Gemini 3.8 Flash TTS

Credit amounts are left out because they change. The lowest price is creditCost on GET /v1/models, and POST /v1/jobs answers with the exact creditCost of a request.

input fieldsCopy Anchor Link

Send the fields below inside the input object. A field you leave out takes its Default. Unknown field names are dropped without an error, so check the spelling if a setting seems to have no effect.

dialogue_turns entriesCopy Anchor Link

Every object inside dialogue_turns takes these fields.

Rules by settingCopy Anchor Link

This model runs a different version depending on what you send. The rules below are checked before any credits move; a request that breaks one is refused with 400 and a message naming the field.

tier = flash and mode = single

• voice_2 and filler_words are not used; any value sent is ignored.
• Takes no entries in dialogue_turns; a request that fills it is refused.
• prompt at least 1 characters.

tier = flash and mode = dialogue

• prompt and style are not used; any value sent is ignored.
• dialogue_turns needs at least 1 entries.

tier = flash_lite and mode = single

• voice_2 and filler_words are not used; any value sent is ignored.
• Takes no entries in dialogue_turns; a request that fills it is refused.
• prompt at least 1 characters.

tier = flash_lite and mode = dialogue

• prompt and style are not used; any value sent is ignored.
• dialogue_turns needs at least 1 entries.

Example requestCopy Anchor Link

{
  "modelSlug": "gemini-tts",
  "input": {
    "prompt": "Welcome to Kopi Senja. Every iced coffee is twenty percent off today."
  }
}