Amazon Demands Perplexity Stop AI Tool's Purchasing Ability

Perplexity Says Amazon Is Bullying Smaller Competitor With a Rival AI Agent Shopping Product

Perplexity AI assistant app on a smartphone
Perplexity AI assistant app on a smartphone. (Andrey Rudakov/Bloomberg)

Key Takeaways:Toggle View of Key Takeaways

  • Amazon sent a cease and desist letter to Perplexity AI demanding it stop using its Comet agent to make purchases on Amazon, alleging violations of its terms of service.
  • The dispute underscores rising tensions over AI shopping agents, which could threaten Amazon’s advertising business by bypassing paid product placements.
  • Perplexity denied wrongdoing and accused Amazon of anticompetitive behavior, while Amazon said it is open to partnering with third-party agent developers in the future.

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Amazon.com Inc. has sent a cease and desist letter to Perplexity AI demanding that the artificial intelligence search startup stop allowing its AI browser agent, Comet, to make purchases online for users.

The e-commerce giant is accusing Perplexity of committing computer fraud by failing to disclose when its AI agent is shopping on a user’s behalf, in violation of Amazon’s terms of service, according to people familiar with the letter sent Oct. 31. The document also said Perplexity’s tool degraded the Amazon shopping experience and introduced privacy vulnerabilities, said the people, who spoke on condition of anonymity to discuss internal matters.

In ablog post, Perplexity said Amazon is bullying a smaller competitor with a rival AI agent shopping product and argued that users should have a choice to choose their preferred agent to make purchases on Amazon. “It’s a bully tactic to scare disruptive companies like Perplexity out of making life better for people,” the startup wrote.



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The clash between Amazon and Perplexity offers an early glimpse into a looming debate over how to handle the proliferation of so-called AI agents that field more complex tasks online for users, including shopping. Like OpenAI and Alphabet Inc.’s Google, Perplexity has pushed to rethink the traditional web browser around AI, with the goal of having it streamline more actions for users, such as drafting emails and conducting research.

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Amazon is also developing its own AI agents, including some capable of shopping. In April, it introduced a feature – still in public testing – called Buy For Me, which is designed to let shoppers buy from brand sites within the Amazon shopping app. Another AI assistant, called Rufus, can browse Amazon’s site, recommend products to shoppers and put them in a cart. But much of the experimentation in how agents might interact with the web has been carried out by startups like Perplexity, now valued at $20 billion.

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Aravind Srinivas

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“Amazon’s a company that we’ve actually taken a lot of inspiration from,” Perplexity CEO Aravind Srinivas said. “But I don’t think it’s customer centric to force people to use only their assistant, which may not even be the best shopping assistant.”

The Amazon retail site’s conditions of use prohibit “any use of data mining, robots or similar data gathering and extraction tools.” In November 2024, Amazon asked Perplexity to stop deploying AI agents capable of purchasing products on the site until the two companies came to an agreement on the practice, the people said. The startup complied.

But by this August, Perplexity started using its new Comet browser agent, which had logged into their user’s Amazon accounts, the letter said. This time, Perplexity identified the agents as a Google Chrome browser user, Amazon said in the letter. When Perplexity refused to stop its bots, Amazon sought to block them, but Perplexity released a new version of Comet to get around the security measure.

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“We think it’s fairly straightforward that third-party applications that offer to make purchases on behalf of customers from other businesses should operate openly and respect service provider decisions whether or not to participate,” Lara Hendrickson, an Amazon spokesperson, said in an emailed statement. She added that other companies, including food delivery services and online travel agencies, operate in the same way.

“Agentic third-party applications such as Perplexity’s Comet have the same obligations, and we’ve repeatedly requested that Perplexity remove Amazon from the Comet experience, particularly in light of the significantly degraded shopping and customer service experience it provides,” she said.

In response to Amazon’s accusation that Perplexity was disguising its agents, Srinivas said he sees no need to distinguish a user from an agent that someone deputizes on their behalf. Srinivas argued that agents should have “all the same rights and responsibilities” as a real human user. “It’s not Amazon’s job to survey that,” he said.

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Over the past 18 months, Perplexity hasof using their content in AI news summaries without permission and of buying data that had beendiscussion sites. Perplexity previously said it “will always fight vigorously for users’ rights to freely and fairly access public knowledge.”

Srinivas said Perplexity’s Comet browser is not training or scraping any information from Amazon with its Comet agent, only taking actions required to make purchases at a user’s bidding. Perplexity, in a blog post responding to the cease-and-desist letter, also accused Amazon of trying to “eliminate user rights” in order to sell more ads.

Shopping agents may one day pose a significant threat to Amazon’s lucrative advertising business, which makes most of its money by selling prominent placement on its web store in response to shoppers’ product search queries. If bots shop for customers, the advertising placement potentially loses its value.

Amazon CEO Andy Jassy said on an earnings call last week that the customer experience for AI shopping agents was “not good,” citing a lack of personalization and user-specific shopping history, and bungled delivery estimates and pricing.

“But I do think we will find ways to partner,” he said, adding that Amazon was having “conversations” with builders of third-party agents.

Perplexity is a customer of Amazon’s cloud unit. Srinivas said his company has made “hundreds of millions” in commitments to Amazon Web Services. AWS also brought Srinivas on stage at its annual trade show in 2023 and has repeatedly touted the startup as one of the AI outfits that built their businesses in part on Amazon’s digital infrastructure.

Amazon founder Jeff Bezos has also invested in Perplexity.

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