But Mapbox is much more than cute basemaps. Webservice capabilities like routing and geocoding, accessible by API, are also available. Are datasets, such as boundaries, traffic, movement, what you need for your project? Well, there is also an API for that! Get an access token and start using them.
If you've been working with Mapbox's basemaps only, go a step further and take advantage of the other tools it offers in the mapping domain - you can give them a try for free!