AI Rate Card

Price, $ $0.002167 / minute

Context —

Accepts —

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.stepfun.ai/v1
Endpoint
https://api.stepfun.ai/v1/audio/transcriptions
Model id
step-asr
curl
curl https://api.stepfun.ai/v1/audio/transcriptions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -F "model=step-asr" -F "file=@audio.mp3"
Python
import requests

r = requests.post(
    "https://api.stepfun.ai/v1/audio/transcriptions",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    data={"model": "step-asr"},
    files={"file": open("audio.mp3", "rb")},
)
print(r.json())
JavaScript
const form = new FormData();
form.append("model", "step-asr");
form.append("file", fileInput.files[0]);
const r = await fetch("https://api.stepfun.ai/v1/audio/transcriptions", {
  method: "POST",
  headers: {Authorization: "Bearer YOUR_API_KEY"},
  body: form,
});
console.log(await r.json());
Request (JSON)
{
  "model": "step-asr",
  "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%3Astepfun-ai%7Cstep-asr, prices checked 2026-11-04; seller's page: https://stepfun.ai

Technical details

ID: offer:stepfun-ai|step-asr