Mira Murati’s Thinking Machines Lab Raises $2B Seed at $12B Valuation
Thinking Machines Lab, the AI startup founded by former OpenAI CTO Mira Murati, closed an approximately $2 billion seed funding round led by venture firm Andreessen Horowitz that values the company at roughly $12 billion. The July 2025 round drew participation from strategic investors including Nvidia, Accel, ServiceNow, Cisco and AMD, among others. Launched in February 2025, Thinking Machines has recruited multiple former OpenAI researchers and says it aims to build multimodal, customizable AI systems with an emphasis on safety and researcher access. The company has no public revenue and remains early-stage, but the size and composition of its backers underline strong investor appetite for new AI labs and grant Murati substantial resources to pursue frontier-model development and product launches.
Key Takeaways
- Raised about $2 billion in a seed round led by Andreessen Horowitz
- Post-money valuation reported near $12 billion
- Participants included Nvidia, Accel, ServiceNow, Cisco and AMD
- Founded Feb 2025; recruited many ex-OpenAI researchers
- No disclosed revenue or public product at time of round
Sources
The Biggest Seed Round in AI History?
Crunchbase News
Mira Murati's AI startup Thinking Machines raises $2 billion in a16z-led round
Reuters
Former OpenAI CTO Mira Murati Raises $2 Billion for New Thinking Machines Lab
The Wall Street Journal