Inworld TTS

What Inworld TTS is

Inworld TTS is a text-to-speech service available on the web and through an API. It supports commercial use, voice cloning, and output in MP3, WAV, or Opus. Its language support is listed as 200 languages, and an API can stream audio chunks as speech is generated. Users can create a custom voice from 5 to 15 seconds of audio or describe a voice in natural language without providing a sample. The maximum input is 40,000 characters.

The On-Demand option starts free with up to 70 minutes of text-to-speech and 400 minutes of speech-to-text. Paid monthly plans include credits: Creator is $25 a month, Builder is $100 a month, Developer is $300 a month, and Growth is $1,500 a month. Realtime TTS-2 is listed at rates as low as $5 per million characters at scale. Unused subscription credits can roll over for up to three months with an active qualifying subscription, and overage is billed at the selected plan’s rate. Yearly billing offers two months free. The pricing comparison lists GDPR and SOC 2 Type II; HIPAA and BAA are available as Growth plan add-ons.

Who it suits

Inworld TTS suits creators and developers who need speech generation through a web interface or API, including projects that use custom voices or multiple languages. Its plans also address teams and larger deployments, with workspace features on Creator and Builder and compliance add-ons on Growth.

Limits

The On-Demand plan starts free and includes up to 70 minutes of TTS and up to 400 minutes of STT. Creator, the lowest listed monthly subscription, costs $25 a month and includes $25 in monthly credits.

Getting started

1. Visit the Inworld TTS website.
2. Choose web access or use the API.
3. Start with the free On-Demand option or select a paid plan.
4. For a custom voice, provide 5 to 15 seconds of audio or describe a voice in natural language.
5. Choose MP3, WAV, or Opus for audio output.

Verdict

Choose Inworld TTS if you need text-to-speech with API access, commercial use, voice cloning, or broad language support. Check the included credits and plan limits against your usage; the free On-Demand option has up to 70 minutes of TTS, while paid monthly plans start at $25 a month.