# Gemini TTS API

> Text-to-speech מיט 30 קולות, מולטי־רעדנער־דיאַלאָג, סטייל־אינסטרוקציעס און אַ Flash אָדער Pro־מאָדעל־אויסקלײַב

פֿאַרוואַנדלט ביז 50,000 אותיות טעקסט אין רעדע. אויסקלײַבן אַ `voice`, און `model` gemini-2.5-flash-tts אָדער gemini-2.5-pro-tts. `style_instructions` (ביז 4000 אותיות) פֿירט די אויפֿפֿירונג, און `speakers` נעמט 2 ביז 10 איינסן פֿאַר מולטי־קול־סקריפּטן. אָפּציאָנאַל `language_code`, `temperature` 0 ביז 2, און wav, mp3 אָדער ogg_opus־אויסגאַנג.

- Model id: `gemini-tts`
- Made by: Google
- Category: Text to Speech
- Output: audio
- Estimated price per run: $0.03 / run (cheapest run $0.03 (30 API credits))
- Run: `POST https://api.doitong.com/v1/run/gemini-tts`
- Quote: `POST https://api.doitong.com/v1/quote/gemini-tts`
- Docs page: https://doitong.com/yi/developers/models/gemini-tts

## Pricing

Price: **$0.03 / run**. Estimated from the typical cost of one run. The quote is exactly what the run charges.

The full example input below costs $0.03 = 30 API credits (1 request × 30 API credits).

Prices are the upstream price in USD, paid from the API balance in API credits (1000 API credits = 1 USD). `POST https://api.doitong.com/v1/quote/gemini-tts` with the same JSON body returns the exact price for that input; the quote is exactly what a run charges. Invalid input is never charged and failed or canceled requests are refunded automatically.

