After testing both tools, I found that MagicSlides is a complete presentation creation platform, where you just need to write or paste text, and everything will be done automatically.
It supports more content sources and produces presentations that generally require less manual editing. For users who create presentations regularly, the additional features can save more time and effort.
SlidesAI is also a good option for users who want a simple tool to turn a topic or text into a presentation quickly. It is easy to use and has a minimum of features, but best for those who want a simple presentation.
Still, the choice is yours; you can try any of them for free and understand which tool best fits your needs.