A new legal battle is erupting over AI. Amazon has sued Perplexity, demanding the AI startup stop its Comet browser from shopping on its site. The lawsuit alleges Perplexity’s AI agent accesses customer accounts without consent, committing computer fraud and degrading the shopping experience Amazon built. Perplexity responded sharply, accusing Amazon of bullying and trying to stifle innovation that makes shopping easier for customers. This conflict exposes the high-stakes tension between established tech giants and the new wave of autonomous AI agents that act on behalf of users. As this AI browser war escalates, some competitors are embracing similar technology.