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Anthropic raised $65 billion in Series H funding at a $965 billion post-money valuation, the company said Thursday, making it the most valuable artificial intelligence startup in the world and surpassing rival OpenAI.

The round was led by Altimeter Capital, Dragoneer, Greenoaks, and Sequoia Capital, with co-leads including Capital Group, Coatue, D1 Capital Partners, GIC, ICONIQ, and XN. The raise also includes $15 billion of previously committed investments from hyperscalers, among them $5 billion from Amazon $AMZN +0.10%. February's $380 billion valuation has now been eclipsed by a factor of nearly two and a half, according to The New York Times.

Earlier this month, Anthropic's annualized revenue run rate surpassed $47 billion — a figure the company had already revised upward from a $30 billion rate disclosed weeks prior, putting it roughly five times ahead of last year's annual pace. The company said a large portion of that growth has been driven by its AI coding tools, including Claude Code.

"This funding will help us serve the historic demand we are experiencing, stay at the research frontier, and bring Claude to more of the places where work happens," said Krishna Rao, Anthropic's CFO, in a statement.