Anthropic, a competitor to OpenAI founded by former OpenAI executives, has raised $1.3 billion in its Series F funding round, bringing its post-money valuation to $18.3 billion. The funding was led by growth equity firm ICONIQ Capital, with participation from Fidelity and Lightspeed Venture Partners. Additional notable investors joining the round include Altimeter, Baillie Gifford, funds affiliated with BlackRock, Singapore’s GIC, Goldman Sachs’ growth fund, Qatar’s sovereign wealth fund, the Ontario Teachers’ Pension Plan, and TPG.
This latest investment marks one of the largest funding rounds ever recorded in the AI industry. With its updated valuation, Anthropic now ranks as the fourth most valuable startup globally, following OpenAI, SpaceX, and ByteDance. The company plans to use the new capital to advance AI safety research, expand its platform internationally, and accelerate the development of next-generation AI models.
Established in 2021, Anthropic previously raised $3.5 billion in its last funding round led by Lightspeed Venture Partners in March 2025, at which time its valuation stood at $6.15 billion. Back then, the company’s annualized revenue run rate was approximately $1 billion. By August 2025, however, that figure had surged to $5 billion, indicating rising demand for its AI models. This rapid growth has positioned Anthropic more competitively against other major players in the AI space, including OpenAI.
Anthropic’s Claude chatbot is widely adopted by companies due to its advanced coding and problem-solving capabilities. Unlike OpenAI, which focuses more on consumer-facing products, Anthropic targets enterprise clients by offering AI models as a service, with backing from tech giants such as Amazon and Google. Early projections suggest that the company could achieve revenues of up to $34.5 billion by 2027.
“Anthropic currently serves over 300,000 business customers, and the number of enterprise clients — each generating over $100,000 in annualized revenue — has grown nearly sevenfold over the past year. Additionally, since its full launch in May 2025, developers have increasingly adopted Claude Code as their preferred tool. Claude Code has rapidly gained traction, already generating over $500 million in annualized revenue, with usage increasing more than tenfold within just three months,” the company stated.
Despite these strong performance indicators, Anthropic remains unprofitable. Like other AI firms, it faces significant costs related to computing power, data processing, and attracting top research talent. The company also faces internal challenges and legal disputes. In June 2025, Reddit filed a lawsuit against Anthropic, accusing it of using Reddit content to train its AI models without permission. Similarly, in August 2024, authors Andrea Bartz, Charles Graeber, and Kirk Wallace Johnson initiated a class-action lawsuit against the company, alleging that their copyrighted books were used to train the Claude AI without proper compensation.
