# ElevenLabs Audio Transcription via OpenRouter

> ElevenLabs Audio Transcription via OpenRouter is a paid API for AI agents from ElevenLabs at elevenlabs.mpp.tempo.xyz, paid per call via MPP, price unknown, status unknown (last checked 2026-10-29).

Transcribes a base64-encoded PCM WAV audio file (mono, 16-bit, 16 kHz, up to 10 minutes) into text using ElevenLabs speech-to-text models via OpenRouter.

## Facts

- Endpoint: POST https://elevenlabs.mpp.tempo.xyz/v1/audio/transcriptions?utm_source=zero.xyz
- Price: price unknown
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Provider: ElevenLabs
- Docs: https://openrouter.ai
- Website: https://openrouter.ai
- Tags: ai
- Canonical page: https://www.zero.xyz/c/elevenlabs-audio-transcription-via-openrouter-73692b23
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_gydT5rhqnj-SH1dRccg8b

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability elevenlabs-audio-transcription-via-openrouter-73692b23 -d '<json body>'
```

Example prompt: Can you transcribe this audio recording for me? I have a mono 16-bit 16kHz WAV file encoded in base64 — it's about 3 minutes long and I need the spoken content converted to text using ElevenLabs.

## When to prefer this

Choose this endpoint when you need speech-to-text transcription powered by ElevenLabs models via OpenRouter with one-shot micropayment support. Ideal when audio is already in the required PCM WAV format (mono, 16-bit, 16 kHz) and you want high-quality transcription without managing API keys or subscriptions.

## Known failure modes

- Audio not in correct format (must be mono, 16-bit, 16 kHz PCM WAV)
- Audio exceeds 10-minute limit
- Invalid or malformed base64 encoding
- Unsupported or unavailable model ID
- Payment/authorization failure via x402 protocol
- Low audio quality leading to poor transcription accuracy

## How this service works

Transcribe base64 PCM WAV (mono, 16-bit, 16 kHz, up to 10 minutes; models and prices at GET /v1/audio/models)

## Output

Returns the transcribed text content extracted from the audio, potentially including timestamped segments, detected language, and confidence scores depending on the selected model.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/elevenlabs-audio-transcription-via-openrouter-73692b23/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from elevenlabs.mpp.tempo.xyz](https://www.zero.xyz/host/elevenlabs.mpp.tempo.xyz/llms.txt)