文字轉語音（同步）v2

V2 僅供既有客戶端維護，新接入使用 v3。

Endpoint

POST /api/open/v2/speech/tts

完整網址：

https://fishaudio.org/api/open/v2/speech/tts

驗證與請求標頭

Authorization: Bearer FISHAUDIO_API_KEY
Content-Type: application/json
X-Request-Id: YOUR_STABLE_REQUEST_ID

請求欄位

field	type	required	constraints
`text`	string	yes	1–10,000
`voiceId`	string	yes	must support `modelId`
`modelId`	string	no	public model ID
`format`	string	no	`mp3`, `wav`, `ogg`; default `mp3`
`speed`	number	no	0.5–2; default 1
`volume`	number	no	-20–20; default 0
`pitch`	number	no	-12–12
`stability`	number	no	0.5–1.5
`similarity`	number	no	0.5–1.5
`language`	string	no	1–64 characters in v3
`emotion`	string	no	1–64 characters in v3
`instruction`	string	no	up to 1,600 characters
`textNormalization`	boolean	no	structured-text normalization

V2 also accepts legacy engineModelId, version, qwenModel, and minimaxEmotion fields. Do not use them in new clients.

curl

curl "https://fishaudio.org/api/open/v2/speech/tts" \
  -H "Authorization: Bearer $FISHAUDIO_API_KEY" \
  -H "Content-Type: application/json" \
  -H "X-Request-Id: legacy-tts-001" \
  -d '{"text":"Hello","voiceId":"00a1b221-6137-4b73-ad62-b0cbce134167","modelId":"fishaudio-s21pro-flash","format":"mp3"}' --output speech.mp3

成功回應

成功時回傳音訊二進位。先檢查 HTTP 狀態與 Content-Type；錯誤為 JSON。

錯誤與重試

400 請求無效；401 金鑰無效；402 額度不足；404 不存在；409 冪等衝突；413 過大；429 限流；500 產生失敗。

Migration

既有 v1/v2 客戶端保持相容，新接入使用 v3。 Migration guide.