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Stability AIStable Diffusion 3.5 familyCurrentImage generationReleased 22 Oct 2024

Stable Diffusion 3.5 Large

Main open-weight Stability image model; widely used with ComfyUI/diffusers and fine-tunes.

Model idsd3.5-large

PricePrice not published

Where it stands

28newer image generation models since its release

The 5 newest are listed. All image generation models

Weights
Weights are public. Licence: Stability AI Community License. See the licence for commercial terms.

How to call it

4 ways to use Stable Diffusion 3.5 Large, with the model id each provider expects.

Providers, model ids, endpoints and docs for Stable Diffusion 3.5 Large
ProviderModel idEndpointDocs
Stability AI API sd3.5-large https://api.stability.ai/v2beta/stable-image/generate/sd3 platform.stability.ai
Hugging Face huggingface.co
Hugging Face (Large Turbo) huggingface.co
Hugging Face (Medium) huggingface.co

Pricing

Price not published.

No price source linked.

Specs

Input
Text and images
Output
Images
Context window
Not published
Max output
Not published
Open weights
Yes
Licence
Stability AI Community License
Released
22 October 2024
Status
Current
Type
Image generation

What stands out

What its maker marketed at launch, and what people found later, each with its source.

  • Open MMDiT weights, free for small businesses

    8B Multimodal Diffusion Transformer with open weights under a Community License free for commercial use under $1M annual revenue.

    Source: huggingface.co

  • Broad hardware optimization

    Found after launch

    Official TensorRT/FP8 (NVIDIA, ~2x faster, 40% less memory), ONNX AMD GPU and AMD NPU builds released later.

    Source: stability.ai

Notes

curl -X POST https://api.stability.ai/v2beta/stable-image/generate/sd3 -H "Authorization: Bearer $STABILITY_API_KEY" -H "Accept: image/*" \
  -F prompt="a lighthouse at dusk, oil painting" -F model=sd3.5-large -o out.png

Sources: https://huggingface.co/stabilityai/stable-diffusion-3.5-large , https://stability.ai/news-updates , https://platform.stability.ai/docs/api-reference

Not yet checked against an official source: Still Stability’s latest image model family (no official SD4 as of 2026-09; SD4 ‘news’ articles are unverified). API model values for /generate/sd3: sd3.5-large, sd3.5-large-turbo, sd3.5-medium (from third-party docs; official API ref is JS-rendered, not verified). Pricing (credits) not verified.