# StepFun: step-2x-large — API on ChinaAPI

> StepFun Step 2X Large — text-to-image generation with realistic texture and strong Chinese and English text rendering inside the image itself. Supports 256x256, 512x512, 768x768, 1024x1024, 1280x800, and 800x1280; one image per request over the OpenAI-compatible images endpoint.

- Canonical page: https://chinaapi.ai/models/step-2x-large/
- Model ID: `step-2x-large`
- Type: image generation
- Capabilities: Image, Text-to-Image
- Billing: $0.0155 per image (USD)
- Endpoint: `POST https://api.chinaapi.ai/v1/images/generations`
- 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.ai/register?lang=en&utm_source=chinaapi&utm_medium=model-md&utm_campaign=step-2x-large

## Quickstart

```
curl -X POST https://api.chinaapi.ai/v1/images/generations \
  -H "Authorization: Bearer $CHINAAPI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "step-2x-large",
    "prompt": "A clean product hero image with controlled lighting"
  }'
```

## FAQ

**How do I use step-2x-large?**
Use step-2x-large through ChinaAPI with an API key and the OpenAI-compatible endpoint shown on this page.

**How much does step-2x-large cost?**
step-2x-large is $0.0155 per image, 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 step-2x-large 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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Markdown twin of https://chinaapi.ai/models/step-2x-large/ — generated by scripts/gen_model_pages.py. Full catalog: https://chinaapi.ai/llms-full.txt