Perplexity AI vs ChatGPT: Which AI Search Tool Is Actually Worth It in 2026? Perplexity AI is the so-called “Google killer” that always cites its sources. ChatGPT is the AI that seems to do everything. But when you actually need to get work done, which one delivers? And is the $20/month Pro tier worth it for either? We ran both tools through real research, writing, and coding workflows to give you a clear answer instead of a hedged one. ...