<!-- GENERATED BY scripts/gen_vendor_hubs.py; DO NOT EDIT -->
# StepFun API access: models, pricing, and one OpenAI-compatible key

> Call StepFun models through one OpenAI-compatible ChinaAPI key. Compare task type, context and published USD pricing, then start without a mainland-China account or phone number.

- Canonical: https://chinaapi.ai/vendors/stepfun/
- Updated: 2026-08-10
- Vendor: StepFun
- Models on ChinaAPI: 15
- Model families: StepFun
- Base URL: `https://api.chinaapi.ai/v1`
- Account requirement: no mainland-China account or phone number

## Availability

The vendor's own console requires a mainland-China entity or phone number to register.
ChinaAPI exposes the same models through one OpenAI-compatible gateway account.
This page states availability, task type, context and published USD price only; it makes
no quality or ranking claim, because no published benchmark evidence supports one yet.

## Catalog

| Model | Family | Task type | Context | Price (USD) |
| --- | --- | --- | --- | --- |
| [step-1o-audio](https://chinaapi.ai/models/step-1o-audio/) | StepFun | Audio and text | — | $3.85/M input, $9.24/M output tokens |
| [step-1o-turbo-vision](https://chinaapi.ai/models/step-1o-turbo-vision/) | StepFun | Text, image and video input | 32K | $0.4/M input, $1.28/M output tokens |
| [step-2x-large](https://chinaapi.ai/models/step-2x-large/) | StepFun | Image generation | — | $0.0155 per image |
| [step-3.5-flash](https://chinaapi.ai/models/step-3.5-flash/) | StepFun | Text | 256K | $0.1/M input, $0.3/M output tokens |
| [step-3.5-flash-2603](https://chinaapi.ai/models/step-3.5-flash-2603/) | StepFun | Text | 256K | $0.1/M input, $0.3/M output tokens |
| [step-3.7-flash](https://chinaapi.ai/models/step-3.7-flash/) | StepFun | Text and image input | 256K | $0.2/M input, $1.15/M output tokens |
| [step-asr](https://chinaapi.ai/models/step-asr/) | StepFun | Speech to text | — | $0.15 per audio hour |
| [step-asr-1.1](https://chinaapi.ai/models/step-asr-1.1/) | StepFun | Speech to text | — | $0.35 per audio hour |
| [step-image-edit-2](https://chinaapi.ai/models/step-image-edit-2/) | StepFun | Image generation | — | $0.0035 per image |
| [step-tts-2](https://chinaapi.ai/models/step-tts-2/) | StepFun | Text to speech | 1,000 characters/request | $0.4 per 10k characters |
| [step-tts-mini](https://chinaapi.ai/models/step-tts-mini/) | StepFun | Text to speech | 1,000 characters/request | $0.15 per 10k characters |
| [stepaudio-2-asr-pro](https://chinaapi.ai/models/stepaudio-2-asr-pro/) | StepFun | Speech to text | — | $0.35 per audio hour |
| [stepaudio-2.5-asr](https://chinaapi.ai/models/stepaudio-2.5-asr/) | StepFun | Speech to text | Streaming audio input | $0.022 per audio hour |
| [stepaudio-2.5-chat](https://chinaapi.ai/models/stepaudio-2.5-chat/) | StepFun | Audio and text | — | $1.5/M input, $3.5/M output tokens |
| [stepaudio-2.5-tts](https://chinaapi.ai/models/stepaudio-2.5-tts/) | StepFun | Text to speech | 1,000 characters/request | $0.85 per 10k characters |

## Endpoints

- `step-1o-audio`: `POST https://api.chinaapi.ai/v1/chat/completions`
- `step-1o-turbo-vision`: `POST https://api.chinaapi.ai/v1/chat/completions`
- `step-2x-large`: `POST https://api.chinaapi.ai/v1/images/generations`
- `step-3.5-flash`: `POST https://api.chinaapi.ai/v1/chat/completions`
- `step-3.5-flash-2603`: `POST https://api.chinaapi.ai/v1/chat/completions`
- `step-3.7-flash`: `POST https://api.chinaapi.ai/v1/chat/completions`
- `step-asr`: `POST https://api.chinaapi.ai/v1/audio/transcriptions`
- `step-asr-1.1`: `POST https://api.chinaapi.ai/v1/audio/transcriptions`
- `step-image-edit-2`: `POST https://api.chinaapi.ai/v1/images/generations`
- `step-tts-2`: `POST https://api.chinaapi.ai/v1/audio/speech`
- `step-tts-mini`: `POST https://api.chinaapi.ai/v1/audio/speech`
- `stepaudio-2-asr-pro`: `POST https://api.chinaapi.ai/v1/audio/transcriptions`
- `stepaudio-2.5-asr`: `POST https://api.chinaapi.ai/v1/audio/transcriptions`
- `stepaudio-2.5-chat`: `POST https://api.chinaapi.ai/v1/chat/completions`
- `stepaudio-2.5-tts`: `POST https://api.chinaapi.ai/v1/audio/speech`

Token prices are shown as input and output per one million tokens.
Media prices are shown per published billing unit.

Token-model rates are synchronized from the gateway and may follow providers' official China list prices where configured. Live pricing 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.

## Quickstart

```
curl -X POST https://api.chinaapi.ai/v1/chat/completions \
  -H "Authorization: Bearer $CHINAAPI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "step-1o-audio",
    "messages": [{"role": "user", "content": "Hello from ChinaAPI"}]
  }'
```

## Other vendor hubs

- [ByteDance models on ChinaAPI](https://chinaapi.ai/vendors/bytedance/)
- [Tencent models on ChinaAPI](https://chinaapi.ai/vendors/tencent/)
- [Meituan models on ChinaAPI](https://chinaapi.ai/vendors/meituan/)
- [Xiaomi models on ChinaAPI](https://chinaapi.ai/vendors/xiaomi/)
- [Kuaishou models on ChinaAPI](https://chinaapi.ai/vendors/kuaishou/)

Generated from the ChinaAPI model catalog on August 10, 2026. Live pricing in the dashboard is authoritative.
Sign up: https://dash.chinaapi.ai/register?lang=en&utm_source=chinaapi&utm_medium=vendor-md&utm_campaign=stepfun