Mira Murati’s Thinking Machines Lab Loses Two Co‑Founders to OpenAI

Thinking Machines Lab Loses Co‑Founders Barrett Zoph and Luke Metz to OpenAI

In a rapid shake‑up, Mira Murati’s AI startup Thinking Machines Lab announced that co‑founders Barrett Zoph (former CTO) and Luke Metz have departed to re‑join OpenAI. The move comes just months after the company secured a $2 billion seed round, raising questions about talent retention and strategic direction in the fast‑moving AI ecosystem.

Quick Overview of the Departures

On January 14, 2026, Murati posted on X that the firm had “parted ways with Barrett Zoph,” naming Soumith Chintala as the new CTO. Within an hour, OpenAI’s applications lead, Fidji Simo, confirmed that Zoph, along with fellow co‑founder Luke Metz, would be returning to OpenAI. Both executives previously held senior research roles at OpenAI, making their return a notable talent migration.

Thinking Machines Lab: Vision, Funding, and Early Momentum

Founded in early 2025 by former OpenAI CTO Mira Murati, Barrett Zoph, and Luke Metz, Thinking Machines Lab set out to build “general‑purpose AI systems that can be safely deployed at scale.” The startup quickly attracted heavyweight investors, closing a $2 billion seed round in July 2025. The round was led by UBOS homepage, with participation from Andreessen Horowitz, Accel, Nvidia, AMD, and Jane Street, valuing the company at $12 billion.

The capital infusion enabled the launch of several flagship products, including a AI marketing agents suite and a robust UBOS platform overview that promises low‑code AI integration for enterprises.

Beyond funding, the lab’s early hires featured a blend of ex‑OpenAI, Meta, and Mistral AI researchers, positioning it as a “talent powerhouse” in the AI startup landscape.

Barrett Zoph and Luke Metz: From OpenAI to Thinking Machines and Back

Barrett Zoph served as CTO of Thinking Machines Lab after a distinguished tenure at OpenAI, where he was Vice President of Research. Prior to OpenAI, Zoph spent six years at Google as a research scientist, contributing to large‑scale language model training pipelines.

Luke Metz co‑founded the lab alongside Zoph and Murati, bringing deep expertise in reinforcement learning and multimodal AI. Metz previously led OpenAI’s robotics and alignment teams, and his return is expected to bolster OpenAI’s push into next‑generation foundation models.

Both executives announced their moves via X, with OpenAI’s Fidji Simo stating, “Excited to welcome Barrett Zoph, Luke Metz, and Sam Schoenholz back to OpenAI! This has been in the works for several weeks, and we’re thrilled to have them join the team.” Their departures were not accompanied by detailed public statements from Thinking Machines Lab, suggesting a strategic, possibly confidential, transition.

Public Statements and Industry Reactions

“We have parted ways with Barrett Zoph,” Murati wrote on X. “Soumith Chintala will be the new CTO of Thinking Machines. He is a brilliant and seasoned leader who has made important contributions to the AI field for over a decade, and he’s been a major contributor to our team. We could not be more excited to have him take on this new responsibility.”

OpenAI’s announcement highlighted the strategic value of the returning talent, emphasizing their “years of experience building safe, scalable AI systems.” Industry analysts, such as those at TechCrunch, note that the split “was not entirely amicable,” hinting at possible cultural or strategic misalignments.

What This Means for the AI Startup Landscape

The simultaneous loss of two co‑founders—one of whom was the CTO—poses immediate operational challenges for Thinking Machines Lab. However, the rapid appointment of Soumith Chintala, a veteran of Facebook AI Research, may mitigate disruption.

• Talent Retention Risks: High‑profile AI talent is increasingly fluid, with major players like OpenAI and Google competing for the same pool.
• Investor Confidence: While the $2 billion seed round demonstrates strong backing, investors will watch closely for execution risk after leadership changes.
• Product Roadmap Impact: Ongoing projects—such as the AI SEO Analyzer and the AI Article Copywriter—may experience timeline shifts.
• Competitive Dynamics: OpenAI’s reacquisition of Zoph and Metz could accelerate its own roadmap, potentially widening the gap between established labs and newer entrants.

For startups, the episode underscores the importance of building resilient governance structures that can survive founder turnover. It also highlights the value of diversified talent pipelines, something platforms like the Workflow automation studio aim to support by enabling rapid onboarding of AI engineers through low‑code workflows.

Read the Full Story

For a comprehensive account, see the original reporting by TechCrunch: Mira Murati’s startup, Thinking Machines Lab, is losing two co‑founders to OpenAI.

Explore Related UBOS Resources

Understanding how AI startups can leverage robust platforms is essential. Below are curated UBOS resources that align with the challenges highlighted above:

• About UBOS – Learn how our mission supports AI innovation.
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• AI SEO Analyzer – Optimize content for search engines using AI.
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• AI Video Generator – Create video content from text prompts.
• AI Chatbot template – Deploy conversational agents quickly.
• GPT-Powered Telegram Bot – Integrate ChatGPT with Telegram for real‑time interactions.

Conclusion

The departure of Barrett Zoph and Luke Metz underscores the fluid nature of talent in the AI sector, especially among companies backed by massive capital. While Thinking Machines Lab retains a strong financial foundation and a pipeline of innovative products, its ability to sustain momentum will hinge on how quickly the new leadership can integrate and execute. For investors and AI enthusiasts, the episode serves as a reminder to monitor not just funding rounds but also the human capital that drives breakthrough research.

Stay informed on AI industry shifts and discover tools that can help your organization adapt by exploring UBOS’s suite of AI solutions.