Amazon and Perplexity started a big battle in the field of AI browsers: what happened

Amazon believes that Agent Comet violates its terms of service, degrades the shopping experience, and creates privacy issues, writes Engadget.

Amazon.com’s Terms of Service explicitly prohibit “any downloading, copying, or other use of account information for the benefit of any third party” and “any use of data scrapers, robots, or similar tools to collect or extract data.” Perplexity’s Comet agent features can violate both of these. The browser stores user data locally and securely and uses it to complete Amazon purchases with a single command.

Perplexity and Amazon agreed to suspend agent purchases on Amazon in November 2024, but when Comet was released, Perplexity re-enabled the feature. By presenting the Comet agent as a Chrome browser user rather than a bot, the company allegedly tried to circumvent the agreement until Amazon found out and sent a cease-and-desist letter.

Perplexity could be a future competitor. In April 2025, Amazon demonstrated its own AI shopping agent called Buy for Me.

However, Perplexity also disagrees with the main points of Amazon’s argument. “User agents are exactly what they are: user agents,” Perplexity states. “They are different from crawlers, scrapers, or bots.” Therefore, Perplexity believes that Comet’s agent should not violate Amazon’s terms because it acts on behalf of users, with their permission.

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