Same agent, same prompt, same files. Only the storage connector changed. Lower is better.
Provider
Cost per task, list rates
Fastio
$10.14
Box
$23.76
Dropbox
$54.48
Google Drive
$45.83
OneDrive
$27.63
These are results from a contract renewal review across 2,163 files, three runs per provider, median of three, run 13 to 15 September 2026 on 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.
