Amazon Sues Perplexity
“Perplexity’s misconduct must end,” Amazon declared in a federal lawsuit filed in San Francisco this week, accusing the AI startup Perplexity of illegally using its artificial intelligence shopping assistant to act on behalf of real customers without proper disclosure. The case centers on Perplexity’s new AI agent, known as Comet, which can browse, compare, and even purchase items on e-commerce sites like Amazon.
Amazon’s Allegations
Amazon claims that Comet violated its terms of service and the Computer Fraud and Abuse Act by disguising itself as a human shopper. According to court filings, the AI tool allegedly “covertly accessed private Amazon customer accounts” and continued automated activity even after Amazon’s systems attempted to block it. The company says this behavior constitutes unauthorized access and poses risks to both user privacy and site integrity. In the complaint, Amazon argues that Comet’s actions interfere with its internal algorithms, distort sales data, and degrade the overall customer experience. The retail giant maintains that its terms explicitly ban bots, scraping tools, or automated services that interact with Amazon’s platform without permission or identification.
Perplexity’s Response
Perplexity has strongly denied the allegations, calling the lawsuit an overreach by Amazon to stifle innovation and competition. In a public statement, the startup said that Comet operates transparently and only acts at the direction of its users. “Amazon wants to block you from using your own AI assistant to shop on their platform,” Perplexity wrote in a blog post titled “Bullying is Not Innovation.” The company insists that user credentials are stored locally and that the AI is not operating independently or scraping data. Instead, it frames Comet as a digital tool that simplifies shopping by helping users navigate and compare options more efficiently.
Why the Case Matters
This lawsuit could become one of the first major tests of agentic AI—software capable of taking autonomous actions on behalf of human users. Comet’s ability to mimic human browsing behavior raises crucial questions about where the legal line falls between automation and impersonation. For Amazon, the issue is about protecting its platform’s integrity. For Perplexity, it’s about defending user agency in the age of intelligent automation. The ruling could influence how e-commerce platforms regulate AI-driven tools, determining whether they’re treated as legitimate user proxies or as bots requiring explicit permission to operate.
The Bigger Picture
Beyond the courtroom, the dispute highlights a growing power struggle between major tech platforms and AI startups. Amazon’s aggressive stance reflects its desire to control how shoppers interact with its site, while companies like Perplexity seek to empower consumers with smarter, faster digital assistants. The implications stretch far beyond retail. If Amazon succeeds, it could lead to tighter restrictions across the web for AI assistants that act independently on users’ behalf. If Perplexity wins, it could open the door to a new era of AI-powered consumer automation — one that changes how people shop, search, and spend online.
What Comes Next
Amazon is asking the court to bar Perplexity from allowing Comet to make purchases or interact with its website in any automated way. Hearings in the Northern District of California are expected to begin in the coming weeks, where more technical evidence may emerge about how Comet functions behind the scenes. Regardless of the outcome, this case marks a pivotal moment for the evolving relationship between artificial intelligence and e-commerce. The verdict could determine whether AI shopping tools are the next big step in consumer tech or a line that platforms like Amazon refuse to cross.
