AI Shopping Goes To Court: Amazon Vs. Perplexity And Online Buying
AI shopping used to sound like a polished demo for people who enjoy asking a chatbot to find socks at midnight. Now it is a real business, a real legal problem, and a real part of online shopping. AI agents could mediate $3 trillion to $5 trillion of global consumer commerce by 2030.
Amazon and Perplexity are both already building toward that future. Amazon has Rufus and its “Buy for Me” feature, while Perplexity has Comet and Instant Buy, tools designed to research products, compare options, and, in some cases, complete purchases. So when people call this case “Amazon vs. Perplexity,” they are really talking about who gets to become your AI shopping assistant in the years ahead.
Amazon sued Perplexity in November 2025, won a preliminary injunction on March 9, 2026, and then saw that order temporarily stayed by the Ninth Circuit a week later while the appeal moves forward. So, as of now, Perplexity’s shopping agent can keep operating on Amazon for the moment, but the bigger legal answer is still very much in draft form.
How Amazon Says The Trouble Started
Amazon’s complaint says Perplexity’s Comet browser and AI agent accessed password-protected Amazon customer accounts without Amazon’s permission. The company also says Perplexity disguised Comet’s activity as if it were ordinary Google Chrome browsing, which made the agent look like a human shopper instead of an automated system. In Amazon’s view, the key issue is that AI agents entering private account areas should identify themselves clearly and follow Amazon’s rules.
Amazon also argues that this was not one accidental misstep. In its complaint and cease-and-desist letter, the e-commerce giant says it had been warning Perplexity since late 2024, sent a formal cease-and-desist letter on October 31, 2025, and even put in technical barriers that Perplexity allegedly worked around with a new Comet update within 24 hours. Those are allegations, not a final judgment, but they clearly mattered when the court weighed whether Amazon had a strong early case.
What Perplexity Says The Fight Is Really Over
Perplexity has pushed back hard. The company called Amazon’s lawsuit meritless and described it as an effort to stop people from avoiding Amazon ads, while also arguing that blocking Comet on Amazon would hurt both the company and consumers. This also fits Perplexity’s broader public message: users should be free to choose the AI tools they want, even if big platforms would prefer a more obedient internet.
Perplexity’s product strategy shows that shopping is not some side quest for the company. Its Comet materials say the browser can handle shopping tasks from comparing products and reading reviews through checkout, and its Instant Buy help page says U.S. users can search for products and purchase directly on Perplexity through a supported merchant workflow.
Perplexity maintains its product cards are ranked by relevance, authority, ratings, and user preferences, and its help center says advertisers cannot pay to place products in the “related products” section.
Why Amazon’s Position Looks Slightly Awkward
Amazon’s stance would sound simpler if Amazon itself were staying away from AI shopping. It is doing the opposite. Amazon’s own pages say Rufus can answer shopping questions, find products, add items to carts, track prices, and even shop across other online stores, while the company’s fourth-quarter 2025 results said Rufus was used by more than 300 million customers and helped drive nearly $12 billion in incremental annualized sales.
Then there is “Buy for Me,” Amazon’s beta feature that lets customers buy select products from other brands’ sites without leaving the Amazon Shopping app. Amazon says the feature uses agentic AI and is being tested with a limited number of brands and products for a subset of U.S. customers.
The company’s real distinction appears to be between approved agentic commerce and unapproved agentic commerce, which is a very large distinction when you own the store. Still, the irony is hard to miss: Amazon is defending users from outside robot shoppers while building a very polished robot shopper of its own.
Why This Case Could Rewrite E-Commerce Law
Judge Maxine Chesney said Amazon had strong evidence that Perplexity accessed Amazon accounts “with the Amazon user’s permission, but without authorization by Amazon.”
For regular buyers, that means your login credentials may no longer be the whole story. You can tell an AI shopping agent to act for you, but a retailer may still argue that the agent needs its own permission, its own identification, or its own technical path, such as an approved API. If that logic survives appeal, the future of AI shopping agents may depend less on raw model intelligence and more on contracts, platform rules, and disclosure labels.
