(Reuters) -Perplexity AI said on Tuesday it has received a legal threat from Amazon.com demanding that the startup block the AI agent on its Comet browser from shopping on the ecommerce giant's platform on a user's behalf. The startup, which has grown rapidly amid the boom in AI assistants, rejected Amazon's claims, saying it was using its market dominance to stifle competition. Perplexity called the move a broader threat to user choice and the future of AI assistants. "Bullying is when large corporations use legal threats and intimidation to block innovation and make life worse for people," the company wrote in a blog post. Amazon did not immediately respond to a Reuters request for comment. The clash between Amazon.com and Perplexity highlights an emerging debate over how to regulate the

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