Gemini 3.8 Flash TTS API：价格、参数与代码

Name: Gemini 3.8 Flash TTS API
SKU: google/gemini-3.8-flash-tts/text-to-speech
Price: 0.0005 USD
Availability: InStock

请求参数

参数	必填	说明
`pace`	否	Rhythm of the reading. Omit it to keep the voice's own rhythm. natural · rapid_fire · the_drift · staccato
`text`	否	The words to be spoken, exactly as written. Direction such as [whispering] or [sighs] goes into the text itself.
`scene`	否	Where and to whom the words are spoken. Shapes the delivery and is not spoken.
`style`	否	预设的风格或曲风。 whisper · empathetic · vocal_smile · newscaster · promo_hype · deadpan
`accent`	否	English accent used for the reading. neutral · american_general · american_valley · american_south · british_rp · british_brixton · transatlantic · australian
`dialogue`	否	A scripted conversation, used instead of text: each line names a speaker from speakers.
`speakers`	否	The cast for dialogue: one or two voices, each with a name the lines refer to.
`voice_id`	否	从可用音色里挑一个。 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 · 默认值: Kore
`temperature`	否	Variation between takes; higher is less predictable. ≥ 0 · ≤ 2
`instructions`	否	How to read the text: mood, distance from the microphone, who is listening. Shapes the delivery and is not spoken.

价格

价格以积分计，和网站上用的是同一种积分（1 积分 = $0.01）。任务受理时先冻结积分，完成后按实际费用结算；失败的任务会退还。

选项	积分 /秒	≈ 美元
标准	0.05	US$0.0005

想在运行前知道确切金额，把同样的请求体发到 POST /jobs/quote 即可。

API 快速上手

三步调用 Gemini 3.8 Flash TTS API

创建 API 密钥. 登录 PopNow，在 API 控制台创建密钥。密钥以 sk-popnow- 开头，和网站共用同一份积分。
发送请求. 向 POST /jobs/createTask 发请求，model 填 google/gemini-3.8-flash-tts/text-to-speech，input 按参数表填写。响应会立刻返回任务 ID。
取回结果. 用任务 ID 轮询 GET /jobs/recordInfo，或者传 callBackUrl，结果会推送到这个地址。任务成功后下载输出链接。

# 1. Create the task. Keep the Idempotency-Key if you retry after a network error.
export IDEMPOTENCY_KEY="$(uuidgen)"
curl -X POST https://api.popnow.ai/api/v1/jobs/createTask \
  -H "Authorization: Bearer $POPNOW_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $IDEMPOTENCY_KEY" \
  -d '{
  "model": "google/gemini-3.8-flash-tts/text-to-speech",
  "input": {
    "text": "Welcome back. Your files finished rendering a minute ago and are ready to download.",
    "voice_id": "Kore"
  }
}'

# 2. Copy data.taskId from the response, then poll until state is succeeded, failed, canceled or expired.
TASK_ID="TASK_ID_FROM_RESPONSE"
curl "https://api.popnow.ai/api/v1/jobs/recordInfo?taskId=$TASK_ID" \
  -H "Authorization: Bearer $POPNOW_API_KEY"

请把提示词和链接换成你自己的。API 页签里有响应、轮询和回调的参考。