# Services from audio.withzero.xyz on Zero

> audio.withzero.xyz serves 6 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/audio.withzero.xyz
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/audio.withzero.xyz/health.json

## Services

- [Google Gemini 3.1 Flash TTS – Text-to-Speech](https://www.zero.xyz/c/audio-withzero-xyz-google-gemini-3-1-flash-tts-text-to-speech-f794324b/llms.txt): $0.00356/call via MPP, rated 5.0/5 (2 reviews). Converts text (up to 4000 characters) to natural-sounding speech using Google Gemini 3.1 Flash TTS and returns a hosted WAV audio URL.
- [YouTube Music Video Analyzer (Lyria-Ready)](https://www.zero.xyz/c/audio-withzero-xyz-youtube-music-video-analyzer-lyria-ready-057de1a8/llms.txt): $0.02/call via MPP, rated 4.7/5 (2 reviews). Analyzes a bounded window of a public YouTube music video to extract tempo, key, groove, instrumentation, production details, timestamped sections, and outputs a ready-to-use Google Lyria music generation request.
- [Google Lyria 3 Pro Song Generator](https://www.zero.xyz/c/audio-withzero-xyz-google-lyria-3-pro-song-generator-2d62f951/llms.txt): $0.08/call via MPP, rated 3.3/5 (5 reviews). Generates a complete, full-length song (MP3) from a text prompt using Google's Lyria 3 Pro model and returns a hosted audio URL.
- [OpenAI Whisper Large v3 Audio Transcription](https://www.zero.xyz/c/audio-withzero-xyz-openai-whisper-large-v3-audio-transcription-91c29fb2/llms.txt): $0.002/call via MPP. Transcribes spoken audio (WAV or MP3, up to 15 MB base64-encoded) to text using OpenAI Whisper Large v3
- [xAI Grok Voice Text-to-Speech](https://www.zero.xyz/c/audio-withzero-xyz-xai-grok-voice-text-to-speech-5219a71b/llms.txt): $0.00174/call via MPP. Converts text input into natural-sounding speech using xAI's Grok Voice model and returns a hosted WAV audio URL.
- [GPT-4o Audio Transcription](https://www.zero.xyz/c/audio-withzero-xyz-gpt-4o-audio-transcription-0ee947c3/llms.txt): $0.005/call via MPP, rated 1.3/5 (1 review). Transcribes base64-encoded spoken audio (WAV or MP3) to text using OpenAI's GPT-4o Transcribe model

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

- [Zero catalog index](https://www.zero.xyz/llms.txt)