GET

/v1/schemas/fal/audio/elevenlabs/tts/eleven-v4-turbo

kind inputactivity audiohash 041fab02…extracted Nov 8, 2026version currentsource upstream spec ↗
fieldrecorded source
schemaSource linked above.

upstream-spec

Source trace
df2cb81ff4161177ef72ad057c5f5ef10a5677a3ad8f3b20a97d190fe79f3cd1
{
  "fetchedAt": 1794114001,
  "extractorVersion": "2",
  "verifiedAt": null
}

Request body

10 properties · 1 required · 0 $defs
propertytypedescriptionconstraints
text*stringThe text to convert to speech. Supports audio tags such as [whispering] and IPA pronunciation enclosed in forward slashes.length ≥ 1 · length ≤ 5000
enable_safety_checkerbooleanCheck input content for safety. Disabling requires account authorization.default: true
timestampsbooleanWhether to return character-level timing information with the generated audio.default: false
seedintegerSeed for best-effort reproducibility. Identical output is not guaranteed.0 ≤ n ≤ 4294967295 · nullable
apply_text_normalizationenumWhether to normalize text such as numbers and dates before generation.auto | on | off · default: "auto"
language_codestringLanguage code (ISO 639-1) for speech generation and text normalization.nullable
voicestringThe voice to use for speech generationdefault: "Rachel"
output_formatenumOutput format of the generated audio. Formatted as codec_sample_rate_bitrate.mp3_22050_32 | mp3_44100_32 | mp3_44100_64 | mp3_44100_96 | mp3_44100_128 | mp3_44100_192 · +13 more · default: "mp3_44100_128"
similarity_boostnumberHow closely the output follows the reference voice. Higher values increase similarity but may reduce naturalness.0 ≤ n ≤ 1 · default: 0.75
stabilitynumberVoice stability. Lower values allow more expressive delivery; higher values make delivery more consistent.0 ≤ n ≤ 1 · default: 0.5

Validate a payload

before you spend tokens
shell
$ curl -X POST https://modelschemas.com/v1/validate \
    -d '{"provider":"fal","endpointId":"elevenlabs/tts/eleven-v4-turbo","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}