Why This Matters For Online Shoppers
For buyers, the practical effects are already easy to imagine:
- Your favorite AI shopping assistant may work smoothly on one site and hit a wall on another.
- Prices, reviews, delivery options, and bundles may depend on which system is doing the ranking.
- Customer support can get messy when the AI layer, the retailer, and the merchant each handle different parts of the order.
- Your data trail becomes longer when a browser agent, a platform, and a payment system all touch the same purchase.
What AI Shopping Agents Mean For Privacy And Security
Amazon says the privacy and security side is a serious part of the case. In its cease-and-desist letter, Amazon argued that Comet could expose customer data to risk and pointed to public reports about prompt injection, phishing, scams, and code-injection issues.
Perplexity’s answer is basically: yes, that risk is real, and that is why we built controls. Its Comet privacy FAQ says data stays on the device by default, passwords and payment details are stored locally in the operating system’s secure vault, and personal data is only sent when needed for a requested task.
The honest answer lies somewhere in the middle. Amazon is right that AI browsers create a new attack surface, and Perplexity’s own BrowseSafe research says browser agents introduce “an uncharted attack surface” where malicious web payloads can try to bend the agent away from the user’s intent. Perplexity is also right to say these systems can be designed with controls, local storage, and permission layers, because no one is going to hand a bot their checkout flow without at least pretending to read the privacy section.
What AI Shopping Means For Prices, Reviews, And Ads
Amazon says an outside agent can weaken the quality of shopping, not only the security. In its cease-and-desist letter, Amazon argued that Comet might miss the best price, the best delivery method, or important product information, and even noted that Comet did not offer the option to add products to existing deliveries, which could improve delivery times and reduce shipment volume.
Perplexity tells a different story. Its Instant Buy help page says product listings are ranked by algorithmic relevance and ratings, not sponsorship, while Reuters reported that Perplexity sees Amazon’s legal attack as partly about ad avoidance. This raises a bigger question: should online shopping be shaped mainly by the marketplace’s internal incentives, or by an external AI shopping assistant that claims to optimize for the buyer?
Two Futures For Online Shopping
One possible future is a web of platform-approved agents. In that world, Amazon’s Rufus and Buy for Me, Walmart’s chatbot partnerships, and other retailer-backed tools become the main paths to AI shopping, because they are visible, measurable, and easier for platforms to govern. A CMS legal update from March 2026 notes that Walmart is already working with OpenAI and Google Gemini, while Amazon prefers its own “Buy for Me” flow rather than outside chatbot checkout on Amazon itself.
The other future is a more open internet where independent tools like Comet act as personal agents across many sites. That sounds attractive for consumer choice, but the legal questions are still unsettled; the same CMS update says there is no explicit UK legislation addressing AI shopping agents yet and that many of the answers remain uncertain and untested.
The market will likely land somewhere in between. Big retailers will welcome AI shopping when they can see it, shape it, and sometimes profit from it, while independent assistants will keep arguing that user choice should come first. The final balance will decide whether agentic commerce feels open and portable or whether it looks more like a chain of walled gardens, each with its own helpful robot standing at the gate.
What Smart Buyers Should Do Right Now
A few practical habits can help:
- Use AI shopping agents first for low-risk purchases, not urgent orders or highly sensitive items.
- Check who fulfills the order and where customer support lives before you click buy.
- Use a password manager, unique credentials, and strong authentication for any account linked to shopping.
The Bottom Line
Amazon vs. Perplexity is one court fight, but it is also a power struggle over the next version of online shopping. Right now, the appeals court has temporarily allowed Perplexity’s Amazon shopping agent to keep running while the case continues, so nobody has final victory and nobody gets to write the history books yet. But the early rulings already tell us the main question: when an AI shopping assistant acts for you, who actually controls the transaction?
AI shopping agents will probably get faster, more useful, and more common, but they will also bring new fights over privacy, access, accountability, ads, and support. The winner may not be the company with the cleverest model or the cutest product demo; it may be the one that convinces buyers, merchants, and courts that its robot shopper can be trusted with the boring, fragile, very human business of spending money.
