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Audio Transcription via Whisper Large v3 Turbo (Cloudflare Workers AI)
x402
Audio Transcription via Whisper Large v3 Turbo (Cloudflare Workers AI) is a paid API for AI agents from ai-policy-kit.moneymaker-ai.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-28).
Transcribes audio files to text using OpenAI Whisper Large v3 Turbo running on Cloudflare Workers AI, returning transcript, language, word count, and duration.
Price / call$0.005
Success—
StatusUnknown
How this service works
Generate an AI_POLICY.md and a pull request template with an AI-disclosure section for your open-source repo. Free, runs in your browser.
Output
Returns a JSON object containing the full transcript text, detected language code, word count, audio duration in seconds, the engine used (Whisper Large v3 Turbo on Cloudflare Workers AI), estimated neurons used, and a note that audio is not stored. Example output includes fields: text, language, word_count, duration_seconds, engine, neurons_estimated, note.
Example use cases
Podcast episode transcription
“Transcribe this podcast clip for me: https://example.com/episode42-clip.mp3 — I need the full text and want to know how long the audio is.”
Voice memo to meeting notes
“I recorded a voice memo of my meeting and uploaded it here: https://storage.example.com/voice-memo.wav — can you transcribe it into text so I can turn it into notes?”
Multilingual audio language detection
“Can you transcribe this audio file at https://example.com/foreign-speech.mp3 and tell me what language is being spoken?”
Technical details
Endpoint
GEThttps://ai-policy-kit.moneymaker-ai.workers.dev/api/ai/transcribe?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need fast, low-cost speech-to-text transcription for short audio clips (under 1 MB) via a public URL or base64, especially when you want Whisper Large v3 Turbo quality without managing your own infrastructure. Ideal for agents that need to process voice memos, short podcast clips, or interview snippets on demand. Not suited for long audio files or real-time streaming transcription.
Side effects
- Audio URL is not publicly accessible or returns a non-200 response
- Audio file exceeds 1 MB size limit
- Unsupported audio format
- Invalid base64 encoding if using audio_base64
- Language code is invalid or unsupported ISO format
- Network timeout fetching remote audio URL
- Transcription accuracy issues for heavy accents or noisy audio
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"note": "Machine transcription; may contain errors. Audio is not stored.",
"text": "they are hard, because that goal will serve to organize and measure the best of our energies and skills, because that challenge is one that we're willing to accept, one we are unwilling to postpone, and one we intend to win, and the others too.",
"engine": "@cf/openai/whisper-large-v3-turbo on Cloudflare Workers AI",
"language": "en",
"word_count": 45,
"duration_seconds": 20,
"neurons_estimated": 15.55
}
}Tags
x402
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