Yes, Perplexity AI can be used for both writing and brainstorming, and many people find it helpful for getting started when they are stuck or need a fresh angle. It can assist with generating ideas, outlining articles, drafting emails, improving clarity, summarizing notes, and exploring different ways to phrase something. For brainstorming, it can be especially useful because it can quickly produce multiple directions, examples, or variations that you can then refine.
For writing, it works best as a support tool rather than a complete replacement for your own judgment and voice. The strongest results usually come when you give it a clear goal, a bit of context, and a specific style or audience. For example, asking for a professional tone, a short summary, or several headline options will usually produce more useful output than a vague request.
It is also wise to review anything it generates for accuracy, originality, and fit. AI can help accelerate the process, but the final responsibility for the content remains with the user. If you are checking how it is intended to be used, the current page usually has the most up to date details about features and availability.