SAN FRANCISCO, CALIFORNIA / Content Syndication Services / — Anthropic has raised $65 billion in Series H funding at a $965 billion post-money valuation, making the Claude developer the most valuable private artificial intelligence company by reported valuation. The financing round places Anthropic ahead of OpenAI’s most recent disclosed private valuation and marks one of the largest capital raises in the technology sector. The company announced the transaction on May 28, saying the round was led by Altimeter Capital, Dragoneer, Greenoaks and Sequoia Capital.
The new valuation represents a steep increase from Anthropic’s February funding round, when the company was valued at $380 billion after raising $30 billion. Anthropic said its annualized revenue run rate crossed $47 billion earlier in May, compared with $14 billion around the time of its prior funding. The San Francisco company said demand has grown across global enterprise customers using Claude, its family of generative AI models and assistants for workplace, coding, research and business applications.
The Series H round included $15 billion in previously committed investments from hyperscale technology partners, including $5 billion from Amazon. Anthropic also named Micron, Samsung and SK hynix among strategic infrastructure investors tied to the round. The company said the financing is connected to expansion of compute capacity, product deployment and continued work on AI safety and interpretability, areas it has identified as central to its business since its founding in 2021.
Valuation surge reshapes private AI rankings
Anthropic’s latest financing gives the company a post-money valuation above OpenAI’s previously disclosed valuation of $852 billion from a March funding round. The comparison makes Anthropic the highest-valued private AI company based on confirmed funding data. Both companies operate leading generative AI platforms used by consumers, developers and enterprise customers, with Anthropic’s Claude competing in a market that also includes models and AI services from Google, Meta, Microsoft and other large technology groups.
The funding comes as private AI companies require large amounts of capital for model training, inference, cloud services, data center access and specialized chips. Anthropic has built partnerships across cloud and semiconductor supply chains, including arrangements involving Amazon, Google, Broadcom, CoreWeave and major memory producers. The company’s products include Claude for general AI assistance, coding tools and enterprise features designed for business use, with customers using the platform for software development, document analysis, customer support and internal workflow automation.
Claude adoption drives funding narrative
Anthropic said its revenue growth was supported by broader enterprise adoption and rising usage of Claude. The company has released successive model updates focused on coding, agentic workflows and professional tasks, including Claude Opus 4.8 in late May. It has also expanded internationally, with recent announcements covering offices and leadership appointments in Europe and Asia. Those developments provide a broader operating backdrop for the funding round, though the valuation remains tied to private financing rather than public market trading.
The transaction underscores the scale of investor demand for companies developing frontier AI systems, while also highlighting the capital intensity of the sector. Anthropic remains privately held, and the $965 billion figure is a post-money valuation from the Series H round rather than a public market capitalization. The company’s announced investors, enterprise revenue figures and infrastructure partnerships place the funding among the most significant confirmed private technology financings to date, with Anthropic now ranked at the top of private AI company valuations.