Anthropic’s rapid revenue growth is driving one of the largest private technology funding rounds on record, as the AI startup lines up fresh capital at a valuation of about $350bn, Bloomberg reports.

The company’s revenue run rate topped $9bn at the end of 2025, more than doubling from roughly $4bn last summer, according to people familiar with the matter. That growth has helped attract more than $10bn of new investment commitments.

Coatue Management and Singapore’s sovereign wealth fund GIC are expected to lead the financing, each contributing around $1.5bn. Iconiq Capital is also set to invest $1bn or more, with Lightspeed Venture Partners, Menlo Ventures, and Sequoia Capital joining the round.

Combined with $15bn of prior commitments from Microsoft and Nvidia, the total capital raised could exceed $20bn. Anthropic has said it plans to deploy significant funding into AI infrastructure and has already committed $50bn to building data centres in the US.

The company’s AI assistant Claude has gained traction among enterprises and developers, particularly following the launch of a new model capable of extended autonomous coding.

The deal underscores the scale of capital required to compete at the frontier of artificial intelligence, even as investors debate the sustainability of valuations amid surging infrastructure costs.

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