Amazon Wins Injunction Against Perplexity Over Comet Browser Access

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Amazon just won an early courtroom round against Perplexity. A federal judge granted an injunction tied to Perplexity’s Comet browser, handing Amazon a significant legal win in a fight over how AI shopping agents interact with its site, CNBC first reported.

The ruling puts immediate pressure on one of Perplexity’s most ambitious consumer bets. At the center is Comet, the company’s AI-powered browser push, now facing a judge-ordered halt that hints at broader consequences without giving away the full scope of what comes next.

The standoff returns with a court order attached

The clash itself is not new. Amazon sued Perplexity in November, accusing the startup of trying to “conceal” its AI agents as Comet moved through the retailer’s site.

The dispute has now moved into a more consequential phase. The judge’s order focuses on Comet’s alleged use of agentic AI to reach password-protected parts of Amazon’s website, pushing a browser fight into a direct legal battle over access.

What convinced the judge to side with Amazon

Judge Maxine Chesney said Amazon had presented “strong evidence” that Comet entered users’ password-protected Amazon accounts with the user’s permission but without Amazon’s authorization, pulled private account information in the process, and…