# Gemini 3.8 Flash TTS

> Generate expressive multi-speaker speech with Gemini 3.8 Flash TTS. Studio-grade voice fidelity and long-form stability. Try free, pay per use.

## Overview

- **Eindpunt**: `POST https://api.muapi.ai/api/v1/gemini-3-8-flash-tts`
- **Model ID**: `gemini-3-8-flash-tts`
- **Categorie**: AI Audio
- **Variant**: 3.8 Flash
- **Familie**: gemini-tts
- **Cost**: 0.015 credits per call (some modellen compute cost dynamically based on params)

## API Usage

MuApi gebruikt het patroon **verzenden-dan-poll**: dien een taak in, verkrijg een `request_id` en peil vervolgens het eindpunt van de voorspellingen totdat `status` `voltooid` is. Optioneel kunt u `?webhook=YOUR_URL` doorgeven bij de submission-aanroep om een ​​POST-callback te ontvangen wanneer de taak is voltooid (polling overslaan).

**Authenticatie**: stuur uw MuApi-sleutel in de `x-api-key` header. Koop er een op https://muapi.ai/access-keys.

### 1. Submit a job

```http
POST https://api.muapi.ai/api/v1/gemini-3-8-flash-tts
Content-Type: application/json
x-api-key: YOUR_API_KEY
```

**Minimum (alleen vereist):**

```json
{
  "speakers": [
    {
      "speaker_id": "Speaker 1",
      "voice_name": "Fenrir",
      "audio_profile": "A stern and weary gatekeeper",
      "accent": "British (RP)",
      "style": "Deadpan",
      "pace": "Natural"
    },
    {
      "speaker_id": "Speaker 2",
      "voice_name": "Puck",
      "audio_profile": "A determined and courageous traveler seeking answers.",
      "accent": "American (Gen)",
      "style": "Empathetic",
      "pace": "Staccato"
    }
  ],
  "dialogue_turns": [
    {
      "speaker_id": "Speaker 1",
      "text": "[shouting] Halt, traveler! The northern pass is sealed by order of the council."
    },
    {
      "speaker_id": "Speaker 2",
      "text": "[determination] I carry a message for the elder. Step aside, or I will force my way through."
    },
    {
      "speaker_id": "Speaker 1",
      "text": "[caution] No one passes. [pensive] The elder is... he's no longer receiving visitors."
    },
    {
      "speaker_id": "Speaker 2",
      "text": "It's too late. [whispers] The shadow... it reached him first. [urgency] You need to leave. [shouting] Now."
    }
  ]
}
```

**Volledig voorbeeld (alle parameters):**

```json
{
  "speakers": [
    {
      "speaker_id": "Speaker 1",
      "voice_name": "Fenrir",
      "audio_profile": "A stern and weary gatekeeper",
      "accent": "British (RP)",
      "style": "Deadpan",
      "pace": "Natural"
    },
    {
      "speaker_id": "Speaker 2",
      "voice_name": "Puck",
      "audio_profile": "A determined and courageous traveler seeking answers.",
      "accent": "American (Gen)",
      "style": "Empathetic",
      "pace": "Staccato"
    }
  ],
  "dialogue_turns": [
    {
      "speaker_id": "Speaker 1",
      "text": "[shouting] Halt, traveler! The northern pass is sealed by order of the council."
    },
    {
      "speaker_id": "Speaker 2",
      "text": "[determination] I carry a message for the elder. Step aside, or I will force my way through."
    },
    {
      "speaker_id": "Speaker 1",
      "text": "[caution] No one passes. [pensive] The elder is... he's no longer receiving visitors."
    },
    {
      "speaker_id": "Speaker 2",
      "text": "It's too late. [whispers] The shadow... it reached him first. [urgency] You need to leave. [shouting] Now."
    }
  ],
  "scene": "",
  "sample_context": "",
  "temperature": 1
}
```

**Response:**

```json
{
  "request_id": "abc123",
  "status": "processing"
}
```

### 2. Poll voor het resultaat

```http
GET https://api.muapi.ai/api/v1/predictions/{request_id}/result
x-api-key: YOUR_API_KEY
```

Mogelijke `status`-waarden: `in wachtrij geplaatst`, `in behandeling`, `verwerking`, `voltooid`, `mislukt`, `geannuleerd`. Poll elke 2-5 seconden tot de terminal. Wanneer 'voltooid', bevinden de resultaat-URL's zich in de array 'outputs'.

