Anthropic has secured $13 billion in a new Series F funding round led by Amazon, according to people familiar with the deal. The investment lifts the artificial intelligence company’s post-money valuation to $183 billion, underscoring continued investor appetite for top-tier AI developers.

The latest round marks one of the largest private fundraisings in the sector and reflects the intense competition among major cloud and technology companies to back the most advanced model builders. Amazon, already a major strategic partner to Anthropic, is deepening its exposure to a company that has become a key contender in the race to commercialize AI systems.

The deal also highlights how quickly valuations in the AI industry have surged as companies seek more capital to train larger models, expand infrastructure, and compete for enterprise customers. For investors, the size of the round suggests confidence that demand for generative AI tools remains strong despite a crowded market.

Anthropic has positioned itself as a leading developer of frontier AI systems, with a focus on safety and enterprise use cases. The new financing gives the company additional resources to expand its product line and scale operations as competition intensifies across the AI ecosystem.