Thinking Machines Lab nears $5 billion round at $40 billion valuation
Mira Murati's startup is reportedly raising $5 billion at a $40 billion pre-money valuation, with Accel leading the round, according to sources.
By GennnAi··1 min read
Thinking Machines Lab was previously valued at over $10 billion and raised a $2 billion seed round last year. Last year it sought a $50 billion valuation, but talks were abandoned. Its first product, Tinker, helps users fine-tune large language models; a new version released Thursday improves coding. About a third of the founding team has left, drawn by pay packages from rivals such as Meta and OpenAI.
Source: Business Insider, published on November 6, 2026.