Amazon DynamoDB (dynamodb)
- Free allowance
- 25 GB storage, 25 read capacity units and 25 write capacity units, per region per payer account, always free
- Verdict
- caveatusable, with a named limit or an unprobed read path
- Cost
- free tierpaid plans from USD 0.25/TB-month
- Identity
- cardcard required, no phone
- Binding limit
- per-ip-shaping25 read capacity units and 25 write capacity units, equal to 25 strongly-consistent 4 KB reads a second and 25 1 KB writes a second
- Evidence
- documented2 sources; a first-party page was read and the sentence quoted
- Freshness
- stale on 2026-11-23checked 2026-10-23 (live); stale on 2026-11-23
| Free tier | 25 GB storage, 25 read capacity units and 25 write capacity units, per region per payer account, always free unit GB; metered on request-count |
|---|---|
| Price | USD 0.25/GB-month beyond 25 GB |
| Limits |
2.5 million Streams read requests a month are also included |
| Identity | card an AWS account requires a payment instrument |
| Egress | transfer out is billed; the free tier does not include a transfer allowance for DynamoDB |
| Per-object cap | 400 KB per item, which is the DynamoDB engine limit (409600 bytes) |
| Retention | data persists while the table exists; no inactivity pause and no expiry clock is published, and the AWS Free Tier page lists DynamoDB under the allowances available on both the 12-month and the always-free plans |
| Interface | rest, cli an HTTPS JSON API; the AWS CLI and SDKs; PartiQL |
| Tooling | boto3, the AWS CLI, any DynamoDB SDK |
| Composes with | 25 GB that never expires and never pauses, behind an AWS account that needs a card |
| Reliability | no reliability event recorded |
| Notes | 25 RCU is the cap, not 25 GB. Twenty-five strongly-consistent reads a second is a prototype's throughput, and 25 GB of storage behind it will never fill. |
| Evidence note | documented the pricing page was read; the free tier is stated in its own worked examples. |
| Parsed numbers |
|
Evidence 2
| date | source | what it proved |
|---|---|---|
| 2026-10-22 | aws.amazon.com/dynamodb/pricing/ | 'The AWS Free Tier includes 25 WCUs and 25 RCUs for tables using the DynamoDB Standard table class'; the first 25 GB of storage per region are included; Streams includes 2,500,000 read requests a month |
| 2026-10-22 | aws.amazon.com/free/ | DynamoDB is listed on the Free Tier page as 'Available on both plans', which places its allowance in the always-free category rather than the 12-month one |
Unknown values 1
$.reliability_notenothing of this kind was observed