Hi Community, Would like to ask for advice from people familiar with those tools. We are a small self-funded startup and initial cost for us is very important at that stage. That's why we are leaning towards Sanity. The CMS will be used to power our website and flutter cross-platform mobile applications.
Former Prismic.io developer here. If you want something robust vs "looks good from a distance," I would recommend Contentful. They are the biggest for a reason. Their CMS handles a lot of use cases and has great documentation. Prismic.io will work well in simple blog-esque use cases. Their more complex features break easily and their documentation is confusing. It has fallen quite a distance behind Contentful. Sanity appears to be a much newer CMS and you might come to regret the lack of features, but I've only briefly reviewed their product.