Gemini 3.8 Flash-Lite TTS - Ekly API

Google’s fast, lower-cost voice for everyday narration and read-aloud: 101 languages, the same delivery notes, inline <vocal tags> and two-speaker dialogue as Flash, at about two thirds of the price. The natural successor to the Gemini TTS preview.


Model id	`gemini-3.8-flash-lite-tts`
Media	audio
Submit to	`POST /v1/audio`
Price	0.0275 credits per 1,000 input tokens + 0.33 credits per 1,000 output tokens before discounts
Typical time	about 6.0 s

Request

Required: text
Optional: delivery, voice_name

{
  "model": "gemini-3.8-flash-lite-tts",
  "text": "Chapter one. <short pause> The house had stood empty for eleven years.",
  "voice_name": "Zephyr"
}

Field	Allowed	Default
`delivery`	text
`voice_name`	`Zephyr`, `Puck`, `Charon`, `Kore`, `Fenrir`, `Leda`, `Orus`, `Aoede`, `Callirrhoe`, `Autonoe`, `Enceladus`, `Iapetus` …	`"Zephyr"`

Reference inputs take asset ids from POST /v1/uploads or an earlier output’s asset_id. Prices and allowed values come from the live catalog; GET /v1/models/gemini-3.8-flash-lite-tts is always current.