This document contains current API restrictions and usage quotas on use of the Natural Language API. This page will be updated to reflect any changes to these restrictions and usage quotas.
These quotas apply to each Cloud Natural Language API developer project and each user, and are shared across all applications and IP addresses using a given developer project.
You can edit your quotas up to their maximum values by selecting EDIT QUOTAS from the Quotas page of the Google Cloud Platform Dashboard. To request an increase above the maximum quota, edit your quota with your requested increase and justification and submit your update. You will be notified when your request has been received. You might be contacted for more information regarding your request. After your request has been reviewed, you will be notified whether it has been approved or denied.
Language restrictions
The Natural Language API currently supports only the languages listed in Language Support.
Content quotas
Content to the Natural Language API is provided as a text string. The Natural Language API processes this text into a series of tokens, which roughly correspond to word boundaries. All Natural Language API features (Sentiment Analysis, Entity Extraction, and Syntactic Analysis) use these tokens as the building blocks for performing analysis on the provided text.
The API contains the following quotas on the size of this content for each request:
| Content Quota | Value | Overflow Result |
|---|---|---|
| Text Content | 1,000,000 bytes | API Error |
| Token Quota | 100,000 tokens | Ignored |
| Entity Mentions | 5,000* | Ignored |
Attempting to process content in excess of the Text Content quota will produce an error. Attempting to process tokens in excess of the Token Quota will not produce an error, but any tokens over that quota will be ignored.
Note that byte counts may not reflect character counts, depending on the encoding used within the text content.
* The Entity Mentions quota includes not only returned mentions within the
document, but any noun references to those entities, including pronouns.
Note that those pronouns are not returned directly in the mentions field,
though they do count against the quota.
Request quotas
The current API usage quotas for the Cloud Natural Language API are as follows (and are subject to change):
| Type of Quota | Usage Quota |
|---|---|
| Requests per minute | 600 |
| Requests per day | 800,000 |