Anthropic PBC has decided against acquiring artificial intelligence startup Decart AI, people familiar with the matter said.Anthropic had been exploring a deal and performed due diligence on Decart, but ultimately walked away, according to the people, who asked not to be identified discussing private information. The companies may still pursue other opportunities to collaborate, one of the people said. Representatives for Anthropic and Decart declined to comment. The Claude chatbot maker had been in talks to buy Decart for about $6 billion, though nothing had been finalized and there was a possibility the negotiations could fall apart, Bloomberg News reported in August. Decart produces software that can reduce the cost of training and operating AI by helping chips work more efficiently. The idea of the mooted acquisition had been to help Anthropic’s existing computing infrastructure absorb more demand. Anthropic, which rarely makes large acquisitions, has been spending on computing power to develop new products and serve customers ahead of its highly anticipated initial public offering. The company has been seeking to raise as much as SpaceX or more in its listing, people familiar with the preparations have said. Decart was founded in 2023 by three Israeli engineers, brothers Dean and Orian Leitersdorf and Moshe Shalev. Among other services, the startup offers an optimization stack meant to help AI developers “squeeze every ounce of performance from every chip,” according to its website. That includes using chips to train AI models and running them after they’ve been trained, a process known as inference. The company also makes so-called world models, which aim to simulate the physical world. Decart’s world models are intended to help businesses in a range of applications including autonomous driving and e-commerce. Its Lucy AI model can take in live video of a person and use it to generate a real-time, high-resolution video that makes it look like the person is actually trying on a dress or a bag — a task that long bedeviled fashion e-commerce tech developers. E-commerce platform eBay Inc., an investor in the company, is also a Decart customer.The startup said in May it raised $300 million in a funding round led by Radical Ventures, with Nvidia Corp., Atreides Management, Valor Equity Partners and Adobe Ventures joining. Prior investors Sequoia Capital, Benchmark and Zeev Ventures also participated. The round valued Decart at almost $4 billion, The Wall Street Journal reported, up from $3.1 billion in August 2025.During an interview on stage with Bloomberg at the Raise AI conference in Paris in July, Dean Leitersdorf — who is chief executive officer — said the company trains its AI on text and millions of hours of video to get a grasp of simulating real-world properties of physics. He said Decart’s technology is being used for live streaming on online platforms like Twitch, TikTok and YouTube by influencers such as CodeMiko, as well as by advertising companies and others.More stories like this are available on bloomberg.comPublished on September 8, 2026