Since always. For clarity, they are using the commercial offering from backblaze, not backblaze's personal/home use product. B2 is similar to s3, and B2 charge

Since always. For clarity, they are using the commercial offering from backblaze, not backblaze's personal/home use product. B2 is similar to s3, and B2 charges for api calls + egress. Ingress is free, and they have a generous free daily api calling limit that covers some of the core api