- Keywords: thinking machines lab, series a, mira murati, openai, nvidia, ai models, tinker platform, Dealroom
- Source: Dealroom — https://dealroom.co/news/148714-thinking-machines-lab-in-talks-for-1b-series-a-at-40b-valuation
- Published: 2026-09-03T20:52:23+00:00
- Read time: 1 min
- Topics: thinking machines lab, series a, mira murati, openai, nvidia, ai models, tinker platform, startups, business
## What's the deal?
Thinking Machines Lab, the AI developer led by former OpenAI chief technology officer Mira Murati, is in talks to raise $1 billion in a Series A round at a $40 billion pre-investment valuation.
## How big is this?
The round sits in the 99th percentile by amount among all-time Series A deals in its sector and country, making it among the largest early-stage rounds on record.
## Why now?
The round follows Inkling's release and comes six months after Nvidia said it was making a significant investment and planned a long-term strategic partnership.
## Key takeaway

Thinking Machines Lab, led by ex-OpenAI CTO Mira Murati, is in talks for a $1 billion Series A at $40 billion pre-investment valuation.