## Input parameters

| Parameter | Canonical name | Type | Required | Default | Allowed values / range | Description |
|---|---|---|---|---|---|---|
| `prompt` |  | string | yes |  | 1 – 50000 characters | רעדע־טעקסט פֿאַר Gemini TTS, מיט אַרײַנגעבעטענע אינסטרוקציעס אין נאַטירלעכער שפּראַך פֿאַר סטיל, גיכקייט, אַקצענט און עמאָציע, ווי 'Say cheerfully: Have a wonderful day!'. אינלײַן־מאַרקערס ווי [slowly], [whispering], [excited], און [extremely fast] קאָנטראָלירן אויך גיכקייט און סטיל. עטלעכע רעדנער דאַרפן שורות וואָס אָנהייבן מיט אַליאַסן פֿון speakers, למשל 'Alice: Hello!\nBob: Hi!'. |
| `style_instructions` |  | string \| null | no |  | ≤ 4000 characters | אָפּציאָנעלע אינסטרוקציעס אין נאַטירלעכער שפּראַך, געהאַלטן באַזונדער פון גערעדטן אינהאַלט און אַרײַנגעשטעלט פֿאַרן פּראָמפּט צו פֿאָרמירן אויסדרוק, אַקצענט, גיכקייט, טאָן און עמאָציע. בײַשפּילן אַרײַננעמען 'Speak warmly and slowly', 'Read this as a dramatic newscast', 'Use a British accent with a cheerful tone', און 'Whisper mysteriously'. |
| `voice` |  | enum (string) | no | `Kore` | `Achernar`, `Achird`, `Algenib`, `Algieba`, `Alnilam`, `Aoede`, `Autonoe`, `Callirrhoe`, `Charon`, `Despina`, `Enceladus`, `Erinome`, `Fenrir`, `Gacrux`, `Iapetus`, `Kore`, `Laomedeia`, `Leda`, `Orus`, `Pulcherrima`, `Puck`, `Rasalgethi`, `Sadachbia`, `Sadaltager`, `Schedar`, `Sulafat`, `Umbriel`, `Vindemiatrix`, `Zephyr`, `Zubenelgenubi` | אויסקלײַב פון איין־רעדנער־שטימע פֿון 30 באַזונדערע פּרעסעטן; באַשטימען speakers מאַכט דעם אויסקלײַב אומאַקטיוו. פּאָפּולערע פֿרויען־אָפּציעס זענען Kore, מיט אַ שטאַרקער און פעסטער איבערגעבן, Zephyr, מיט אַ העלער און קלאָרער איבערגעבן, און Aoede, מיט אַ וואַרעמער און מעלאָדישער איבערגעבן; פּאָפּולערע מענער־אָפּציעס זענען Puck, לעבעדיק און ענערגיש, און Charon, רויִק און פּראָפֿעסיאָנעל. |
| `model` |  | enum (string) | no | `gemini-2.5-flash-tts` | `gemini-2.5-flash-tts`, `gemini-2.5-pro-tts` | Gemini TTS מאָדעל־אויסקלײַב. פֿאַר די העכסטע קוואַליטעט אין סטרוקטורירטע וואָרקפֿלאָוז ווי אַודיאָביכער, פּאָדקאַסטן אָדער קונה־שטיצע, ניצט gemini-2.5-pro-tts. |
| `language_code` |  | enum (string) \| null | no |  | `Arabic (Egypt)`, `Bangla (Bangladesh)`, `Dutch (Netherlands)`, `English (India)`, `English (US)`, `French (France)`, `German (Germany)`, `Hindi (India)`, `Indonesian (Indonesia)`, `Italian (Italy)`, `Japanese (Japan)`, `Korean (South Korea)`, `Marathi (India)`, `Polish (Poland)`, `Portuguese (Brazil)`, `Romanian (Romania)`, `Russian (Russia)`, `Spanish (Spain)`, `Tamil (India)`, `Telugu (India)`, `Thai (Thailand)`, `Turkish (Turkey)`, `Ukrainian (Ukraine)`, `Vietnamese (Vietnam)`, `Afrikaans (South Africa)`, `Albanian (Albania)`, `Amharic (Ethiopia)`, `Arabic (World)`, `Armenian (Armenia)`, `Azerbaijani (Azerbaijan)`, `Basque (Spain)`, `Belarusian (Belarus)`, `Bulgarian (Bulgaria)`, `Burmese (Myanmar)`, `Catalan (Spain)`, `Cebuano (Philippines)`, `Chinese Mandarin (China)`, `Chinese Mandarin (Taiwan)`, `Croatian (Croatia)`, `Czech (Czech Republic)`, `Danish (Denmark)`, `English (Australia)`, `English (UK)`, `Estonian (Estonia)`, `Filipino (Philippines)`, `Finnish (Finland)`, `French (Canada)`, `Galician (Spain)`, `Georgian (Georgia)`, `Greek (Greece)`, `Gujarati (India)`, `Haitian Creole (Haiti)`, `Hebrew (Israel)`, `Hungarian (Hungary)`, `Icelandic (Iceland)`, `Javanese (Java)`, `Kannada (India)`, `Konkani (India)`, `Lao (Laos)`, `Latin (Vatican City)`, `Latvian (Latvia)`, `Lithuanian (Lithuania)`, `Luxembourgish (Luxembourg)`, `Macedonian (North Macedonia)`, `Maithili (India)`, `Malagasy (Madagascar)`, `Malay (Malaysia)`, `Malayalam (India)`, `Mongolian (Mongolia)`, `Nepali (Nepal)`, `Norwegian Bokmal (Norway)`, `Norwegian Nynorsk (Norway)`, `Odia (India)`, `Pashto (Afghanistan)`, `Persian (Iran)`, `Portuguese (Portugal)`, `Punjabi (India)`, `Serbian (Serbia)`, `Sindhi (India)`, `Sinhala (Sri Lanka)`, `Slovak (Slovakia)`, `Slovenian (Slovenia)`, `Spanish (Latin America)`, `Spanish (Mexico)`, `Swahili (Kenya)`, `Swedish (Sweden)`, `Urdu (Pakistan)` | רעדע־שפּראַך פֿאַר מולטילינגוואַלער סינטעז: לאָזט זי אויס כדי דער מאָדעל זאָל אָפּשאַצן די שפּראַך פֿון אייער טעקסט, אָדער צושטעלן זי צו פֿירן דעם גערעדטן רעזולטאַט. עס ווערן געשטיצט 60+ שפּראַכן אין Preview און 24 אין GA. |
| `speakers` |  | array of object {voice, speaker_id} \| null | no |  | 2 – 10 items | רעדנער־קאָנפֿיגוראַציע געשטיצט דורך gemini-2.5-pro-tts און gemini-2.5-flash-tts, אָבער נישט דורך gemini-2.5-flash-lite-preview-tts. איר צושטעלן עס דערלויבט פאַרשידענע שטימען צו לייענען פאַרשידענע טיילן פונעם טעקסט; פֿאַר יעדן רעדנער צושטעלן אַ שטימע פּלוס speaker_id אַליאַס וואָס קאָרעספּאָנדירט צו יענעם רעדנער׳ס פּראָמפּט־פּרעפֿיקסן. |
| `speakers[].voice` |  | enum (string) | yes |  | `Achernar`, `Achird`, `Algenib`, `Algieba`, `Alnilam`, `Aoede`, `Autonoe`, `Callirrhoe`, `Charon`, `Despina`, `Enceladus`, `Erinome`, `Fenrir`, `Gacrux`, `Iapetus`, `Kore`, `Laomedeia`, `Leda`, `Orus`, `Pulcherrima`, `Puck`, `Rasalgethi`, `Sadachbia`, `Sadaltager`, `Schedar`, `Sulafat`, `Umbriel`, `Vindemiatrix`, `Zephyr`, `Zubenelgenubi` | פּרעסטעטירטע שטימע צוגעטיילט צו דעם רעדנער. |
| `speakers[].speaker_id` |  | string | yes |  |  | רעדנער־אַליאַס מיט בלויז אלפאַנומערישע אותיות און אָן ליידיק־רוימען. אידענטיפיצירן דעם רעדנער דורך צולייגן דעם אַליאַס פֿאַרן פּראָמפּט־טעקסט, ווי אין 'Alice: Hello! Bob: Hi there!'. |
| `temperature` |  | number | no | `1` | 0 – 2 | רעדע־ראַנדאָמקייט־באַשטעטיקונג, פֿון פאָקוסירטער, פֿאָרויסזעעוודיקער איבערגעבן בײַ נידעריקע ווערטן ביז שעפֿערישער, פֿאַרשיידנאַרטיקער איבערגעבן בײַ העכערע. |
| `output_format` |  | enum (string) | no | `mp3` | `wav`, `mp3`, `ogg_opus` | פֿאָרמאַט פֿאַרן רעזולטאַט־אַודיאָ: mp3 גיט קאָמפּרעסירטע, קאָמפּאַקטע פֿײַלן און ווערט רעקאָמענדירט; wav אַנטהאַלט אומקאָמפּרעסירטן PCM אין אַ WAV־קאַנטיינער בײַ 24 kHz מיט 16-bit מאָנאָ־אַודיאָ; ogg_opus ניצט Opus אינעווייניק אין Ogg פֿאַר אַ גוטן וואָג צווישן קוואַליטעט און גרייס. |

