{"id":371549,"date":"2026-01-15T15:14:14","date_gmt":"2026-01-15T15:14:14","guid":{"rendered":"https:\/\/www.newsbeep.com\/uk\/371549\/"},"modified":"2026-01-15T15:14:14","modified_gmt":"2026-01-15T15:14:14","slug":"two-thinking-machines-lab-cofounders-are-leaving-to-rejoin-openai","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/uk\/371549\/","title":{"rendered":"Two Thinking Machines Lab Cofounders Are Leaving to Rejoin OpenAI"},"content":{"rendered":"<p>Thinking Machines cofounders Barret Zoph and Luke Metz are leaving the fledgling AI lab and rejoining OpenAI, the ChatGPT-maker announced on Wednesday. OpenAI\u2019s CEO of applications, Fidji Simo, shared the news in a memo to staff this afternoon.<\/p>\n<p class=\"paywall\">Two narratives are already forming about what prompted the departures. The news was first reported on X by technology reporter Kylie Robison, who wrote that Zoph was fired for \u201cunethical conduct.\u201d<\/p>\n<p class=\"paywall\">A source close to Thinking Machines alleged that Zoph had shared confidential company information with competitors. WIRED was unable to verify this information with Zoph, who did not immediately respond to WIRED\u2019s request for comment.<\/p>\n<p class=\"paywall\">According to the memo from Simo, Zoph told Thinking Machines CEO Mira Murati on Monday he was considering leaving. He was then fired on Wednesday. Simo went on to write that OpenAI doesn\u2019t share the same concerns about Zoph as Murati.<\/p>\n<p class=\"paywall\">The personnel shake-up is a major win for OpenAI, which recently lost its <a href=\"https:\/\/www.wired.com\/story\/openai-amazon-operating-system-ai-apps-ads\/\" rel=\"nofollow noopener\" target=\"_blank\">VP of research, Jerry Tworek<\/a>. A third Thinking Machines staffer, Sam Schoenholz, is also rejoining OpenAI, per the company\u2019s announcement.<\/p>\n<p class=\"paywall\">The departures are a blow to Thinking Machines, <a data-offer-url=\"https:\/\/www.wsj.com\/tech\/ai\/thinking-machines-lab-co-founder-departs-for-meta-442d7461\" class=\"external-link\" data-event-click=\"{&quot;element&quot;:&quot;ExternalLink&quot;,&quot;outgoingURL&quot;:&quot;https:\/\/www.wsj.com\/tech\/ai\/thinking-machines-lab-co-founder-departs-for-meta-442d7461&quot;}\" href=\"https:\/\/www.wsj.com\/tech\/ai\/thinking-machines-lab-co-founder-departs-for-meta-442d7461\" rel=\"nofollow noopener\" target=\"_blank\">which also lost another co-founder<\/a>, Andrew Tulloch, in November when he took a new job at Meta. In a <a data-offer-url=\"https:\/\/x.com\/miramurati\/status\/2011577319295692801?s=20\" class=\"external-link\" data-event-click=\"{&quot;element&quot;:&quot;ExternalLink&quot;,&quot;outgoingURL&quot;:&quot;https:\/\/x.com\/miramurati\/status\/2011577319295692801?s=20&quot;}\" href=\"https:\/\/x.com\/miramurati\/status\/2011577319295692801?s=20\" rel=\"nofollow noopener\" target=\"_blank\">post on X<\/a>, Murati confirmed Zoph&#8217;s depature and said that Soumith Chintala will replace him as the startup\u2019s chief technology officer.<\/p>\n<p class=\"paywall\">Zoph and Metz left OpenAI in late 2024 to start Thinking Machines with Murati, the ChatGPT maker\u2019s former chief technology officer. Zoph was previously OpenAI\u2019s vice president of post-training, where he led teams that made final improvements to AI models before they were deployed into products like ChatGPT and OpenAI\u2019s API. Metz worked at OpenAI for two years during his first stint at the company and contributed to projects like ChatGPT and the o1 AI reasoning model.<\/p>\n<p class=\"paywall\">Simo told employees in her memo that Zoph will report directly to her, and Metz and Schoenholz will work under him. The hiring announcement timeline was accelerated, she said, so they still have to work out some details about their roles.<\/p>\n<p class=\"paywall\">Thinking Machines Lab is one of several well-funded AI startups led by former top OpenAI researchers, reflecting the incredible appetite among investors to cash in on the AI race. Last year, Murati\u2019s startup was last <a href=\"https:\/\/www.wired.com\/story\/thinking-machines-lab-mira-murati-funding\/\" rel=\"nofollow noopener\" target=\"_blank\">valued at $12 billion<\/a>, and was recently in talks to raise more than <a data-offer-url=\"https:\/\/www.theinformation.com\/briefings\/exclusive-muratis-thinking-machines-aims-raise-5-billion?rc=dp0mql\" class=\"external-link\" data-event-click=\"{&quot;element&quot;:&quot;ExternalLink&quot;,&quot;outgoingURL&quot;:&quot;https:\/\/www.theinformation.com\/briefings\/exclusive-muratis-thinking-machines-aims-raise-5-billion?rc=dp0mql&quot;}\" href=\"https:\/\/www.theinformation.com\/briefings\/exclusive-muratis-thinking-machines-aims-raise-5-billion?rc=dp0mql\" rel=\"nofollow noopener\" target=\"_blank\">$4 billion at a $50 billion valuation<\/a>. The startup\u2019s main product today is called Tinker, which allows developers to customize AI models on their own datasets.<\/p>\n","protected":false},"excerpt":{"rendered":"Thinking Machines cofounders Barret Zoph and Luke Metz are leaving the fledgling AI lab and rejoining OpenAI, the&hellip;\n","protected":false},"author":2,"featured_media":371550,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[554,733,4308,58766,874,10109,86,56,54,55],"class_list":["post-371549","post","type-post","status-publish","format-standard","has-post-thumbnail","category-artificial-intelligence","tag-ai","tag-artificial-intelligence","tag-artificialintelligence","tag-models","tag-openai","tag-silicon-valley","tag-technology","tag-uk","tag-united-kingdom","tag-unitedkingdom"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/posts\/371549","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/comments?post=371549"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/posts\/371549\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/media\/371550"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/media?parent=371549"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/categories?post=371549"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/tags?post=371549"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}