Anthropic raises $13B Series F at $183B valuation

Summary

Anthropic has completed a $13 billion Series F led by ICONIQ and co-led by Fidelity Management & Research Company and Lightspeed Venture Partners, valuing the company at $183 billion post-money. The financing follows rapid expansion since Claude launched in March 2023: run-rate revenue rose from approximately $1 billion at the beginning of 2025 to more than $5 billion by August, while Anthropic reported over 300,000 business customers and nearly sevenfold growth in large accounts over the past year. Claude Code, fully launched in May 2025, had already surpassed $500 million in run-rate revenue, with usage increasing more than 10x in three months. Anthropic says it will use the investment to expand enterprise capacity, deepen safety research, and support international expansion while building reliable, interpretable, and steerable AI systems.

Takeaways

1. 1

   Anthropic reports more than 300,000 business customers, with accounts generating over $100,000 in run-rate revenue growing nearly sevenfold in the past year.

2. 2

   Claude Code generated more than $500 million in run-rate revenue, while usage grew over 10x in the three months following its full launch in May 2025.

3. 3

   Anthropic’s platform serves businesses through APIs and industry-specific products, developers through Claude Code, and individual users through Pro and Max plans.