Skip to content

F5 TTS

Integrate

Model id f5-tts
# 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/f5-tts?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "gen_text": "Hello from Doitong. This is a short test sentence.",
    "ref_audio_url": "https://content.doitong.com/audio/showcase/v3/tools/dub_es.mp3",
    "model_type": "F5-TTS"
  }'

# 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"

This request: $0.003 3 API credits Run it on this page

Get API key
Open model Text to Speech Reference inputs #speech

Voice-cloning speech synthesis from a reference audio clip, using F5-TTS or E2-TTS

Open model · Audio

Your first result goes here

Build a request below and run it with your API key. Outputs are copied to our storage, kept forever or 7 days for free.

Build a request

Controls are generated from the model schema. The code and the price update as you change them.

•required

Text for speech synthesis, limited to 5000 characters.

•required
Drop a file, or

Reference audio file URL.

model_type •required

Model name for TTS synthesis.

Advanced ref_text · remove_silence
default

TTS reference text; leaving it out selects automatic generation through a speech-recognition model (ASR, Automatic Speech Recognition).

POST /run/f5-tts?wait=20 quote → $0.003
# 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/f5-tts?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "gen_text": "Hello from Doitong. This is a short test sentence.",
    "ref_audio_url": "https://content.doitong.com/audio/showcase/v3/tools/dub_es.mp3",
    "model_type": "F5-TTS"
  }'

# 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"

Run this request

Your key stays in this browser: it is sent only to the Doitong API and saved (localStorage) only if you tick Remember. Get an API key

About F5 TTS

Speaks `gen_text` (up to 5000 characters) in the voice of a reference clip given by `ref_audio_url`. `model_type` selects F5-TTS or E2-TTS. If `ref_text` is empty, speech recognition generates it. `remove_silence` is on by default.

Parameters

NameType DefaultAllowed Description
gen_textrequired
Typestring
Text for speech synthesis, limited to 5000 characters.
ref_audio_urlrequired
Typeurl · audio
Reference audio file URL.
ref_textoptional
Typestring
Default
TTS reference text; leaving it out selects automatic generation through a speech-recognition model (ASR, Automatic Speech Recognition).
model_typerequired
Typeenum
F5-TTSE2-TTS
Model name for TTS synthesis.
remove_silenceoptional
Typeboolean
Defaulttrue
Controls whether silence is removed from the audio file.
required

File parameters take a public https:// URL, a data: URI up to 10 MB, or the file_url of an upload. Files

Output

GET /requests/req_8k2m4q7x1z9c3v5b6n0p2r4t
{
  "id": "req_8k2m4q7x1z9c3v5b6n0p2r4t",
  "object": "request",
  "model": "f5-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": 3,
    "usd": "0.003",
    "charged": 3,
    "refunded": 0
  },
  "input": {
    "gen_text": "Hello from Doitong. This is a short test sentence.",
    "ref_audio_url": "https://content.doitong.com/audio/showcase/v3/tools/dub_es.mp3",
    "model_type": "F5-TTS"
  },
  "output": {
    "audio_url": {
      "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"
  }
}
Your files, your choiceEvery outputs[].url is a copy on our storage: kept forever (paid per GB-month) or 7 days for free, by your account setting or ?storage=.
Same shape on every modeltype, url, content_type, width, height and duration, for images, video and audio alike. output is the model’s own result object.
Fields of output
audio_url
object {url, content_type, file_name, file_size}Audio file with the synthesized speech.

For AI agents: this page as Markdown is at https://doitong.com/en-US/developers/models/f5-tts.md. All models and guides: https://doitong.com/developers/llms.txt