Thinking Machines Lab, the artificial intelligence startup founded by former OpenAI executive Mira Murati, today announced it has raised approximately $2 billion in a funding round valuing the company at $12 billion. The round was led by venture capital firm Andreessen Horowitz, with participation from Nvidia, Accel, ServiceNow, Cisco, AMD, and Jane Street.

The substantial investment comes just months after the company’s launch in February, underscoring both Murati’s track record as a leader in generative AI and investors’ continued appetite for cutting-edge AI startups. Thinking Machines aims to build AI systems that are safer, more reliable, and applicable to a broader range of use cases than existing offerings.

“We’re excited that in the next couple of months we will be able to share our first product, which will include a significant open source component and be useful for researchers and startups developing custom models,” said Mira Murati, CEO of Thinking Machines.

The company’s founding team is composed largely of former OpenAI employees, reflecting a broader trend of high-profile talent departing major AI labs to pursue new ventures. Other former OpenAI leaders, including Dario Amodei (Anthropic) and Ilya Sutskever (Safe Superintelligence), have also recently raised multi-billion-dollar funding rounds.

Investor enthusiasm for AI remains robust. U.S. startup funding rose nearly 76% to $162.8 billion in the first half of 2025, with AI companies accounting for over 64% of total deal value, according to PitchBook data.

Thinking Machines plans to use the new capital to expand its research and engineering teams and accelerate development of its core AI platform.