AI Rate Card

OpenAI: GPT 4o Transcribe Diarize · ofox

GPT-4o Transcribe is OpenAI's high-quality speech-to-text model built on GPT-4o audio capabilities. It's priced per token (input and output), making it suitable for workflows that benefit from token-level billing transparency.

Base modelAll models on this baseAll models of the providerto the provider

Input, $/1M $2.50

Output, $/1M $10.00

Context 128 000

Max output 128 000

Accepts audio, text

Last checked 04.11.2026 12:00:14 UTC

Source provider's page

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API

OpenAI-compatible API: the official OpenAI SDKs work with this base URL. Replace YOUR_API_KEY with your key from the provider.

API base URL
https://api.ofox.ai/v1
Endpoint
https://api.ofox.ai/v1/audio/transcriptions
Model id
openai/gpt-4o-transcribe-diarize
curl
curl https://api.ofox.ai/v1/audio/transcriptions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -F "model=openai/gpt-4o-transcribe-diarize" -F "file=@audio.mp3"
Python
import requests

r = requests.post(
    "https://api.ofox.ai/v1/audio/transcriptions",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    data={"model": "openai/gpt-4o-transcribe-diarize"},
    files={"file": open("audio.mp3", "rb")},
)
print(r.json())
JavaScript
const form = new FormData();
form.append("model", "openai/gpt-4o-transcribe-diarize");
form.append("file", fileInput.files[0]);
const r = await fetch("https://api.ofox.ai/v1/audio/transcriptions", {
  method: "POST",
  headers: {Authorization: "Bearer YOUR_API_KEY"},
  body: form,
});
console.log(await r.json());
Request (JSON)
{
  "model": "openai/gpt-4o-transcribe-diarize",
  "file": "@audio.mp3"
}
Response (JSON)
{
  "text": "Hello!"
}

The address is taken from the provider's model list; check it against the provider's documentation.

Provider's API documentation

Source: AI Rate Card, https://airatecard.com/en/c/offer%3Aofox%7Copenai/gpt-4o-transcribe-diarize, prices checked 2026-11-04; seller's page: https://ofox.ai/models/openai/gpt-4o-transcribe-diarize

Technical details

ID: offer:ofox|openai/gpt-4o-transcribe-diarize