Cloud provider services - verified
Amazon S3 Vectors
Amazon S3 Vectors is listed under cloud provider services (deployment type: cloud-native service). First listed price, in its own unit: $2.50, per 1M queries (US East example). Max dimensions: 4,096. Read from the vendor's own pages on October 18, 2026.
Read from docs.aws.amazon.com, aws.amazon.com. Docs - Pricing - Compare every vector database
Status
- Availability label
- Not stated
No GA or preview label is quoted from the pages checked.
- New default
S3 Vectors: ENHANCED is the default index mode for buckets created on or after September 30, 2026
S3 Vectors has two index modes, ENHANCED and CLASSIC, and AWS recommends ENHANCED for almost all workloads. Vector buckets created on or after September 30, 2026 default to ENHANCED and cannot use CLASSIC.
“The modes are ENHANCED and CLASSIC. We recommend ENHANCED for almost all workloads, because it gives you higher recall on filtered queries and additional filter operators.”
docs.aws.amazon.com “A vector bucket created on or after September 30, 2026 has a default index mode of ENHANCED, and indexes in it cannot use CLASSIC.”
docs.aws.amazon.com Research note: Index modes: vector buckets created on or after September 30, 2026 default to ENHANCED and cannot use CLASSIC, per the vector index docs. Source page
How Amazon S3 Vectors charges
Every price Amazon S3 Vectors states, in its own unit, with the quote and where it comes from. Nothing is converted.
| Price | Unit, as stated | Quote and source | Where it comes from |
|---|---|---|---|
| Per 1M queries | |||
| $2.50 | per 1M queries (US East example) | “Queries are charged based on a per-query request fee ($2.50/MM queries)” |
|
| Other units, one row eachnot sorted: no two rows share a unit | |||
| $0.004 / $0.002 | per TB processed by query, first 100K vectors / 100K to 10M vectors (US East example) | “a data processed charge ($0.004/TB for the first 100K vectors, $0.002/TB for 100K” |
|
| $0.0004 | per TB processed by query, 10M+ vectors (US East example) | “$0.0004/TB for 10M+ vectors” |
|
| $0.01 | per GB returned (US East example) | “and a data returned charge ($0.01/GB)” |
|
| $0.20 | per GB uploaded (PUT, US East example) | “Total monthly PUT cost = 1 full upload/6 months * 59 GB total storage * $0.20/GB = $1.97” |
|
| Per GB-month stored | |||
| $0.06 | per GB-month logical storage (US East example) | “Total monthly storage cost = 59 GB * $0.06/GB per month = $3.54” |
|
Rates are taken from the worked pricing example on the S3 pricing page, which says "This example uses pricing for the US East (N. Virginia) AWS Region."
Free tier and limits
- Free tier
- Not stated
No S3 Vectors free tier is stated on the pricing page checked.
- Limits
Up to 2 billion vectors per index; 10,000 indexes per bucket; 10,000 buckets per Region per account
“Vectors per vector index: Up to 2 billion”
docs.aws.amazon.com “Vector buckets per AWS Region in an account: 10,000”
docs.aws.amazon.com
Search and indexing
- Max dimensions
4,096
“Dimension value per vector: 1 to 4,096”
docs.aws.amazon.com - Distance metrics
Cosine, Euclidean
“When you create a vector index, you specify the distance metric (Cosine or Euclidean)”
docs.aws.amazon.com - Index types
Index modes ENHANCED and CLASSIC (ANN algorithm not named)
“The modes are ENHANCED and CLASSIC. We recommend ENHANCED for almost all workloads, because it gives you higher recall on filtered queries and additional filter operators.”
docs.aws.amazon.com - Hybrid and sparse search
- Not stated
Keyword or sparse search is not described on the pages checked.
- Metadata filtering
Yes
“When adding vector data to a vector index, you can also attach metadata for future filtering queries based on a set of conditions”
docs.aws.amazon.com - Multi-tenancy
Vector buckets and vector indexes (up to 10,000 indexes per bucket)
“Vector indexes per vector bucket: 10,000”
docs.aws.amazon.com
Built-in embedding and reranking
- Built-in embedding
- Not stated
Not stated on the pages checked.
- Built-in reranking
- Not stated
Not stated on the pages checked.
Deployment, license and SDKs
- Regions and clouds
- Not stated
AWS only; the Region list is not on the pages checked.
- BYOC and self-host
- Not stated
Managed AWS service; not applicable.
- License
- Not stated
Managed service; no license stated.
- SDKs
- Not stated
Not listed on the pages checked.
Vendor-stated claims
Performance, scale and SLA figures as Amazon S3 Vectors states them. Not measured.
Subsecond latency for infrequent queries, as low as 100 ms for frequent queriesvendor-stated
“delivers subsecond latency for infrequent queries and as low as 100 milliseconds for more frequent queries”
Up to 90% lower costs for uploading, storing and querying vectorsvendor-stated
“Amazon S3 Vectors provides cost-effective, elastic, and durable vector storage at up to 90% lower costs for uploading, storing, and querying vectors.”
Research notes
Index modes: vector buckets created on or after September 30, 2026 default to ENHANCED and cannot use CLASSIC, per the vector index docs. Indexes can be exported to Amazon OpenSearch Serverless for higher-QPS search per the overview. The index docs say: "A vector bucket created on or after September 30, 2026 has a default index mode of `ENHANCED`, and indexes in it cannot use `CLASSIC`."
FAQ
How much does Amazon S3 Vectors cost?
In Amazon S3 Vectors's own units: $2.50 (per 1M queries (US East example)); $0.004 / $0.002 (per TB processed by query, first 100K vectors / 100K to 10M vectors (US East example)); $0.0004 (per TB processed by query, 10M+ vectors (US East example)); $0.01 (per GB returned (US East example)); $0.06 (per GB-month logical storage (US East example)); $0.20 (per GB uploaded (PUT, US East example)). As of October 18, 2026; prices are not converted.
What is the maximum vector dimension in Amazon S3 Vectors?
4,096, per the vendor: "Dimension value per vector: 1 to 4,096"
Does Amazon S3 Vectors support hybrid search?
Not stated. Keyword or sparse search is not described on the pages checked.
Does Amazon S3 Vectors have built-in embedding or reranking?
Embedding: not stated. Not stated on the pages checked. Reranking: not stated. Not stated on the pages checked.
Sources
Last verified from each vendor's own docs, pricing pages, READMEs and license files; every quote was string-matched against the page that day. This is a dated snapshot, not a benchmark: prices are shown in each product's own unit and change without notice, so check the linked source before you commit.
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