# StepFun: stepaudio-2.5-asr — API on ChinaAPI

> StepAudio 2.5 ASR — a 4B MTP streaming transcription model for fast Chinese-English recognition, ITN normalization, subtitles, meetings, and voice agents.

- Canonical page: https://chinaapi-ru.com/models/stepaudio-2.5-asr/
- Model ID: `stepaudio-2.5-asr`
- Type: speech recognition (ASR)
- Modalities: Audio input, text output
- Capabilities: Audio, Speech-to-Text, Streaming, Chinese and English, ITN
- Billing: $0.0208 per audio hour (USD)
- Endpoint: `POST https://api.chinaapi-ru.com/v1/audio/transcriptions` (OpenAI-compatible transcription endpoint)
- Pricing basis: The displayed media rate may include a service margin covering provider input/output billing, payment processing, chargeback exposure, and operations. Any margin is included in the displayed rate and is not added separately.
- Access: no mainland-China account or phone number required; $2 free trial credit
- Sign up: https://dash.chinaapi-ru.com/register?utm_source=chinaapi&utm_medium=model-md&utm_campaign=stepaudio-2.5-asr

## Quickstart

```
curl -X POST https://api.chinaapi-ru.com/v1/audio/transcriptions \
  -H "Authorization: Bearer sk-..." \
  -F "model=stepaudio-2.5-asr" \
  -F "file=@meeting.wav" \
  -F "response_format=json"
```

## FAQ

**How do I use stepaudio-2.5-asr?**
Use stepaudio-2.5-asr through ChinaAPI with an API key and the OpenAI-compatible endpoint shown on this page.

**How much does stepaudio-2.5-asr cost?**
stepaudio-2.5-asr is $0.0208 per audio hour, paid in USD. The live pricing page is authoritative. The displayed media rate may include a service margin covering provider input/output billing, payment processing, chargeback exposure, and operations. Any margin is included in the displayed rate and is not added separately.

**Does stepaudio-2.5-asr need a Chinese account?**
No. ChinaAPI provides access without a mainland-China account or phone number and includes a $2 free trial. Check live pricing for the displayed USD rate.

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