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Amazon Sues Perplexity, Acknowledging the Existential Threat of Autonomous Agent Sprawl

The Security Digest - News Team
Published
November 6, 2025

Amazon sues AI startup Perplexity to block its Comet shopping agent, escalating a legal battle over how AI agents can operate online.

Credit: Outlever

Key Points

  • Amazon sues AI startup Perplexity to block its Comet shopping agent, escalating a legal battle over how AI agents can operate online.
  • The lawsuit highlights a conflict over Amazon's $56 billion advertising business, which is threatened by AI agents that can bypass sponsored product listings.
  • Perplexity accuses Amazon of "litigious bullying" to protect its ad revenue, arguing its AI agent is simply an extension of the user.
  • The legal challenge comes as Google deploys its own AI agents and Perplexity faces a separate lawsuit from Reddit over its agent's behavior.

Amazon is suing Perplexity, demanding the AI startup stop its Comet browser from making purchases on its site, as reported by CNBC. The lawsuit escalates a public battle that could set the rules for how AI agents operate on the web.

  • Bully pulpit: Perplexity fired back in a blog post, accusing the tech giant of "litigious bullying" to protect its lucrative advertising business. The startup’s position is that its AI agent is merely an extension of the user, and Amazon is more interested in serving ads than helping customers.

  • Deception and degradation: Amazon claims Perplexity is using "disguised or obscured" agents to gain unauthorized access. The e-commerce giant argues the tool provides a "degraded shopping experience" by bypassing its personalized recommendations and has repeatedly asked the startup to stop.

  • The $56 billion question: This fight isn't just about user experience; it's about control. As reported by Semafor, Amazon's ad business generated $56 billion last year, a revenue stream threatened by third-party agents that bypass its sponsored listings. Amazon is also developing its own AI shopping assistant, Rufus, signaling it wants to own the AI experience on its platform.

The lawsuit, Amazon.com Services LLC v. Perplexity AI, Inc., marks a major test for agentic AI, pitting a user's right to automate tasks against a platform's right to control its own ecosystem.