I use the AI search engine Perplexity for technical matter searches but nothing else. I have tried several and they are locked in to data bases that tend to reflect the same answers. And they are typically not programmed to learn from interaction with inquirers, any new information is rejected to maintain uncorrupted data. In other works, they’re not advanced, though with the progress in AI they readily could be.
So I input this query into Perplexity: “Was the Pfizer Covid vaccine safe?” Here is the answer: “The Pfizer COVID-19 vaccine has been shown to be safe and effective. Extensive data from clinical trials and real-world use support its safety profile.” There’s more of course but you get the idea. Try it yourself and also other AI search vehicles.