Why is my S3 bill so high?
High S3 bills usually come from storage that never expires, the wrong storage class, many small requests, or data transfer out.
- Storage that has grown without lifecycle rules.
- Versioning keeping old object versions.
- Frequent requests (PUT/GET/LIST) at scale.
- Data transfer out to the internet or other regions.
- Incomplete multipart uploads.
Reference: Amazon S3 pricing, checked 2026-10-27.
Try it on your own bill
CloudCostAI reads a billing export file (AWS Cost and Usage Report, GCP billing export or Azure usage CSV) and returns findings with fix steps. It needs no access to your cloud account. Free: one report a month. Pro $29/month, Team $99/month, or a one-time audit for $179 (current plans, checked 2026-10-27).
Findings are estimates from billing lines, not utilisation metrics. Check each one against usage and service needs before changing anything.