The e-commerce giant sent a nasty cease-and-desist letter to Perplexity, accusing it of "computer fraud" in violation of its policies.

The dispute stirs debate about how much freedom autonomous AI tools should have online and whether big tech platforms are tightening control to protect their own ecosystems.

Investing.com -- Amazon.com Inc has reportedly ssued a cease-and-desist letter to Perplexity AI Inc, demanding the artificial intelligence search startup discontinue its AI browser agent called Comet from making online purchases for users.

Perplexity Finance currently allows users to track American politicians' trading activities and holdings. A similar system to bring about greater financial transparency in India is slated to be launched soon,

Perplexity Patents, the AI company's latest tool, aims to not only democratize but also speed up that process. Released Thursday, the AI-powered database uses natural language to help researchers find the patents they're looking for.