ElevenLabs · fal.ai · Speech to speech
Voice Changer
ElevenLabs Voice Changer, speech to speech, served by fal.ai. The OpenAPI schema for the fal-ai/elevenlabs/voice-changer queue. Price: $0.30 per minute of input audio, metered by fal after the call (x-fal-billable-units) and billed at that reading; the reservation is the bound you declare and the difference is refunded.
$0.3 / unitfal.aiAudiofal/elevenlabs-voice-changerListed
Activation pending; your agent will see it as unavailable until then.
Use this tool with your agent
Give this to your agent
Use my connected Agentik MCP server. I want to use the tool fal/elevenlabs-voice-changer (ElevenLabs Voice Changer, speech to speech). Call inspect_tool with {"tool_id": "fal/elevenlabs-voice-changer"} first and tell me the price before anything runs. Ask me for the inputs it needs; never invent values, IDs or file URLs. When I confirm, call run_tool with tool_id "fal/elevenlabs-voice-changer" and my inputs, follow it with get_run if it is still running, and give me the result and the price Agentik reports. If the tool is unavailable, say so and use discover_tools to propose an alternative.Show the prompt
Paste it into Claude, ChatGPT or Codex: your agent takes it from there, and shows the price before it runs.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
output_format | string | No | Output format of the generated audio. Formatted as codec_sample_rate_bitrate. Options: mp3_22050_32, mp3_44100_32, mp3_44100_64, mp3_44100_96, mp3_44100_128, mp3_44100_192, pcm_8000, pcm_16000, pcm_22050, pcm_24000, pcm_44100, pcm_48000. |
voice | string | No | The voice to use for speech generation |
audio_url | string | Yes | The input audio file |
seed | integer | No | Random seed for reproducibility. |
remove_background_noise | boolean | No | If set, will remove the background noise from your audio input using our audio isolation model. |
max_minutes | number | No | Upper bound of the input audio length, in minutes (default 10, max 60). The reservation is this bound at the unit price; after the call the minutes fal meters are billed and the rest is refunded. Declare at least the real amount: a larger input is still processed but is never billed above the reservation. |
How your agent calls it
First inspect_tool for the current schema and price, then run_tool with the published example after confirming your inputs:
{
"tool_id": "fal/elevenlabs-voice-changer",
"input": {
"audio_url": "https://storage.googleapis.com/falserverless/example_inputs/elevenlabs/voice_change_in.mp3",
"max_minutes": 1
}
}Price and billing
- Price
- $0.3 / unit
- Model
- Per unit
- Detail
- The provider’s price, with no markup. Billed for measured usage.
- The provider’s price, 0% markup.
- One prepaid balance for every provider; your agent sees the price before it runs.
- Pay for measured usage; unused reservations are released.