Anthropic Abandons $6 Billion Acquisition of AI Startup Decart Ahead of Planned IPO

In corporate offices across 2 continents this week, a proposed $6.0 billion consolidation of artificial intelligence infrastructure quietly dissolved. Anthropic, the developer behind the Claude large language model, formally ended its pursuit of Israeli AI optimization startup Decart following a period of due diligence. The decision halts what would have been Anthropic's number-1 largest acquisition to date, pivoting the company's capital strategy as it approaches the public markets.[1][3]

The transaction, first explored in August 2026, aimed to bring Decart's chip-efficiency software in-house. Founded in 2023 by a team of exactly 3 engineers, Decart specializes in optimization stacks designed to reduce the computational costs of training and operating massive AI models. For an AI developer spending heavily on cloud computing, the strategic logic of acquiring the underlying efficiency layer was clear.[3][5]

The breakdown of the $6.0 billion transaction occurs just 4 to 6 weeks before Anthropic's anticipated initial public offering, which market observers expect to launch as early as mid-October 2026. The company is reportedly seeking to raise capital on a massive scale, positioning itself to fund the immense computing power required for next-generation AI development without the immediate burden of integrating a multi-billion-dollar acquisition.[1][3]

Representatives for Anthropic and Decart declined to comment on the decision, and 0 executives from either firm have issued public statements regarding the termination of the talks. The specific findings of the due diligence process remain undisclosed, leaving it unclear whether the hurdle was valuation, technical integration, or regulatory caution ahead of the IPO.[3]

Despite walking away from the 100 percent buyout, the 2 companies are reportedly exploring alternative forms of collaboration that do not involve a full change of ownership. This leaves open the possibility of a commercial partnership where Anthropic licenses Decart's technology rather than absorbing its corporate structure.[3]

The strategic logic behind the initial talks centered on the fundamental economics of generative AI. Anthropic spends billions on hardware to train its Claude models. Decart's software is engineered to extract maximum performance from existing graphics processing units, directly addressing the industry's most pressing bottleneck.[2][5]

By acquiring Decart, Anthropic sought to internalize technology that could structurally lower its operating expenses. However, integrating a highly valued, 3-year-old startup while simultaneously preparing the regulatory and financial groundwork for a Q4 2026 public listing presents complex execution risks that management ultimately chose to avoid.[3][5]

The broader AI infrastructure market continues to see heavy capital flows despite this canceled deal. Anthropic itself recently secured a separate $35.0 billion cloud-computing agreement with Nvidia-backed Lambda, signaling that its appetite for computing capacity remains unsatisfied even as it passes on the Decart acquisition.[3]

For Decart, remaining independent means its 3 founders will continue operating in a market where optimization software is highly sought after by multiple foundation model developers. The startup retains its independent status as it navigates the next phase of the AI hardware cycle, free to sell its efficiency solutions to Anthropic's competitors.[5]