Google: Gemini 3.8 Flash TTS

google-ai.voice-gen.gemini-3-8-flash-tts

Speak a text in one of 30 prebuilt voices, or a two-speaker dialogue, with Gemini 3.8 Flash TTS on Google's own API; the audio returns inline as base64 WAV (24 kHz mono).

Price: $0.05/successプロバイダー原価
Success rate: 99.9%Last 30 days · 41,722 calls
Latency p50: 2.9 sp95 11 s
Last verified: 2026/09/30Verified working

POSThttps://toolswitch.dev/v1/tools/google-ai.voice-gen.gemini-3-8-flash-ttsPreview

Try online近日公開Provider docs ↗

Uses platform quota
Synchronous response
Reads public data

パラメータ

パラメータ	型	必須	説明	例
パスパラメータ
`model`	文字列	必須		`gemini-3.8-flash-tts`

パスパラメータ
model文字列必須
例：gemini-3.8-flash-tts

コード例

$TOOLSWITCH_KEY をコンソールで作成したキーに置き換えてください。

Preview

curl -X POST 'https://toolswitch.dev/v1/tools/google-ai.voice-gen.gemini-3-8-flash-tts' \
  -H "X-Toolswitch-Key: $TOOLSWITCH_KEY" \
  -H "Content-Type: application/json" \
  --data-raw '{"contents":[{"parts":[{"text":"Say cheerfully: Welcome to treg, the tool catalog for your agents."}]}],"generationConfig":{"speechConfig":{"voiceConfig":{"prebuiltVoiceConfig":{"voiceName":"Kore"}}},"responseModalities":["AUDIO"]}}'

import os
import json
import requests

response = requests.request(
    "POST",
    "https://toolswitch.dev/v1/tools/google-ai.voice-gen.gemini-3-8-flash-tts",
    headers={"X-Toolswitch-Key": os.environ["TOOLSWITCH_KEY"]},
    json=json.loads("{\"contents\":[{\"parts\":[{\"text\":\"Say cheerfully: Welcome to treg, the tool catalog for your agents.\"}]}],\"generationConfig\":{\"speechConfig\":{\"voiceConfig\":{\"prebuiltVoiceConfig\":{\"voiceName\":\"Kore\"}}},\"responseModalities\":[\"AUDIO\"]}}"),
)
response.raise_for_status()
print(response.text)

const response = await fetch("https://toolswitch.dev/v1/tools/google-ai.voice-gen.gemini-3-8-flash-tts", {
  method: "POST",
  headers: {
    "X-Toolswitch-Key": process.env.TOOLSWITCH_KEY ?? "",
    "Content-Type": "application/json",
  },
  body: JSON.stringify(JSON.parse("{\"contents\":[{\"parts\":[{\"text\":\"Say cheerfully: Welcome to treg, the tool catalog for your agents.\"}]}],\"generationConfig\":{\"speechConfig\":{\"voiceConfig\":{\"prebuiltVoiceConfig\":{\"voiceName\":\"Kore\"}}},\"responseModalities\":[\"AUDIO\"]}}")),
});
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
console.log(await response.text());

このゲートウェイ API はプレビュー版です。URL や認証方式は変更される場合があります。パラメータはサンプルデータです。呼び出し料金は $0.05/success です。サービス料を含みます。