## Example input

Required parameters only:

```json
{
  "prompt": "Hello from Doitong. This is a short test sentence."
}
```

A fuller example:

```json
{
  "prompt": "Hello from Doitong. This is a short test sentence."
}
```

## Run it

Set `DOITONG_API_KEY` to a key from https://doitong.com/developers/dashboard#keys. `?wait=20` returns the finished request in the same call when it is ready within 20 seconds; otherwise poll `GET /requests/{id}` (it also accepts `?wait=`), or pass `webhook_url`.

### curl

```bash
# Run the model; wait up to 20 s for the finished result in the same call
curl -X POST "https://api.doitong.com/v1/run/gemini-tts?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "prompt": "Hello from Doitong. This is a short test sentence."
  }'

# Still "queued" or "running"? Poll with the id from the response:
curl "https://api.doitong.com/v1/requests/REQUEST_ID?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY"
```

### JavaScript

```javascript
const API = "https://api.doitong.com/v1";
const headers = {
  "Authorization": "Bearer " + process.env.DOITONG_API_KEY,
  "Content-Type": "application/json",
};

// Run the model; wait up to 20 s for the finished result in the same call
let res = await fetch(API + "/run/gemini-tts?wait=20", {
  method: "POST",
  headers,
  body: JSON.stringify({
    "prompt": "Hello from Doitong. This is a short test sentence."
  }),
});
let request = await res.json();
if (!res.ok) throw new Error(request.error.code + ": " + request.error.message);

// Not finished yet: long-poll until it is
while (request.status === "queued" || request.status === "running") {
  res = await fetch(API + "/requests/" + request.id + "?wait=20", { headers });
  request = await res.json();
}
if (request.status !== "succeeded") throw new Error(JSON.stringify(request.error));
console.log(request.outputs.map((o) => o.url), request.cost.credits + " API credits ($" + request.cost.usd + ")");
```

### Python

```python
import os
import requests

API = "https://api.doitong.com/v1"
headers = {"Authorization": "Bearer " + os.environ["DOITONG_API_KEY"]}

payload = {
    "prompt": "Hello from Doitong. This is a short test sentence.",
}

# Run the model; wait up to 20 s for the finished result in the same call
r = requests.post(API + "/run/gemini-tts", params={"wait": 20}, json=payload, headers=headers)
request = r.json()
if not r.ok:
    raise RuntimeError(request["error"]["code"] + ": " + request["error"]["message"])

# Not finished yet: long-poll until it is
while request["status"] in ("queued", "running"):
    request = requests.get(API + "/requests/" + request["id"], params={"wait": 20}, headers=headers).json()
if request["status"] != "succeeded":
    raise RuntimeError(request["error"])
print([o["url"] for o in request["outputs"]], request["cost"]["credits"], "API credits", "$" + request["cost"]["usd"])
```

