Supported regions
For a list of AWS regions where Amazon Kendra is available, see Amazon Kendra regions and endpoints in the Amazon Web Services General Reference.
Important
Amazon Kendra GenAI Enterprise Edition indices are only available in the US East (N. Virginia), US West (Oregon), Europe (Ireland), Asia Pacific (Sydney), regions.
Quotas
Service quotas, also referred to as limits, are the maximum number of service resources for your AWS account. For more information, see Amazon Kendra service quotas in the AWS General Reference.
Note
Quotas for Amazon Kendra GenAI Enterprise Edition indices aren't currently available in the Service Quotas console.
Index quotas
| Description | Default | Edition | Adjustable |
|---|---|---|---|
| Maximum number of indices per account | 10 | GenAI Enterprise, Developer, Enterprise | Yes |
| Amount of text extracted for an index in a single unit (Developer). You can't add extra units for extracting text for the Developer Edition. | 3 GB | Developer | No |
| Amount of text extracted for an index in a single unit
(Enterprise). You can add up to 100 extra units for extracting text
for the Enterprise Edition, or simply contact Support |
30 GB | GenAI Enterprise | Yes |
| Maximum number of storage capacity units per GenAI Enterprise Edition index | 50 | Enterprise | Yes |
Data source connector quotas
| Description | Default | Edition | Adjustable |
|---|---|---|---|
| Maximum number of data source connectors per index (Developer) | 5 | Developer | No |
| Maximum number of data source connectors per index (Enterprise) | 50 | Enterprise | Yes |
| Maximum number of data source connectors per index (GenAI Enterprise) | 50 | GenAI Enterprise | Yes |
| Maximum hours of connector sync usage per GenAI Enterprise Index per month | 500 | GenAI Enterprise | Yes |
| Maximum size of a single document or raw file that can be ingested when using a data source connector | 50 MB | GenAI Enterprise, Developer, Enterprise | Yes |
| Maximum number of S3 prefixes in the access control list configuration file included in the Amazon S3 data source connector | 100 | Developer, Enterprise | No |
| Maximum size of the access control list configuration file included in the Amazon S3 data source connector | 50 MB | Developer, Enterprise | Yes |
FAQ quotas
| Description | Default | Edition | Adjustable |
|---|---|---|---|
| Maximum number of FAQs per index | 30 | Developer, Enterprise | Yes |
| Maximum size of 1 FAQ | 5 MB | Developer, Enterprise | Yes |
| Maximum number of results returned for FAQ | 4 | Developer, Enterprise | Yes |
| Maximum number of characters allowed for a FAQ question | 300 | Developer, Enterprise | No |
| Maximum number of characters in an FAQ answer | 2000 | Developer, Enterprise | No |
Thesaurus quotas
| Description | Default | Edition | Adjustable |
|---|---|---|---|
| Maximum number of thesauri per index | 1 | Developer, Enterprise | No |
| Maximum size of a thesaurus file | 5 MB | Developer, Enterprise | Yes |
| Maximum number of synonym rules per thesaurus | 10,000 | Developer, Enterprise | Yes |
| Maximum number of synonyms per term in all thesauri in an index | 10 | Developer, Enterprise | No |
Amazon Kendra experience quotas
| Description | Default | Edition | Adjustable |
|---|---|---|---|
| Maximum number of Amazon Kendra experiences per index | 50 | Developer, Enterprise | Yes |
Query and search results quotas
Note
Query per second is shared across retrieve and query API.
| Description | Default | Edition | Adjustable |
|---|---|---|---|
| Amount of queries per second for an index in a single unit (Developer). You can't add extra units for queries for the Developer Edition. | 0.05 | Developer | No |
| Amount of queries per second for an index in a single unit
(Enterprise). You can add up to 100 extra units for queries for the
Enterprise Edition, or simply contact Support |
0.1 | Enterprise | Yes |
| Maximum number of query capacity units per GenAI Enterprise Edition index | 100 | GenAI Enterprise | Yes |
| Maximum number of characters per query text | 1000 | GenAI Enterprise, Developer, Enterprise | Yes |
| Maximum number of search results per query. Default is 100. To
allow more than 100 results, simply contact Support |
100 | Developer, Enterprise | Yes |
| Maximum number of search results per page | 100 | Developer, Enterprise | Yes |
| Maximum number of token words per query text before truncation.
Default is 30. To allow more than 30 words, simply contact Support |
30 | Developer, Enterprise | Yes |
| Maximum user-group list size per query attribute | 1000 | GenAI Enterprise, Developer, Enterprise | Yes |
| Maximum string list size per query attribute | 10 | GenAI Enterprise, Developer, Enterprise | Yes |
Query suggestions quotas
| Description | Default | Edition | Adjustable |
|---|---|---|---|
| Maximum number of query suggestions returned per GetQuerySuggestions call | 10 | Developer, Enterprise | Yes |
| Maximum number of fields/attributes for query suggestions per GetQuerySuggestions call | 10 | Developer, Enterprise | Yes |
| Maximum number of additional fields/attributes for query suggestions per GetQuerySuggestions call | 5 | Developer, Enterprise | Yes |
| Maximum number of block lists per index | 1 | Developer, Enterprise | No |
| Maximum size of a block list text file | 2 MB | Developer, Enterprise | Yes |
| Maximum number of items (words or phrases) in a block list | 20,000 | Developer, Enterprise | Yes |
Maximum number of spell-corrected query suggestions to return in
a Query API call. |
1 | Developer, Enterprise | Yes |
Document quotas
| Description | Default | Edition | Adjustable |
|---|---|---|---|
| Amount of text extracted for an index in a single unit (Developer). You can't add extra units for extracting text for the Developer Edition. | 3 GB | Developer | No |
| Amount of text extracted for an index in a single unit
(Enterprise). You can add up to 100 extra units for extracting text
for the Enterprise Edition, or simply contact Support |
30 GB | Enterprise | Yes |
| Maximum size of a single document or raw file when using a data source connector | 50 MB | Developer, Enterprise | Yes |
Maximum size of a single document or raw file when using the
BatchPutDocument API |
5 MB | GenAI Enterprise, Developer, Enterprise | Yes |
| Maximum amount of text extracted from a single document | 5 MB | Developer, Enterprise | No |
| Maximum number of custom fields/attributes per index | 500 | Developer, Enterprise | No |
Featured search results quotas
| Description | Default | Edition | Adjustable |
|---|---|---|---|
| Maximum number of featured documents per featured results set | 4 | Enterprise | Yes |
| Maximum number of query texts per featured results set | 49 | Enterprise | No |
| Maximum number of characters per query text in a featured results set | 1000 | Enterprise | Yes |
| Maximum number of featured results sets per index | 50 | Enterprise | Yes |
Rescore/rerank search results quotas
| Description | Default | Edition | Adjustable |
|---|---|---|---|
Maximum number of Rescore requests per second for a
rescore execution plan or a single unit of capacity. You can add up
to 1000 extra units. |
0.01 | Enterprise | No |
| Maximum number of rescore execution plans per account. | 50 | Enterprise | Yes |
Maximum number of tokens in Title for a document in
a Rescore request. |
100 | Enterprise | No |
Maximum number of tokens in Body for a document in a
Rescore request. |
200 | Enterprise | No |
Maximum number of documents in a Rescore
request. |
25 | Enterprise | No |
Maximum number of documents per group in a Rescore
request. |
3 | Enterprise | No |
For more information about Amazon Kendra service quotas and to request a quota increase, see Service Quotas.
