I'm not biased, i neither like or dislike AI or any other tech.
Perplexity seems to use gpt-3 under the hood but i couldn't care less about that. What i care about is that it allows me to dig into and learn new subjects in a way that was not possible before.
It's so much better than google, ddg etc that i do most of my "digging" with it, like trying to build something new or debug an issue. It goes beyond digging in SO or in docs in ways you just have to experience to understand how profoundly more productive it is.
And I'd love to have more options. Perhaps Kagi could run their own gpt like based on llama or other open source alternatives.
To each their own, if you still want to stick with traditional search, I'm sure those will still be around