### MCP

The MCP server at `https://api.doitong.com/v1/mcp` exposes the tools `search_models`, `get_model`, `quote`, `run`, `get_request`, `cancel_request`, `list_requests`, `create_upload` and `get_account`. A `run` call for this model:

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "run",
    "arguments": {
      "model_id": "gemini-tts",
      "input": {
        "prompt": "Hello from Doitong. This is a short test sentence."
      },
      "wait_seconds": 20
    }
  }
}
```

## Response

Every call returns a request object. `status` is one of `queued`, `running`, `succeeded`, `failed`, `canceled`. `outputs` lists the generated files with URLs on our storage (kept forever, or 7 days with `?storage=temporary`; `storage` says which); `output` is the model's own result object with the same URLs.

```json
{
  "id": "req_8k2m4q7x1z9c3v5b6n0p2r4t",
  "object": "request",
  "model": "gemini-tts",
  "status": "succeeded",
  "created_at": "2026-10-20T12:00:00Z",
  "started_at": "2026-10-20T12:00:02Z",
  "completed_at": "2026-10-20T12:00:09Z",
  "queue_position": null,
  "cost": {
    "credits": 30,
    "usd": "0.03",
    "charged": 30,
    "refunded": 0
  },
  "input": {
    "prompt": "Hello from Doitong. This is a short test sentence."
  },
  "output": {
    "audio": {
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.mp3",
      "content_type": "audio/mpeg",
      "file_name": "0-output.mp3",
      "file_size": 1843200
    }
  },
  "outputs": [
    {
      "type": "audio",
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.mp3",
      "content_type": "audio/mpeg",
      "file_size": 1843200,
      "duration": 12,
      "stored": true
    }
  ],
  "error": null,
  "metrics": {
    "inference_seconds": 6.8
  },
  "urls": {
    "self": "https://api.doitong.com/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t",
    "cancel": "https://api.doitong.com/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t/cancel"
  }
}
```

### Output fields (`output`)

| Field | Type | Description |
|---|---|---|
| `audio` | object {url, content_type, file_name, file_size} | אַודיאָ־פֿײַל געשאַפֿן דורך גענערירונג. |

## Related models

- [Eleven v4 Text to Speech](https://doitong.com/developers/models/elevenlabs/tts/eleven-v4.md) (`elevenlabs/tts/eleven-v4`): $0.08 / 1000 characters
- [MiniMax Speech 2.8 HD](https://doitong.com/developers/models/minimax/speech-2.8-hd.md) (`minimax/speech-2.8-hd`): $0.10 / 1000 characters
- [Gemini 3.1 Flash Tts](https://doitong.com/developers/models/gemini-3.1-flash-tts.md) (`gemini-3.1-flash-tts`): $0.05 / 1000 characters
- [Gemini 3.8 Flash Lite TTS](https://doitong.com/developers/models/google/gemini-3.8-flash-lite-tts.md) (`google/gemini-3.8-flash-lite-tts`): $0.111 / run
- [Gemini 3.8 Flash TTS](https://doitong.com/developers/models/google/gemini-3.8-flash-tts.md) (`google/gemini-3.8-flash-tts`): $0.045 / run
- [Async Text to Speech Pro V1.0](https://doitong.com/developers/models/async/tts-pro/v1.0.md) (`async/tts-pro/v1.0`): $0.01 / 1000 characters
- [Bytedance Seed Speech Text to Speech](https://doitong.com/developers/models/bytedance/seed-speech/tts/v2.md) (`bytedance/seed-speech/tts/v2`): $0.03 / 1000 characters
- [Chatterbox · Speech to Speech](https://doitong.com/developers/models/chatterbox/speech-to-speech.md) (`chatterbox/speech-to-speech`): $0.015 / minute of input audio

## Links

- HTML page: https://doitong.com/developers/models/gemini-tts
- All models and guides for AI agents: https://doitong.com/developers/llms.txt
- OpenAPI 3.1 with this model's typed request body: https://doitong.com/developers/openapi.json?model=gemini-tts
- Errors: https://doitong.com/developers/docs/errors
- Model details as JSON: https://api.doitong.com/v1/models/gemini-tts