The New Default
Siri has been the default voice assistant on Apple devices for over a decade, so embedded in everyday life that millions of users trigger it without thinking. But a growing number of iPhone owners are now actively bypassing it, setting Perplexity’s AI assistant app as their default instead. That shift, made possible by iOS 18.2’s expanded default app settings, has created a real opening for a startup that, until recently, was mostly known among AI power users and tech enthusiasts.
Perplexity, the AI-powered answer engine, has been positioning itself less as a search tool and more as a conversational assistant that actually does things. Its push into the default assistant slot on iOS is not a gimmick. It is a direct play for the most contested piece of real estate in consumer tech: the moment someone asks their phone a question.
What Perplexity Does Differently
The core frustration with Siri has never really been about volume control or timer-setting. It has been about Siri’s persistent failure to answer complex, open-ended questions with anything resembling depth. Ask Siri to explain a legal concept, summarize a news story, or compare two products, and the response typically falls flat or redirects to a browser. Perplexity, by contrast, generates a direct answer with cited sources, making it feel less like a voice interface and more like a research partner you can actually talk to.
The app’s design has evolved to handle the kinds of tasks users actually want from a phone assistant. Perplexity can run multi-step queries, follow conversational threads, and pull real-time information from the web without making the user do additional searching. That capability gap between Siri and what modern AI can do has never been more visible than it is right now, and Perplexity is exploiting it clearly and deliberately.
Apple has been publicly working on an upgraded Siri powered by its Apple Intelligence framework, which includes deeper integration with large language models. But the rollout has been slow. Features announced at WWDC have arrived in pieces, and the version of Siri that most people are actually using today still struggles with the kind of nuanced, contextual conversation that Perplexity handles without friction. For users who upgraded their devices expecting a smarter assistant and got incremental improvements, patience is running thin.
Perplexity has also made a calculated move on distribution. The company reportedly struck a deal to pre-install its app on certain Android devices, and the iOS default setting option gives it a similar foothold on Apple’s platform without needing Apple’s blessing. That kind of distribution strategy, going around the gatekeepers by taking advantage of regulatory pressure to open up default settings, is exactly how challengers have historically broken into locked ecosystems.
Who Is Actually Switching
The users making the switch are not exclusively the AI-obsessed early adopter crowd. There is a practical, pragmatic segment of iPhone users who want their phone to answer questions faster and better, and they are not particularly loyal to Siri. They are loyal to whatever works. Perplexity’s app has a consumer-facing design that does not feel like a developer tool, and that has lowered the barrier considerably.
The demographic most likely to switch is also the demographic that uses voice and on-screen assistants most heavily: people who multitask, people who use their phones for research or work queries, and people who spend a lot of time commuting or otherwise hands-free. For that group, the quality of an answer matters more than brand familiarity, and Perplexity is consistently winning on quality.
What This Means for Apple
Apple built its ecosystem on the idea that its hardware and software are inseparable. Siri was supposed to be the intelligent layer that tied everything together, from HomeKit to Calendar to Messages. Perplexity cannot replicate deep system integration – it cannot set an alarm, send a text, or unlock your door – and that limitation is real. But the question worth asking is how many people actually want their AI assistant for those tasks versus wanting it to answer questions intelligently. The answer is not as obvious as Apple’s product strategy assumes.
Apple has historically been slow to cede any ground on its own platform to third-party competitors. The fact that iOS 18.2 allows alternative default assistants at all is partly the result of regulatory pressure in the EU and a broader trend of forced platform openness. Apple did not open that door enthusiastically. But now that it is open, Perplexity walked through it immediately, and other AI companies are watching closely.
The competitive pressure this creates for Apple is not existential, but it is uncomfortable. If users begin to associate their iPhone’s conversational intelligence with Perplexity rather than Siri, Apple loses something harder to quantify than market share: it loses the sense that its devices are smart. That perception matters in a premium hardware market where the brand promise is built partly on the idea that the product just works, and works well. Every time a user switches their default assistant, that promise takes a small but measurable hit.
Perplexity’s revenue model, which is built around a subscription tier with expanded features, also gives it an incentive to keep users engaged and satisfied in ways that a bundled system assistant does not. Siri does not need to retain you. Perplexity does. That difference in business pressure often produces a difference in product quality that compounds over time, and Apple has not yet shown it is moving fast enough to close the gap before the habit of reaching for a better alternative becomes permanent.
