Yes, the rates vary by platform. In the US, there's a combo of statutory (or CRB-approved) rates on the publisher side, and negotiations on the label side.
On the publisher/songwriter side, streams are not "public performances" under the Copyright Act (in the US), so royalties are not handled by the court-sanctioned monopolies that have been in place since the early 20th century (ASCAP, BMI).
On the publisher/songwriter side, streams are not "public performances" under the Copyright Act (in the US), so royalties are not handled by the court-sanctioned monopolies that have been in place since the early 20th century (ASCAP, BMI).