Perplexity vs ChatGPT: which is better for looking things up
Both can search the web and answer with sources, but they're built around different goals.
ChatGPT also has deep research and built-in web browsing, so this isn't "one searches and the other doesn't." The real difference is how central citing sources is to every single answer, and how versatile you want the assistant to be beyond that.
Comparison
Perplexity
AI SearchAI answer engine that searches in real time and cites its sources in every response.
- Cites the sources for every answer, something most AI chats don't do
- Gives access to several top models (GPT, Claude, etc.) from one interface
ChatGPT
AI ChatOpenAI's AI assistant for chatting, writing, researching, generating images and coding, all in one place.
- The largest, most battle-tested ecosystem on the market, with native apps on every platform
- Memory across conversations and great versatility: text, image, voice and code in a single chat
The key difference
Perplexity is built from the ground up around citing sources: every answer shows where the information came from, not just when you switch on a special "research" mode. It also lets you pick which model answers (GPT, Claude or others) from the same interface, instead of relying on just one. ChatGPT also searches the web and does deep research, but its strength is versatility: images, voice, memory across conversations and code, all in the same chat.
If you need to be able to show where a piece of information came from — for a paper, an article, or to double-check something before repeating it — Perplexity is built exactly for that. If you want a single assistant that, on top of sourced answers, can also generate an image, talk back and forth by voice, or remember a conversation from last week, ChatGPT covers more ground.
Frequently asked questions
Which one is better if I need to cite sources for my work?
Perplexity: every answer shows the sources it used, something most AI chats don't do with the same level of detail on every response.
Does ChatGPT search the web too?
Yes, it has deep research and built-in browsing — but it doesn't show sources with the same level of detail on every answer that Perplexity does, since Perplexity is built around that by design.
Which one is more versatile day to day, beyond searching?
ChatGPT: image generation, live voice, memory across conversations and code, all in one place.
Does either one let you choose which AI model answers?
Perplexity: you can choose between GPT, Claude and other models from the same interface; ChatGPT only uses OpenAI's own models.