Thinking Machines Lab
Thinking Machines Lab is an American artificial intelligence research and product company based in San Francisco, California. Founded in February 2025 by Mira Murati and five other OpenAI alumni, the company operates as a public benefit corporation. Its mission is to create multimodal AI systems that collaborate with people and can be tailored for various fields. The company focuses on open science and human-AI collaboration, aiming to make AI accessible and understandable for everyone. Its first product, Tinker, launched in October 2025, is a managed fine-tuning platform that helps developer
Investing activity
Thinking Machines Lab appears in 1 AI deal tracked by the AI Lounge deals desk, rounds totalling $25M, and led 1 of them. The rounds are mostly Seed, with a median round size of $25M. The most recent is Mantic (Seed, $25M, Sep 2026).
Thinking Machines Lab most often invests alongside Radical Ventures and Balderton Capital, and the companies it backs on AI Lounge are mostly in AI.
Deals
Frequently asked questions about Thinking Machines Lab
What AI companies has Thinking Machines Lab invested in?
Thinking Machines Lab's AI investments include Mantic. The 1 round on AI Lounge are listed on this page with amounts, dates and co-investors.
Where is Thinking Machines Lab based?
Thinking Machines Lab is based in San Francisco, California, United States.
What stage does Thinking Machines Lab invest at?
In the rounds tracked on AI Lounge, Thinking Machines Lab has invested at Seed, with a median round of $25M. Thinking Machines Lab led 1 of those rounds.
Who does Thinking Machines Lab co-invest with?
Thinking Machines Lab's most frequent co-investors on AI Lounge are Radical Ventures (1 deal) and Balderton Capital (1 deal).
How can founders reach Thinking Machines Lab?
Founders on AI Lounge can see Thinking Machines Lab's contact details in AI Investor Contacts (paid plans), check for a warm introduction through members who worked with the firm under Warm Paths, and add Thinking Machines Lab to their Investor Pipeline to track the conversation.