Amazon Lex endpoints and quotas - AWS General Reference

Amazon Lex endpoints and quotas

The following are the service endpoints and service quotas for this service. To connect programmatically to an AWS service, you use an endpoint. In addition to the standard AWS endpoints, some AWS services offer FIPS endpoints in selected Regions. For more information, see AWS service endpoints. Service quotas, also referred to as limits, are the maximum number of service resources or operations for your AWS account. For more information, see AWS service quotas.

V2 service endpoints

Model building endpoints

Region Name Region Endpoint Protocol
US East (N. Virginia) us-east-1 models-v2-lex.us-east-1.amazonaws.com HTTPS
US West (Oregon) us-west-2 models-v2-lex.us-west-2.amazonaws.com HTTPS
Africa (Cape Town) af-south-1 models-v2-lex.af-south-1.amazonaws.com HTTPS
Asia Pacific (Seoul) ap-northeast-2 models-v2-lex.ap-northeast-2.amazonaws.com HTTPS
Asia Pacific (Singapore) ap-southeast-1 models-v2-lex.ap-southeast-1.amazonaws.com HTTPS
Asia Pacific (Sydney) ap-southeast-2 models-v2-lex.ap-southeast-2.amazonaws.com HTTPS
Asia Pacific (Tokyo) ap-northeast-1 models-v2-lex.ap-northeast-1.amazonaws.com HTTPS
Canada (Central) ca-central-1 models-v2-lex.ca-central-1.amazonaws.com HTTPS
Europe (Frankfurt) eu-central-1 models-v2-lex.eu-central-1.amazonaws.com HTTPS
Europe (Ireland) eu-west-1 models-v2-lex.eu-west-1.amazonaws.com HTTPS
Europe (London) eu-west-2 models-v2-lex.eu-west-2.amazonaws.com HTTPS

Runtime endpoints

Region Name Region Endpoint Protocol
US East (N. Virginia) us-east-1 runtime-v2-lex.us-east-1.amazonaws.com HTTPS
US West (Oregon) us-west-2 runtime-v2-lex.us-west-2.amazonaws.com HTTPS
Africa (Cape Town) af-south-1
Asia Pacific (Seoul) ap-northeast-2
Asia Pacific (Singapore) ap-southeast-1 runtime-v2-lex.ap-southeast-1.amazonaws.com HTTPS
Asia Pacific (Sydney) ap-southeast-2 runtime-v2-lex.ap-southeast-2.amazonaws.com HTTPS
Asia Pacific (Tokyo) ap-northeast-1 runtime-v2-lex.ap-northeast-1.amazonaws.com HTTPS
Canada (Central) ca-central-1 runtime-v2-lex.ca-central-1.amazonaws.com HTTPS
Europe (Frankfurt) eu-central-1 runtime-v2-lex.eu-central-1.amazonaws.com HTTPS
Europe (Ireland) eu-west-1 runtime-v2-lex.eu-west-1.amazonaws.com HTTPS
Europe (London) eu-west-2 runtime-v2-lex.eu-west-2.amazonaws.com HTTPS

V1 service endpoints

Model building endpoints

Region Name Region Endpoint Protocol
US East (N. Virginia) us-east-1

models.lex.us-east-1.amazonaws.com

models-fips.lex.us-east-1.amazonaws.com

HTTPS

HTTPS

US West (Oregon) us-west-2

models.lex.us-west-2.amazonaws.com

models-fips.lex.us-west-2.amazonaws.com

HTTPS

HTTPS

Asia Pacific (Singapore) ap-southeast-1 models.lex.ap-southeast-1.amazonaws.com HTTPS
Asia Pacific (Sydney) ap-southeast-2 models.lex.ap-southeast-2.amazonaws.com HTTPS
Asia Pacific (Tokyo) ap-northeast-1 models.lex.ap-northeast-1.amazonaws.com HTTPS
Europe (Frankfurt) eu-central-1 models.lex.eu-central-1.amazonaws.com HTTPS
Europe (Ireland) eu-west-1 models.lex.eu-west-1.amazonaws.com HTTPS
Europe (London) eu-west-2 models.lex.eu-west-2.amazonaws.com HTTPS
AWS GovCloud (US-West) us-gov-west-1

models.lex.us-gov-west-1.amazonaws.com

models-fips.lex.us-gov-west-1.amazonaws.com

HTTPS

HTTPS

Runtime endpoints

Region Name Region Endpoint Protocol
US East (N. Virginia) us-east-1

runtime.lex.us-east-1.amazonaws.com

runtime-fips.lex.us-east-1.amazonaws.com

HTTPS

HTTPS

US West (Oregon) us-west-2

runtime.lex.us-west-2.amazonaws.com

runtime-fips.lex.us-west-2.amazonaws.com

HTTPS

HTTPS

Asia Pacific (Singapore) ap-southeast-1 runtime.lex.ap-southeast-1.amazonaws.com HTTPS
Asia Pacific (Sydney) ap-southeast-2 runtime.lex.ap-southeast-2.amazonaws.com HTTPS
Asia Pacific (Tokyo) ap-northeast-1 runtime.lex.ap-northeast-1.amazonaws.com HTTPS
Europe (Frankfurt) eu-central-1 runtime.lex.eu-central-1.amazonaws.com HTTPS
Europe (Ireland) eu-west-1 runtime.lex.eu-west-1.amazonaws.com HTTPS
Europe (London) eu-west-2 runtime.lex.eu-west-2.amazonaws.com HTTPS
AWS GovCloud (US-West) us-gov-west-1

runtime.lex.us-gov-west-1.amazonaws.com

runtime-fips.lex.us-gov-west-1.amazonaws.com

HTTPS

HTTPS

Service quotas

Name Default Adjustable
Bot channel associations per bot alias (V2) 10 No
Bots per account (V2) 100 Yes
Characters per custom slot type value (V2) 500 No
Characters per sample utterance (V2) 500 No
Custom slot type values and synonyms per bot locale (V2) 50,000 No
Custom slot types per bot locale (V2) 100 No
Sample utterances per intent (V2) 1,500 Yes
Sample utterances per slot (V2) 10 Yes
Slots per bot locale (V2) 2,000 No
Slots per intent (V2) 100 No
Total characters in sample utterances per bot locale (V2) 200,000 No
Values and synonyms per custom slot type (V2) 10,000 No
Versions per bot (V2) 100 No