Rate limits

VUILabs applies both project-level and platform-level limits to the synchronous and streaming TTS endpoints.

Your project’s limits are shown in Console → Projects → Rate limits and may vary by project.

When a limit is reached, the API returns HTTP 429. Wait briefly before trying again. If this happens often, request a capacity review.

For a capacity review, contact contact@vuilabs.ai with the project ID, expected request rate, concurrency, and traffic pattern.