Conversational language understanding limits
Use this article to learn about the data and service limits when using conversational language understanding.
Language resource limits
Your Language resource must be one of the following pricing tiers:
Tier Description Limit F0 Free tier You are only allowed one F0 Language resource per subscription. S Paid tier You can have up to 100 Language resources in the S tier per region.
See pricing for more information.
You can have up to 500 projects per resource.
Project names have to be unique within the same resource across all custom features.
Regional availability
See Language service regional availability.
API limits
| Item | Request type | Maximum limit |
|---|---|---|
| Authoring API | POST | 10 per minute |
| Authoring API | GET | 100 per minute |
| Prediction API | GET/POST | 1,000 per minute |
Quota limits
| Pricing tier | Item | Limit |
|---|---|---|
| F | Training time | 1 hour per month |
| S | Training time | Unlimited, Pay as you go |
| F | Prediction Calls | 5,000 request per month |
| S | Prediction Calls | Unlimited, Pay as you go |
Data limits
The following limits are observed for the conversational language understanding.
| Item | Lower Limit | Upper Limit |
|---|---|---|
| Number of utterances per project | 1 | 50,000 |
| Utterance length in characters (authoring) | 1 | 500 |
| Utterance length in characters (prediction) | 1 | 1000 |
| Number of intents per project | 1 | 500 |
| Number of entities per project | 0 | 350 |
| Number of list synonyms per entity | 0 | 20,000 |
| Number of list synonyms per project | 0 | 2,000,000 |
| Number of prebuilt components per entity | 0 | 7 |
| Number of regular expressions per project | 0 | 20 |
| Number of trained models per project | 0 | 10 |
| Number of deployments per project | 0 | 10 |
Naming limits
| Item | Limits |
|---|---|
| Project name | You can only use letters (a-z, A-Z), and numbers (0-9) , symbols _ . -, with no spaces. Maximum allowed length is 50 characters. |
| Model name | You can only use letters (a-z, A-Z), numbers (0-9) and symbols _ . -. Maximum allowed length is 50 characters. |
| Deployment name | You can only use letters (a-z, A-Z), numbers (0-9) and symbols _ . -. Maximum allowed length is 50 characters. |
| Intent name | You can only use letters (a-z, A-Z), numbers (0-9) and all symbols except ":", $ & % * ( ) + ~ # / ?. Maximum allowed length is 50 characters. |
| Entity name | You can only use letters (a-z, A-Z), numbers (0-9) and all symbols except ":", $ & % * ( ) + ~ # / ?. Maximum allowed length is 50 characters. |