Short verdict: Perplexity is built for research — every answer comes with its sources, and Pro is only $10/month for students. ChatGPT is a general assistant that writes, codes and makes images, and can search the web too. If your work is research and citing, pick Perplexity; if it's producing and writing, pick ChatGPT.
Choose Perplexity if
- You need clear sources for every claim (research, reports, journalism).
- You're a student or teacher: Education Pro at $10/month instead of $20.
- You want fast answers as a replacement for classic search.
Choose ChatGPT if
- You need writing and drafting more than searching.
- You want images, voice, file analysis and coding in one tool.
- You want a plan under $20: Go at $8.
Do I need both?
Usually not. Perplexity's free plan is generous for basic search, so you can pay for ChatGPT Plus and use Perplexity free for research — or the other way round if research is your main job.