(Reuters) -Amazon ( AMZN ) is in talks for its second multi-billion dollar investment in artificial intelligence startup Anthropic, the Information reported on Thursday, citing a person familiar with the matter.

The cloud services giant announced an investment of $4 billion in the OpenAI rival in September last year, saying its customers would gain early access to Anthropic's technology.

Amazon ( AMZN ) has asked Anthropic, which uses Amazon's ( AMZN ) cloud services to train its AI model, to use a large number of servers powered by chips developed by the cloud computing major, the report said.

It added that the AI startup prefers to use Amazon ( AMZN ) servers powered by Nvidia-designed AI chips.

Amazon ( AMZN ) did not immediately respond to a Reuters request for comment, while Anthropic declined comment.

Anthropic, which was co-founded by former OpenAI executives and siblings Dario and Daniela Amodei, last year said it had secured a $500 million investment from Google-parent Alphabet, which promised to invest another $1.5 billion over time.