A list of blue links lets the reader choose which account to open. An answer engine makes that decision once before the reader gets there. Aravind Srinivas built Perplexity around that exchange. Its citations can make research faster, but the order of the sources, the passages the system leaves out and the model used to assemble them all shape what the reader takes away.
Perplexity AI, Inc. · United States
Perplexity combines retrieval, ranking, language models and a customer interface. It can change what a reader sees even when another company supplied the underlying model. Its infrastructure relationship with AWS is documented in an AWS case study. That account describes a supplier relationship and should be read with the supplier’s commercial interest in mind. AWS infrastructure case study.
Capital and voting rights. The company is privately held. Srinivas publicly discussed 2028 as a target for an IPO. A target gives neither a tradable security nor a reservation of future shares. The company and university sources cited here establish his executive role but do not disclose his current voting stake, a separate board chairmanship or the founders’ original paid-in capital. Reuters on the CEO’s IPO timetable.
What happened to Sonar?
Perplexity’s developer documentation records the retirement of its Sonar Chat Completions interface on 27 September 2026 and directs customers to the Agent API. Developers choose supported models and tools there. The change illustrates why an answer engine deserves a profile of its own. A service can govern distribution, select the underlying suppliers and change the interface on which customers depend. Perplexity migration documentation.
What the citation lets a reader check
Suppose an answer says a city approved a construction project. The footnote may lead to a notice that the city merely scheduled a hearing. The link makes that difference discoverable. It does not resolve it. An editor evaluating this kind of search can ask three separate questions: does the cited document exist, does it support the sentence, and did the answer omit a later decision?
When an agent shops on someone else’s site
Amazon’s dispute with Perplexity put a concrete question to a court: what authority does an automated agent have to act on a customer’s behalf on another company’s service? On 4 August 2026 the US Court of Appeals for the Ninth Circuit vacated a preliminary injunction and remanded the case. The procedural decision should not be read as a final judgment on every claim or as general permission for any agent to use any website. Ninth Circuit opinion.
Information checked on 15 November 2026. Ownership figures and proposed transactions refer to the dates in the linked records.
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