TTS is FREE for the month of December

We are excited to announce a special end-of-year event for our developer community. In December, Inworld Text-to-Speech (TTS) API calls are free across all models! Whether you are testing new features or scaling production traffic, usage from December 1st to December 31st, 2025 is on the house.
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How to Unlock Unlimited Access

To take advantage of this offer beyond your initial $10 sign-up credit, you must satisfy a few requirements:
  • Add a Payment Method: You must add a valid credit card on the billing page to unlock usage.
  • Zero Charge Policy: Your dashboard will continue to track TTS usage for your analytics, but we will not charge your card for any TTS traffic generated during this period.

Technical Details & Limits

  • Rate Limits: The default request rate limit is set to 20 QPS (Queries Per Second).
  • Production Traffic: If you anticipate traffic exceeding this limit, please submit a request for an increase. Note: Increases are subject to review and approval is not guaranteed.
Important Billing Note: This promotion applies only to Inworld Text-to-Speech models. Requests made to LLMs, Embedding models, Speech Recognition (ASR), and other models or model providers will continue to be billed according to our standard official pricing.
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