I see that many companies are starting to actively use AI, but it's difficult to understand which models are really useful and which are just a fad. Does anyone know of any good resources that explain this in an accessible way?

I came across an excellent article onhttps://weelorum.com/blog/fintech-mobile-application-development-features-challenges-and-cost/ , which explains in detail and in simple language what modern models such as Gemini Pro and ChatGPT-4 are capable of. It shows how they cope with tasks of varying complexity — from content generation to big data analysis — and how their approaches differ. It's very convenient that everything is broken down into examples, so you can immediately see where AI really helps. If you want to quickly understand the capabilities of these tools, this is an excellent resource.