Eleven v3

ElevenLabs

Generate multi-speaker dialogue audio from scripted text with voice and delivery controls.

Capability: Text to speech
Current price: $0.1400/1k chars
Availability: Ready to run
Last accepted verification: Not available

What this API does

Generate MP3 dialogue from ordered text-and-voice turns with Eleven v3. Keep each request at or below 2,000 total characters; split and stitch longer scripts agent-side.

Agents select this operation with tool ID elevenlabs.eleven-v3, then inspect its current executable contract before a run.

Public input and output shape

Input

inputsarray · required

Ordered dialogue turns; keep their combined text at or below 2,000 characters.

minItems: 1 · maxItems: 50

Output

charactersnumber

Returned characters value.

content_typestring

Returned content type value.

notestring

Returned note value.

speakersnumber

Returned speakers value.

Example request and output

This reviewed worked example is shared with inspect. Inspect also returns the current executable schema and price estimate before a paid run.

Request

{
  "tool_id": "elevenlabs.eleven-v3",
  "input": {
    "inputs": [
      {
        "text": "[brightly] Welcome to the audio edition.",
        "voice_id": "21m00Tcm4TlvDq8ikWAM"
      },
      {
        "text": "[warmly] Here are the three ideas worth your time.",
        "voice_id": "pNInz6obpgDQGcFmaJgB"
      }
    ]
  }
}

Output

{
  "note": "dialogue returned as an artifact",
  "speakers": 2,
  "characters": 90,
  "content_type": "audio/mpeg"
}

Teaching errors and limitations

invalid_input: total dialogue text must be at most 2,000 charactersSplit longer scripts into chunks of at most 2,000 characters and concatenate the MP3 artifacts agent-side.

Updated: 18 August 2026

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{ "tool_id": "elevenlabs.eleven-v3", "input": { "inputs": [ { "text": "[brightly] Welcome to the audio edition.", "voice_id": "21m00Tcm4TlvDq8ikWAM" }, { "text": "[warmly] Here are the three ideas worth your time.", "voice_id": "pNInz6obpgDQGcFmaJgB" } ] } }