Quotas & Limits

This document contains current API restrictions and usage quotas on use of the Translation API. This page is updated when there are changes to these restrictions and usage quotas.

These quotas apply to each Translation API developer project and each user, and are shared across all applications and API versions used by a given developer project.

You can edit your quotas up to their maximum values by using the Google Cloud Platform Dashboard. To request an increase above the maximum for a quota, submit a request from the Google Cloud Platform Console page.

Content quotas

Content is provided as text strings to the Translation API. Both pricing and usage are based on character count. All characters sent to the Translation API count towards these quotas, including whitespace characters.

Translation API is optimized for translation of short requests. The recommended maximum length for each request is 2K code points. The Translation API rejects very large requests and yields a 400 INVALID_ARGUMENT error) regardless of the available quota.

Character-based quota applies to the translateText and detectLanguage methods. The hard limit for requests is 30K Unicode characters (code points).

Content Quota	Default	Maximum	Duration	Applies to
v2 and v3 Characters per day	1 billion	unlimited	day	project
v2 and v3 Characters per 100 seconds per project	1,000,000 characters	10,000,000 characters	100 seconds	project
v2 and v3 Characters per 100 seconds per project per user	100,000 characters	10,000,000 characters	100 seconds	project and user

Note: Quota daily limits are updated once a day which means new limits may take up to 24 hours to become effective.

If you exceed your quota, Translation v2 returns a 403 error. The error message says Daily Limit Exceeded if you exceeded the daily limit or User Rate Limit Exceeded if you exceeded either of the "Characters per 100 seconds" quotas.

To view or change usage limits for your project, or to request an increase to your quota, do the following:

1. If you don't already have a billing account for your project, then create one.
2. Visit the Enabled APIs page of the API library in the GCP Console, and select an API from the list.
3. To view and change quota-related settings, select Quotas. To view usage statistics, select Usage.

Request quotas

In addition to the content quotas shown above, Cloud Translation enforces quotas on the usage of the API.

Discover supported languages requests

For Cloud Translation v2 and v3beta1, there is a limit on how often you can request the list of supported languages for translation.

This quota does not apply to text sent for translation. It applies only to requests for the list of supported languages.

Quota	Default	Maximum	Duration	Applies to
v2 and v3 requests for the list of supported languages	1000 requests	1000 requests	100 seconds	project

v3beta1

For Cloud Translation v3beta1, there is a limit to the number of requests you can make. This quota applies to all v3beta1 method calls except translateText, detectLanguage, getSupportedLanguages, which are covered by v2 and v3 Characters and v2 and v3 Requests for the list of supported languages per 100 seconds quotas, respectively (see above).

This quota does not apply to requests sent to Cloud Translation v2.

Activity	Default quota	Applies to
API requests per project	6000	project
API requests per project per user	unlimited	project and user

For requests that use a custom AutoML Translation model, the AutoML Translation characters per minute quota also applies.