Voice isolation

Live

Send an audio or video link. Get the voice back on its own, with the background noise, music and room echo removed: clean speech for videos, podcasts and interviews.

$0.13 per minuteFailed runs are not charged.

Voice isolation

Input

Audio or videoaudio_urlA public https link to the audio or video file.

harbour-noisy-input-135c1c1f.mp3Reading the length…

$0.13 per started minute.

Example

Example outputMade with these inputs

Voice isolation

0:00 / 0:00

How it works

01Send the fileAn https link to an MP3, WAV, M4A, MP4, MOV or WEBM.
02We isolate the voiceNoise, music and echo taken out.
03Get the audioBilled per started minute.

Call Voice isolation from your code

One endpoint and one key, on the same balance as the playground. The request below is the example's own.

POSThttps://api.opennan.com/v1/audio/isolations

Get an API key
Create a key in the console. It uses the same balance as the playground.
Create a key

Send your first request

The same request the playground sends. Set OPENNAN_KEY to your key.

curl https://api.opennan.com/v1/audio/isolations \
  -H "Authorization: Bearer $OPENNAN_KEY" \
  -H "Content-Type: application/json" \
  -d '{"audio_url":"https://cdn.opennan.com/examples/voice-isolation/harbour-noisy-input-135c1c1f.mp3"}'

# Then poll until "status" is "succeeded" or "failed":
curl https://api.opennan.com/v1/tasks/<task id> -H "Authorization: Bearer $OPENNAN_KEY"

Poll the task
The call answers right away with a task id. Ask for the task until it finishes:
GEThttps://api.opennan.com/v1/tasks/{id}
queued
Waiting for a worker
running
Being made
succeeded
Done: outputs[].url holds the files
failed
Failed: you are not charged

Errors and how to fix them

401Missing or wrong key
Send the header Authorization: Bearer with a key from the console.
402Balance too low
Add credit in Billing, then send the same call again.
400A value is not accepted
Read error.message: it names the field. Use a value from the parameter table.
429Too many requests
Wait a few seconds and try again, waiting longer after each 429.

Add Opennan to your AI app

One install gives your AI every Opennan tool: video, images, chat, voice, music, sound effects, 3D, captions and dubbing. Pick your app and follow the steps.

MCP serverhttps://api.opennan.com/v1/mcp

Works in the Codex CLI, the Codex app and the Codex IDE extension: they share ~/.codex/config.toml. If the app or IDE does not see OPENNAN_KEY, use the config.toml option with your key in it. Codex asks before each tool call: approve it to go on.

Get an API key
Create a key in the console. It starts with sk- and uses the same balance as the website.
Create a key

Save your key as OPENNAN_KEY

# macOS / Linux (zsh shown; bash: ~/.bashrc)
echo 'export OPENNAN_KEY="sk-..."' >> ~/.zshrc
source ~/.zshrc

# Windows (PowerShell), then open a new terminal
setx OPENNAN_KEY "sk-..."

3
Install the Opennan plugin: the server plus a skill that teaches your AI to pick models, confirm prices and wait for results
```
codex plugin marketplace add Opennan/opennan-ai-plugin
codex plugin add opennan@opennan
```

Or add only the server

codex mcp add opennan --url https://api.opennan.com/v1/mcp --bearer-token-env-var OPENNAN_KEY

Or add this to ~/.codex/config.toml

[mcp_servers.opennan]
url = "https://api.opennan.com/v1/mcp"
http_headers = { Authorization = "Bearer sk-..." }

4
Check that opennan is listed
```
codex mcp list
```
Restart Codex, then ask for anything
“Make a 5 second video of rain on a neon street, a song to go with it and a poster image.”

Replace sk-... with your own key and keep it private: anyone who has it can spend your balance. Your app can list the tools before you add a key; making anything needs one.

This tool from your AI

Once Opennan is added, your AI calls this tool with arguments like these.

Tool: isolate_voice
Example arguments: { "audio_url": "https://cdn.opennan.com/examples/voice-isolation/harbour-noisy-input-135c1c1f.mp3" }

Voice isolation: questions

How much does Voice isolation cost?

$0.13 per minute. The Run button shows the exact price for your input before you start.

How do I call it from my code?

Send POST https://api.opennan.com/v1/audio/isolations with your API key. It answers with a task id: ask https://api.opennan.com/v1/tasks/{id} until the task succeeds or fails.

Can my AI agent use it?

Yes. Add the MCP server https://api.opennan.com/v1/mcp and call the isolate_voice tool, or point your agent at https://api.opennan.com/llms.txt.

What happens if a run fails?

A failed run is not charged. You pay only for results.

Voice isolation

Input

Output

How it works

Call Voice isolation from your code

Get an API key

Send your first request

Poll the task

Errors and how to fix them

Add Opennan to your AI app

This tool from your AI

Voice isolation: questions