Same agent, same prompt, same files. Only the storage connector changed. Lower is better.
Provider
Cost per task, list rates
Fastio
$3.06
Box
$3.76
Dropbox
$4.29
Google Drive
$3.75
OneDrive
$4.83
These are results from one multi-document audit run per provider on 9 September 2026, using a synthetic corpus. They are not a general performance guarantee. Model costs use list rates. Fastio ran first and wrote the shared prompt prefix to cache; the other providers benefited from that cached prefix. Read the limitations or download the source data.
