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Stable Diffusion API

Stable Diffusion

Qwen Qwen3 4b Free

Generate images with Qwen Qwen3 4b Free (Stable Diffusion model, ID: qwen-qwen3-4b-free) via the Stable Diffusion API. Free tier, REST API, cURL/Python/Node code samples.

Qwen Qwen3 4b Free sample image

Generate with Qwen Qwen3 4b Free via API

Send a POST request to https://stablediffusionapi.com/api/v4/dreambooth with your API key. Get yours at modelslab.com.

curl -X POST 'https://stablediffusionapi.com/api/v4/dreambooth' \
  -H 'Content-Type: application/json' \
  -d '{
  "key": "YOUR_API_KEY",
  "model_id": "qwen-qwen3-4b-free",
  "prompt": "a photo of qwen qwen3 4b free",
  "negative_prompt": null,
  "width": "512",
  "height": "512",
  "samples": "1",
  "num_inference_steps": "30",
  "guidance_scale": 7.5,
  "safety_checker": "no",
  "enhance_prompt": "yes",
  "seed": null,
  "webhook": null,
  "track_id": null
}'

Also searched as

Qwen Qwen3 4b Free is also known as: Qwen Qwen3 4b Free, qwen-qwen3-4b-free, qwen qwen3 4b free, qwenqwen34bfree, qwen.qwen3.4b.free, qwen-qwen3.4b-free. Use it for stable diffusion image generation, available for download via the Stable Diffusion API REST API at https://stablediffusionapi.com/api/v4/dreambooth.

FAQ — Qwen Qwen3 4b Free

How do I use Qwen Qwen3 4b Free via API?
Send a POST request to https://stablediffusionapi.com/api/v4/dreambooth with your API key, prompt, and model_id "qwen-qwen3-4b-free". Get an API key from modelslab.com.
Is Qwen Qwen3 4b Free free to use?
Yes — Stable Diffusion API offers a free tier with 20 generations. Paid plans starting at $8/month give you unlimited access to Qwen Qwen3 4b Free and 1,000+ other models.
What parameters does Qwen Qwen3 4b Free support?
Qwen Qwen3 4b Free accepts standard Stable Diffusion parameters: prompt, negative_prompt, width, height, samples, num_inference_steps (default 30), guidance_scale (default 7.5), seed, and safety_checker.
Can I use generated images commercially?
Yes. You retain copyright on all images you generate via the API and can use them commercially.