U.S. AI startup Anthropic is in talks to raise $2 billion in a deal that would value it at $60 billion, more than triple its valuation a year ago, according to the Wall Street Journal.

The round is being led by venture capital firm Lightspeed Venture Partners, and the $60 billion valuation includes the money Anthropic plans to raise in the round, people familiar with the matter said.

The deal will make Anthropic the fifth most valuable U.S. startup after SpaceX, OpenAI, Stripe and Databricks, according to data provider CB Insights.

Anthropic was valued at $18 billion in a funding round led by Menlo Ventures last year.