Amazon has escalated its legal battle against AI startup Perplexity by suing the company, claiming its Comet AI browser is unlawfully accessing Amazon customer accounts. The lawsuit, filed in the Northern District of California, follows Amazon's prior cease-and-desist request for Perplexity to stop using its AI agents to shop on Amazon's platform. Amazon argues that Perplexity is violating its terms of service and engaging in computer fraud by not disclosing when the AI makes purchases on behalf of users. The complaint highlights concerns over the degraded shopping experience and potential loss of advertising revenue for Amazon, as customers may buy products without visiting its site. In response, Perplexity has criticized Amazon's legal actions as an attempt to stifle innovation, arguing that easier shopping benefits consumers and increases transactions. They claim Amazon is more focused on ad revenue than improving customer experience. Despite these assertions, there are risks associated with AI-driven shopping. Instances of prompt injection attacks could lead to unintended purchases, a challenge even acknowledged by OpenAI regarding its own AI tools. Perplexity did not address these issues directly in its statements. The contrast between Amazon’s response and Walmart’s approach is notable. Walmart recently partnered with OpenAI, allowing customers to shop directly through ChatGPT, which it dubbed "agentic commerce." This move highlights differing strategies within the retail sector regarding AI’s role in shopping. Overall, this conflict underscores the tension between established tech giants and emerging AI companies as they navigate the evolving landscape of online shopping.