I use ChatGPT the most. My top use cases are for generating a list of ideas (travel activities, character names, meal options, blog ideas, etc. etc.) and also for turning bullet points or outlines into narratives. It’s great at generating text.
But Perplexity I’ve grown to love. For all cases when I used to search for “How does x work?” or “What is y?”, I now use Perplexity instead of a search engine. It’s amazing.