# GlianaAI GPT-4o Audio Transcription

> GlianaAI GPT-4o Audio Transcription is a paid API for AI agents from api.glianalabs.com, paid per call via x402, $0.03915/call, status unknown (last checked 2026-09-15).

Transcribes audio files to text using OpenAI's GPT-4o Whisper model, paid per call in USDC via x402

## Facts

- Endpoint: GET https://api.glianalabs.com/x402/gpt-4o-transcribe
- Price: $0.03915/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/glianaai-gpt-4o-audio-transcription-779a7e0f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_gOFYqo7NnctUA7u4d12A0

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 glianaai-gpt-4o-audio-transcription-779a7e0f
```

Example prompt: Transcribe this audio recording for me — here's the file URL: https://example.com/meeting.mp3 — it's in English, and keep the output focused and deterministic (temperature 0.2).

## When to prefer this

Choose this endpoint when you need keyless, pay-per-call audio transcription using GPT-4o's Whisper model without managing an OpenAI API key or subscription. Ideal for AI agents operating autonomously with a crypto wallet (USDC on Base, Tempo, or Solana) that need to transcribe audio on demand. Prefer over direct OpenAI API when you want x402 micropayment settlement and no prior signup.

## Known failure modes

- Unsupported audio format — only flac, mp3, mp4, mpeg, mpga, m4a, ogg, wav, webm are accepted
- File too large — files must be ≤40MB; use /v1/media upload endpoint first for large files
- Invalid data URI or inaccessible HTTPS URL — file must be publicly reachable
- Payment failure — insufficient USDC balance on Tempo, Base, or Solana wallet
- Language mismatch — prompt doesn't match audio language, reducing accuracy
- Audio quality too low — heavy noise or distortion may yield poor transcription

## How this service works

One endpoint for 90+ generative AI models, live market data, SEC filings and identity APIs — image, video, music, speech, LLM chat, crypto and FX rates, DEX liquidity, gas, US company fundamentals and insider trades, document OCR and face matching. Pay per request in USDC on Tempo, Base, Solana, Algorand or BNB Chain with no signup, or top up a prepaid balance in rupiah.

## Output

Returns a JSON object containing the model name used, an output object with the transcription text, and the cost charged in micro-USD for the call.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "properties": {}
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "model": "gpt-4o-transcribe",
  "output": {
   "url": "https://api.glianalabs.com/v1/media/<id>"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/glianaai-gpt-4o-audio-transcription-779a7e0f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.glianalabs.com](https://www.zero.xyz/host/api.glianalabs.com/llms.txt)