Hi here is a standard official answer~haha
The basic SDK (including positioning SDK, map SDK, navigation SDK, eagle eye SDK, etc.) and JavaScript API are free, and the WebAPI service exceeds Free quotas need to be purchased. For details, please refer to the quotation page link on the official website.
If the following usage scenarios are met: "Using this service for commercial purposes and/or obtaining income directly or indirectly through this service must obtain special written permission from Baidu in advance." You need to obtain commercial authorization from Baidu Maps , authorization is required to be charged, specific fees and commercial authorization application channels → web link