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

Translation API is optimized for translation of short requests. The recommended maximum length for each request is 2K. Translation API will reject very large requests (with a 400 INVALID_ARGUMENT error) regardless of the available quota.

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	user and project

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 API 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, the Translation API enforces quotas on the usage of the API.

v2

For Translation API v2, 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
Requests for the list of supported languages per 100 seconds	1000 requests	1000 requests	100 seconds	project

v3beta1

For Translation API v3beta1, there is a limit on the number of requests you can make. This quota applies to all method calls, not just translation requests, and applies in addition to the content quotas described above.

This quota does not apply to text sent for translation with Translation API v2.

Quota	Activity	Default quota
v3 requests (Beta)	API requests per project	6000

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