Anthropic has closed an $8 billion Series F funding round, according to people familiar with the deal, pushing the artificial-intelligence company’s valuation to $150 billion after the investment. The round underscores continued investor appetite for leading AI firms despite rising scrutiny over costs, competition and long-term profitability.

The company, known for its Claude chatbot, has quickly become one of the most closely watched players in the generative AI market. The new financing gives Anthropic fresh capital to expand its models, infrastructure and enterprise offerings as it competes with rivals backed by deep-pocketed investors and major tech firms.

The size of the round places Anthropic among the world’s most valuable private technology companies. It also highlights how far investor enthusiasm has carried the AI sector, where valuations have surged even as companies face pressure to prove durable revenue growth and responsible deployment.

Reuters reported the deal based on sources familiar with the transaction. Anthropic has not disclosed a full public breakdown of the financing terms, but the new funding is likely to intensify debate over whether the AI boom can translate into sustainable business returns.