**Voorbeeldreactie bij 'voltooid':**

```json
{
  "id": "abc123",
  "status": "completed",
  "outputs": [
    "https://cdn.muapi.ai/.../output.png"
  ],
  "urls": {
    "get": "https://api.muapi.ai/api/v1/predictions/abc123/result"
  },
  "created_at": "2026-05-08T12:34:56Z",
  "has_nsfw_contents": []
}
```

### krul

```bash
1. Submit
REQUEST_ID=$(curl -s -X POST https://api.muapi.ai/api/v1/gemini-3-8-flash-tts \
  -H "x-api-key: $MUAPI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"speakers":[{"speaker_id":"Speaker 1","voice_name":"Fenrir","audio_profile":"A stern and weary gatekeeper","accent":"British (RP)","style":"Deadpan","pace":"Natural"},{"speaker_id":"Speaker 2","voice_name":"Puck","audio_profile":"A determined and courageous traveler seeking answers.","accent":"American (Gen)","style":"Empathetic","pace":"Staccato"}],"dialogue_turns":[{"speaker_id":"Speaker 1","text":"[shouting] Halt, traveler! The northern pass is sealed by order of the council."},{"speaker_id":"Speaker 2","text":"[determination] I carry a message for the elder. Step aside, or I will force my way through."},{"speaker_id":"Speaker 1","text":"[caution] No one passes. [pensive] The elder is... he's no longer receiving visitors."},{"speaker_id":"Speaker 2","text":"It's too late. [whispers] The shadow... it reached him first. [urgency] You need to leave. [shouting] Now."}]}' | jq -r .request_id)

2. Poll tot voltooid
while :; do
  RESP=$(curl -s https://api.muapi.ai/api/v1/predictions/$REQUEST_ID/result -H "x-api-key: $MUAPI_API_KEY")
  STATUS=$(echo "$RESP" | jq -r .status)
  [ "$STATUS" = "completed" ] && echo "$RESP" | jq .outputs && break
  [ "$STATUS" = "failed" ] && echo "$RESP" && exit 1
  sleep 3
done
```

### Python

```python
import os, time, requests

API = "https://api.muapi.ai/api/v1"
headers = {"x-api-key": os.environ["MUAPI_API_KEY"]}

r = requests.post(f"{API}/gemini-3-8-flash-tts", headers=headers, json={"speakers":[{"speaker_id":"Speaker 1","voice_name":"Fenrir","audio_profile":"A stern and weary gatekeeper","accent":"British (RP)","style":"Deadpan","pace":"Natural"},{"speaker_id":"Speaker 2","voice_name":"Puck","audio_profile":"A determined and courageous traveler seeking answers.","accent":"American (Gen)","style":"Empathetic","pace":"Staccato"}],"dialogue_turns":[{"speaker_id":"Speaker 1","text":"[shouting] Halt, traveler! The northern pass is sealed by order of the council."},{"speaker_id":"Speaker 2","text":"[determination] I carry a message for the elder. Step aside, or I will force my way through."},{"speaker_id":"Speaker 1","text":"[caution] No one passes. [pensive] The elder is... he's no longer receiving visitors."},{"speaker_id":"Speaker 2","text":"It's too late. [whispers] The shadow... it reached him first. [urgency] You need to leave. [shouting] Now."}]})
request_id = r.json()["request_id"]

while True:
    res = requests.get(f"{API}/predictions/{request_id}/result", headers=headers).json()
    if res["status"] == "completed":
        print(res["outputs"]); break
    if res["status"] == "failed":
        raise RuntimeError(res.get("error")); 
    time.sleep(3)
```

## Input Schema

De API accepteert de volgende invoerparameters:

