AI firm Anthropic, a chief rival to OpenAI, announced Tuesday it has closed a massive $13 billion Series F funding round, catapulting its valuation to $183 billion. The company says the new capital will be used to fuel enterprise adoption of its Claude family of AI models, deepen its safety research, and support international expansion as it races to keep pace in the fiercely competitive artificial intelligence market.
The round, which nearly triples the company’s $61.5 billion valuation from March 2025, was co-led by Iconiq, Fidelity Management & Research Company, and Lightspeed Venture Partners. The deal follows a period of explosive growth for the AI startup, which reported its annual revenue run-rate surged from $1 billion to $5 billion over the course of 2025. In a blog post announcing the funding, Anthropic stated it now serves over 300,000 business customers, with the number of large accounts contributing over $100,000 in revenue growing nearly sevenfold in the past year.
“This financing demonstrates investors’ extraordinary confidence in our financial performance and the strength of their collaboration with us to continue fueling our unprecedented growth,” Anthropic CFO Krishna Rao said in the announcement. The funding solidifies Anthropic’s position as the world’s fourth-most valuable venture-backed startup, trailing giants like OpenAI and SpaceX. The move comes as Anthropic has also shifted its strategy to more aggressively leverage user data, recently announcing it would use conversations from its consumer AI services to train future models, a move that aligns it with competitors but intensifies debates over user privacy.
The investor syndicate also included a long list of institutional and sovereign wealth funds such as BlackRock, Blackstone, Coatue, Insight Partners, and the Qatar Investment Authority, as reported by TechCrunch. CEO Dario Amodei has previously expressed he wasn’t “thrilled” about taking money from certain sovereign wealth funds but acknowledged the immense capital requirements needed to compete at the highest level of AI development.
Sources
- TechCrunch: Anthropic raises $13B Series F at $183B valuation
- Axios: Anthropic’s valuation hits $183 billion after $13 billion raise
- Anthropic: Anthropic raises $13B Series F at $183B post-money valuation
- PitchBook: OpenAI rival Anthropic valued at $183B as part of new $13B funding round
- AInvest: Anthropic Expands Data Retention to 5 Years, Will Train Models on User Chats
