Thinking Machines Lab Company Profile

Thinking Machines Lab is an artificial intelligence research and product company founded by former OpenAI CTO Mira Murati, alongside OpenAI alumni including John Schulman, Barret Zoph and Lilian Weng. Its flagship products are Inkling, a 975-billion-parameter open-weights large language model released in July 2026, and Tinker, an API that lets developers fine-tune open-weight models such as Qwen and Nemotron without managing distributed computing.

Founded in February 2025 and headquartered in San Francisco's Mission District, the company is structured as a public benefit corporation and employed about 100 people by 2026. Inkling was described as the largest and most powerful open-weights model released outside China at the time, exceeding Nvidia's Nemotron 3 Ultra.

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High minimums, transfer approval, company right-of-first-refusal.

Valuations, rounds and IPO status for every company in the directory — Thinking Machines Lab included.

Lead investors for each round are in the funding timeline.

The closest artificial intelligence — foundation models and fine-tuning infrastructure peers are on the competitors page.

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No. Thinking Machines Lab is a private company; its shares do not trade on a public exchange.

The last valuation is $12B.