Where can you use Gemini 3.8 Flash TTS today? API, Notebook, Vids
Google lists Gemini 3.8 TTS in the Gemini API, AI Studio, Gemini Notebook and Google Vids now; the Enterprise API is coming soon. What Sume offers instead.

Per Google's announcement, Gemini 3.8 TTS is available now in the Gemini API and AI Studio, in Gemini Notebook (Flash TTS) and in Google Vids (Flash-Lite TTS); the Gemini Enterprise API is listed as coming soon. The changelog dates general availability to Sept 22.
Where each model shows up
From the Google blog post and the changelog:
| Surface | Status | Model |
|---|---|---|
| Gemini API and AI Studio | Available | gemini-3.8-flash-tts, gemini-3.8-flash-lite-tts |
| Gemini Notebook | Available | Flash TTS |
| Google Vids | Available | Flash-Lite TTS |
| Gemini Enterprise API | Coming soon | Not stated |
Why it matters for a team
If your company buys through an enterprise agreement, the enterprise endpoint is not there yet, and no date is given. The developer API route works now, and the model page lists 130+ languages for Flash and 100+ for Flash-Lite.
Where Sume fits
Sume TTS 1.0 is a separate model (sume/tts-1.0) with its own voices and a per-character price, not a wrapper around Gemini. Check the API reference and GET /v1/catalog for what your account can call. Sume does not state that Gemini TTS is in its catalog, and we do not claim it is.
Sources
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