AI Infrastructure · Reviewed June 1, 2026

Thinking Machines Lab

Frontier AI lab founded by ex-OpenAI CTO Mira Murati. $2B seed at $12B valuation, in talks for $50-60B. Building useful and safe AI.

Pricing
Freemium
Rating
4.93/ 5 · 214 reviews
Last reviewed
June 1, 2026
Channels
Thinking Machines Lab ai infrastructure tool screenshot
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Overview

Thinking Machines Lab: Mira Murati's Frontier AI Research Lab

Thinking Machines Lab is Founded by Mira Murati (former OpenAI CTO). Mira Murati was OpenAI's CTO during the GPT-4 launch and ChatGPT explosion. The team she's assembled is one of the most pedigreed in AI. The historic $2B seed reflects investor conviction that frontier-lab capability is still a winner-take-most market.

Key Features

  • Founded by Mira Murati (former OpenAI CTO)
  • $2B seed round at $12B valuation — among largest in history
  • In talks to quadruple to $50–60B valuation
  • Team includes ex-OpenAI senior researchers
  • Building frontier AI with focus on usefulness and safety

Ideal Use Case

Researchers, enterprise AI buyers, and developers tracking the frontier-lab tier — Thinking Machines is among the four most-watched AI labs alongside OpenAI, Anthropic, and Google DeepMind.

Why Use Thinking Machines Lab

Mira Murati was OpenAI's CTO during the GPT-4 launch and ChatGPT explosion. The team she's assembled is one of the most pedigreed in AI. The historic $2B seed reflects investor conviction that frontier-lab capability is still a winner-take-most market.

FAQ

What does Thinking Machines Lab do? Thinking Machines Lab is an AI lab focused on building useful and safe artificial intelligence systems. Founded by Mira Murati, former CTO of OpenAI, the lab develops AI infrastructure, models, and agents for various applications.

Who should use Thinking Machines Lab? Thinking Machines Lab is designed for developers, researchers, and organizations looking to leverage frontier AI technology for their projects. It's suitable for teams building AI-powered applications and those interested in working with cutting-edge AI infrastructure.

How much does Thinking Machines Lab cost? Thinking Machines Lab operates on a freemium model, allowing users to get started at no cost. For detailed pricing information and to explore available plans, visit the Thinking Machines Lab pricing page.

How does Thinking Machines Lab compare to similar AI tools? Thinking Machines Lab competes in the frontier AI space alongside alternatives like Grok, fal.ai, and Vercel AI SDK, each offering different approaches to AI infrastructure and model access. Your choice depends on your specific needs around safety, infrastructure preferences, and integration requirements.

tl;dr

Frontier AI lab. Mira Murati. $12B valuation, $50B+ in talks. Among the most-watched labs of 2026.

Related

Looking for more options? Browse the AI Infrastructure directory or read our best AI infrastructure tools listicle. Thinking Machines Lab has a Wikipedia entry and is tracked on Crunchbase.

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Why Use Thinking Machines Lab

Rating
4.93
Across 214 verified reviews
Saved
462
By ToolDirectory readers
Pricing
Freemium
Publisher-listed pricing model
Listed
Since 2026
Continuously re-reviewed by editors
Category
AI Infrastructure
Primary listing
Verified by editors during the most recent review · ToolDirectory.AI
Thinking Machines Lab ai infrastructure tool screenshot
03

Editorial Review

Editorial review
Verdict: Hold · 3.5/5

Our take on Thinking Machines Lab.

Sydney Weiss
Reviewed by Sydney Weiss · Senior AI Reviewer · Last checked 2026-05-22
Early-stage AI lab with serious backing and leadership, but the actual product surface is still unclear.

What works

  • Credible leadership and well-funded backing
  • Freemium model lowers barrier to early access
  • Strong community sentiment around the team's vision

What doesn't

  • Actual product capabilities and usage remain vague
  • Too early-stage to meaningfully compare against alternatives

Thinking Machines Lab carries real pedigree—Mira Murati's move from OpenAI CTO signals serious intent in the frontier AI space. The lab is well-funded and positioned to take long-term bets on safety and capability. That said, there's a gap between the organization's profile and what's actually available to use right now. The freemium model suggests they're building something public-facing, but the details on what you can access, what it does, and how it compares to existing alternatives (Grok, fal.ai, Vercel's SDK) aren't yet clear enough to evaluate the actual experience. Community rating is strong, which hints at believers, but 462 likes suggests the tool hasn't yet achieved broad adoption or visibility.

If you're tracking frontier labs and want to follow where Murati's team is headed, this is worth keeping an eye on. But if you need something to ship with today, you'll likely look elsewhere until the product story becomes more concrete.

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User Reviews

4.93
Out of 5 · 214 ratings
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