New Delhi, April 21 -- Amazon Inc shares saw renewed buying interest on Tuesday, 21 April, rising 3% to the day's high of $255 after the company announced plans to invest up to $25 billion in Anthropic as part of an expanded agreement to build AI infrastructure.

This investment builds on the $8 billion it has already committed to the artificial intelligence startup in recent years, which could bring Amazon's total potential investment to about $33 billion.

The Seattle-based company will invest $5 billion immediately, with an additional $20 billion to follow, subject to certain commercial milestones. In return, Anthropic plans to spend over $100 billion over the next decade on Amazon's cloud infrastructure.

The deal underscores that thi...