Pricing Organized by API Calls

These details are provided for developers and programmers

Transactions Class A
Costs: Free
b2_delete_bucket
unlimited number free
b2_delete_file_version
unlimited number free
b2_hide_file
unlimited number free
b2_get_upload_url
unlimited number free
b2_upload_file
unlimited number free
b2_start_large_file
unlimited number free
b2_get_upload_part_url
unlimited number free
b2_upload_part
unlimited number free
b2_cancel_large_file
unlimited number free
b2_finish_large_file
unlimited number free

Note: An unlimited number of b2_upload_file calls are free, and B2 does not charge any money for the bandwidth used on upload. But after being uploaded, data stored inside B2 incurs cost. The first 10 GBytes are free, then the amount over 10 GBytes is $0.005/GByte/month.

Transactions Class B
Cost: The first 2,500 of these calls are free each day, then
b2_download_file_by_id
$0.004 per 10,000
b2_download_file_by_name
$0.004 per 10,000
b2_get_file_info
$0.004 per 10,000

Note: In addition to the cost of each API call, there isa cost of downloading data specific to b2_download_file_by_id and b2_download_file_by_name. The first 1 GByte downloaded each day is free, then the amount over 1 GByte costs $0.05/GByte. Each day starts at 00:00 UTC.

Transactions Class C
Cost: The first 2,500 of these calls are free each day, then
b2_authorize_account
$0.004 per 1,000
b2_create_bucket
$0.004 per 1,000
b2_list_buckets
$0.004 per 1,000
b2_list_file_names
$0.004 per 1,000
b2_list_file_versions
$0.004 per 1,000
b2_update_bucket
$0.004 per 1,000
b2_list_parts
$0.004 per 1,000
b2_list_unfinished_large_files
$0.004 per 1,000
b2_get_download_authorization
$0.004 per 1,000