Anthropic has raised $65 billion in a Series H funding round that values the artificial intelligence company at $965 billion post-money, marking one of the largest private financings in the sector to date. The round is led by Altimeter Capital, Dragoneer, Greenoaks and Sequoia Capital, alongside a broad group of global institutional investors and existing backers.
The company said adoption of its Claude AI models has accelerated across global enterprises since its previous Series G round in February, with run-rate revenue surpassing $47 billion earlier in May. Anthropic added that both large organizations and individual professionals are increasingly using Claude in their day-to-day work and core operations.
Anthropic plans to deploy the new capital to advance safety and interpretability research, expand compute capacity to meet demand for Claude, and scale its products and partnerships. The company highlighted ongoing development of tools such as Claude Code and Claude Cowork, which it aims to make more powerful and adaptable for a growing customer base.
The investor group for the Series H is broad-based. The round was co-led by Capital Group, Coatue, D1 Capital Partners, GIC, ICONIQ and XN. Significant investors include AMP PBC, Baillie Gifford, Blackstone, Brookfield, D.E. Shaw Ventures, DST Global, Fidelity Management & Research Company, General Catalyst, Insight Partners, Jane Street, Lightspeed Venture Partners, MGX, NTTVC, NX1 Capital, Situational Awareness LP, T. Rowe Price entities and Temasek. The total also incorporates $15 billion of previously committed investments from hyperscalers, including $5 billion from Amazon.
Anthropic has also deepened ties with key infrastructure partners as it scales compute. Micron, Samsung and SK hynix are described as strategic partners whose memory, storage and logic technologies underpin the company’s ability to meet growing demand for Claude. Anthropic said these relationships will support reliable compute expansion as usage increases.
The company reported it has “significantly expanded” compute capacity in recent weeks through a series of large-scale agreements. These include up to five gigawatts of new capacity with Amazon, five gigawatts of next-generation TPU capacity with Google and Broadcom, and access to GPU capacity in SpaceX’s Colossus 1 and Colossus 2. Anthropic noted that Claude is now the first frontier model available across Amazon Web Services, Google Cloud and Microsoft Azure, with AWS remaining its primary cloud provider and training partner.
Lead investors framed the deal as backing both Anthropic’s technology and its organizational focus. Altimeter Capital founder and CEO Brad Gerstner said Claude’s recent advancements have driven adoption among “the world’s most demanding organizations” and position the company to lead the next phase of AI innovation. Dragoneer managing partner Marc Stad described Anthropic as helping to “pull forward” a future in which intelligence is central to how businesses operate and how products are delivered.
Greenoaks founder Neil Mehta said Anthropic’s culture, mission and commercial momentum reinforce one another, calling the company’s work “the most important” many of its employees will do. Sequoia Capital partner Alfred Lin said both startups and large corporates are using Claude to handle complex workflows, allowing the model to learn how businesses operate and positioning Anthropic as a bridge between current and future enterprise AI capabilities.
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