Perplexity vs ChatGPT: Which to Use for Answers You Can Check

Perplexity for questions where you need to see the source, ChatGPT for everything you would do in a conversation — writing, reading a photo, talking it through by voice. The scores are close, 7.5 and 7.7, and they split on purpose: Perplexity's core function is built around numbered citations and a research mode that asks before it searches, while ChatGPT's strength is range. The free tiers decide it for most people: three Pro Searches a day on Perplexity against a broad free assistant that now carries an advertising badge. Prices as of October 2026.

The short answer

Use Perplexity when the answer has to be checked: a fact, a figure, a product comparison, anything you will repeat to someone else. Every reply comes with numbered sources. Use ChatGPT when the job is making something — a draft, a summary of a photo, a plan talked through by voice. Most people need both, and the free tiers make that possible.

What each one is for

Perplexity is an answer engine. You ask, it searches, and the reply is assembled from pages it shows you as numbered links. Its Pro Search and Deep Research modes ask a clarifying question first, the way a careful researcher would. On our five criteria its core function scores 8.5: cited answers, eight selectable models, and a research mode that asks first.

ChatGPT is an assistant. It answers questions, reads photos you send it, generates images, writes in your voice and holds a spoken conversation. Its core function scores 9.0 — everything works from one input box. It can search the web, but search is one of its tools rather than the shape of every answer.

Price and what the free tier blocks

• Perplexity free: three Pro Searches a day; ordinary searches are not counted against them. Pro is $20 a month with a choice of eight models. Credits sit on top — Pro has no monthly credit allowance, Max costs $200, and credit packs start at $5. Its monetisation scores 6.0.
• ChatGPT free: most features with limits. Above it sit four paid tiers, from $8 a month to $200, plus separately sold usage credits. Its monetisation scores 6.5.

The free tiers are shaped differently. Perplexity's cap is on deep research — three a day — while ChatGPT's limits are spread across everything. For quick factual questions, Perplexity's free tier is effectively unlimited; for long writing sessions, ChatGPT's free tier is the more generous.

What each one collects

ChatGPT's Google Play listing carries an advertising badge, and its data card names third-party advertising; its privacy score is 5.0. Perplexity links location, identifiers and purchases to the user, offers a training opt-out, and Google Play lists third-party sharing; its privacy score is 6.5.

Neither is a private notebook. Perplexity is the less commercial of the two today, but both tie questions to your account, and both keep history unless you delete it. For questions you would not want attached to your name — health, money, legal trouble — a privacy-first assistant such as DuckDuckGo's Duck.ai, which needs no account, is the safer place to ask. Between these two, Perplexity's training opt-out is the one concrete control worth switching on.

The same question in both apps

Ask both apps which phone has the best battery life this year and the difference is plain. Perplexity searches, reads several pages and writes a short answer with a number beside every claim; tap the number and you are on the page it came from. If two sources disagree, you can see that they do. ChatGPT gives a fluent answer too, and it can search when it decides the question needs it, but the reply reads as its own view, and checking it means asking for sources and then opening them.

Now ask both to turn that answer into a message for a friend, in a casual tone, under fifty words. ChatGPT is better at that by a distance — it is a writing tool first. Perplexity can do it, but it keeps reaching back to the sources, which is the wrong instinct for a chatty text.

That is the whole comparison in two prompts. One app is built so that you can trust the facts; the other is built so that you can shape the words.

Using both without paying

The two free tiers fit together well. Perplexity's three daily Pro Searches go to the questions where being wrong would cost something — a purchase, a medical term to look up properly, a figure for work — and its ordinary searches cover the quick ones. ChatGPT's free tier handles drafting, photo questions and voice. Nothing in either free plan stops you using them side by side.

The point at which paying makes sense differs too. Perplexity's $20 Pro is worth it if you do research every day and want to pick the model. ChatGPT's cheapest paid tier starts at $8, and the jump to its higher tiers is about heavier use rather than different features. Neither needs paying for until a limit gets in your way every week.

Where Perplexity wins

• Checking facts. Numbered sources on every answer, not on request.
• Research. Deep Research asks what you mean before spending time searching, which saves a wrong answer to the wrong question.
• Model choice on Pro. Eight models under one $20 subscription.
• Fewer ads. No advertising badge on the listing.

{{app:perplexity-ai-search-chat}}## Where ChatGPT wins

• Range. Photo reading, image generation, voice conversation and writing in one place.
• Ease of use. One text field and a microphone, scored 8.5; nothing to configure.
• Long work. Drafts, rewrites and multi-step conversations are what it is built for.
• Performance. Responses stream quickly on a moderate connection; Perplexity's Android install is 371 MB against 190.8 MB on iPhone, and Play reviews mention lock-ups.

{{app:chatgpt}}## Bottom line

Choose Perplexity for answers you need to verify — the citations are the product, and three free Pro Searches a day cover most people's hard questions. Choose ChatGPT for everything conversational and creative, and read its data card first, because the advertising badge is new in 2026. If you only install one, ChatGPT covers more ground; if being right matters more than being fast, it should be Perplexity. Better still, keep both: the free tiers overlap so little that together they cost nothing and cover almost every question a phone gets asked.