- **`speakers`** (`array`, _required_):
  . Identiteitskaart.
  - **`speakers[].speaker_id`** (`string`, _required_): . "Luidspreker N" ("Luidspreker 1").
  - **`speakers[].voice_name`** (`string`, _required_): Tweeling.
    - Options: `"Achernar"`, `"Achird"`, `"Algenib"`, `"Algieba"`, `"Alnilam"`, `"Aoede"`, `"Autonoe"`, `"Callirrhoe"`, `"Charon"`, `"Despina"`, `"Enceladus"`, `"Erinome"`, `"Fenrir"`, `"Gacrux"`, `"Iapetus"`, `"Kore"`, `"Laomedeia"`, `"Leda"`, `"Orus"`, `"Puck"`, `"Pulcherrima"`, `"Rasalgethi"`, `"Sadachbia"`, `"Sadaltager"`, `"Schedar"`, `"Sulafat"`, `"Umbriel"`, `"Vindemiatrix"`, `"Zephyr"`, `"Zubenelgenubi"`
  - **`speakers[].audio_profile`** (`string`, _optional_): Optional natural-language description of the persona, e.g. "A warm and soothing narrator".
  - **`speakers[].accent`** (`string`, _required_): voor verzoek-/poll-workflows en door de server verzonden gebeurtenissen
    - Default: `"Neutral"`
    - Options: `"Neutral"`, `"American (Gen)"`, `"American (Valley)"`, `"American (South)"`, `"British (RP)"`, `"British (Brixton)"`, `"Transatlantic"`, `"Australian"`
  - **`speakers[].style`** (`string`, _required_): voor verzoek-/poll-workflows en door de server verzonden gebeurtenissen
    - Default: `"Empathetic"`
    - Options: `"Vocal Smile"`, `"Newscaster"`, `"Whisper"`, `"Empathetic"`, `"Promo/Hype"`, `"Deadpan"`
  - **`speakers[].pace`** (`string`, _required_): voor verzoek-/poll-workflows en door de server verzonden gebeurtenissen
    - Default: `"Natural"`
    - Options: `"Natural"`, `"Rapid Fire"`, `"The Drift"`, `"Staccato"`

- **`dialogue_turns`** (`array`, _required_):
  . luidspreker_id . [schreeuwt] [fluistert] .
  - **`dialogue_turns[].speaker_id`** (`string`, _required_): ID ("Luidspreker 1") .
  - **`dialogue_turns[].text`** (`string`, _required_): . compatibel met. 10000 .

- **`scene`** (`string`, _optional_):
  Optional scene description that sets the acoustic setting, e.g. "A quiet, warm room with a fireplace crackling softly."
  - Default: `""`

- **`sample_context`** (`string`, _optional_):
  Optional overall tone/style, e.g. "Audiobook style narration. Tone is gentle and inviting."
  - Default: `""`

- **`temperature`** (`number`, _optional_):
  (0-2). , .
  - Default: `1`
  - Range: `0` to `2`

## Resultaat Schema

Het polling-eindpunt retourneert de volgende velden:

- **`id`** (`string`): De aanvraag-ID.
- **`status`** (`string`): Eén van de opties 'in wachtrij', 'in behandeling', 'bezig met verwerken', 'voltooid', 'mislukt', 'geannuleerd'.
- **`outputs`** (`array`): URL's naar gegenereerde afbeeldingen/video's/audio. Leeg totdat `status` `voltooid` is.
- **`urls.get`** (`string`): Zelfkoppeling om deze voorspelling opnieuw op te halen.
- **`error`** (`string` | `null`): Foutmelding als `status` `mislukt` is.
- **`created_at`** (`string`): ISO-8601-tijdstempel van het moment waarop de aanvraag is gemaakt.
- **`has_nsfw_contents`** (`array of boolean`): NSFW-detectievlaggen per uitgang.

## Webhooks (optional)

Voeg `?webhook=https://uw-server/pad` toe aan de verzend-URL. Wanneer de taak een eindstatus bereikt, POST MuApi dezelfde vorm als het polling-antwoord op uw URL - geen polling nodig.

## Agent Integration

MuApi levert een MCP-server en CLI zodat agenten (Claude Code, Cursor, aangepast) dit eindpunt kunnen aanroepen zonder HTTP-code te schrijven:

```bash
# Installeer de CLI
npm install -g muapi-cli

# Authenticate once
muapi auth login

# Expose all MuApi modellen as MCP tools to your agent
muapi mcp serve
```

De MCP-server stelt tools beschikbaar die verzend + poll voor elk model inpakken, inclusief `gemini-3-8-flash-tts`. Zie `muapi --help` voor categoriespecifieke snelkoppelingen (`muapi image genereren`, `muapi video from-image`, etc.).

## Related Models
- [3.1 Flash](https://muapi.ai/nl/playground/gemini-3-1-flash-tts)
- [2.5 Pro](https://muapi.ai/nl/playground/gemini-2-5-pro-tts)
- [3.8 Flash Lite](https://muapi.ai/nl/playground/gemini-3-8-flash-lite-tts)
- [3.8 Flash](https://muapi.ai/nl/playground/gemini-3-8-flash-tts)

## Bronnen
- [Playground Page](https://muapi.ai/nl/playground/gemini-3-8-flash-tts)
- [API Reference](https://muapi.ai/nl/playground/gemini-3-8-flash-tts/api)
- [Global llms.txt](https://muapi.ai/nl/llms.txt)