Text-to-speech (TTS)BYOK supported

Google Gemini TTS for AI voice agents

Google Gemini TTS is one of the voices you can run a Telenow AI voice agent on. Gemini 3.1 Flash TTS — 30 voices that each speak 90+ languages, directed in plain English: you write the speaker, the scene and the accent (Indian, American, British…) and the same voice performs it. Inline tags ([whispers], [laughs], [excited]) steer delivery mid-sentence when expression is on. Synthesised a whole turn at a time so the performance never drifts between clauses; μ-law 8k telephony, 24k HD on web. Give your agent a Google Gemini TTS voice for natural, streaming speech the caller can't tell from a human. Mix and match it with any LLM, STT, TTS and carrier — Telenow is component-level, so you're never locked in.

Last updated 2026-09-13

Google Gemini TTS voices

Streaming~400ms30 voices

KoreSulafatCharonAchirdAutonoeIapetusLaomedeiaPulcherrimaGacruxAchernarVindemiatrixErinomeSadaltagerRasalgethiAlnilamOrusAlgiebaDespinaSchedarCallirrhoeUmbrielZubenelgenubiAoedeZephyrLedaPuckSadachbiaFenrirEnceladusAlgenib

Frequently asked questions

Can I use a Google Gemini TTS voice for my AI agent?+

Yes — pick a Google Gemini TTS voice in Telenow and your agent speaks with it on every call, streaming so there's no awkward pause.

What voices does Google Gemini TTS offer?+

Kore, Sulafat, Charon, Achird, Autonoe, Iapetus, Laomedeia, and Pulcherrima, and more — choose by language, gender and style in the builder.

Does Google Gemini TTS stream speech in real time?+

Yes — Google Gemini TTS streams audio as it's generated, so the agent starts talking immediately instead of waiting for the whole sentence.

How much does Google Gemini TTS cost for a voice agent?+

You pay Google Gemini TTS's usage at cost plus Telenow's transparent platform fee — billed per component (speech, model, telephony) and per minute, with new accounts getting free signup credit to try it.

Can I bring my own Google Gemini TTS API key?+

Yes. Telenow supports BYOK — paste your own Google Gemini TTS key to bill Google Gemini TTS usage to your account, or use the platform key and pay through Telenow.