The Series E deal comes less than two months after the company raised $1 billion from Google LLC. Two months before that, Amazon.com Inc. doubled its investment in Anthropic to $8 billion. Amazon Web Services became the artificial intelligence provider’s primary cloud provider last September.

Anthropic said Monday it raised $3.5 billion in its latest funding round, giving the Amazon- and Google-backed AI startup a $61.5 billion post-money valuation. Lightspeed Venture Partners led the funding round,

Anthropic on Monday announced it has raised $3.5 billion in a funding round that valued the artificial intelligence startup at $61.5 billion. Amazon has invested a total of $8 billion in Anthropic, while Google-parent Alphabet has invested $2 billion in the startup.