Apple Maps is cheap - 250000 views per day are for free.
You will have to create your own client JWTs afaik. Not sure about APIs.
To this day still covered by the free tier whereas on Google it went overnight from free to $300+/month.
I can’t quite recall if you need to be registered as an Apple Developer to use it (probably).
Rereading OP I realise the question was about APIs rather than necessarily web-based mapping (which is how I initially had read it)