stabilityai/sd3.5-medium
At 2.5 billion parameters, with improved MMDiT-X architecture and training methods, this model is designed to run “out of the box” on consumer hardware, striking a balance between quality and ease of customization. It is capable of generating images ranging between 0.25 and 2 megapixel resolution.
At 2.5 billion parameters, with improved MMDiT-X architecture and training methods, this model is designed to run “out of the box” on consumer hardware, striking a balance between quality and ease of customization. It is capable of generating images ranging between 0.25 and 2 megapixel resolution.
Input
text prompt
negative text prompt. (Default: empty)
Num Images
number of images to generate (Default: 1, 1 ≤ num_images ≤ 4)
Num Inference Steps
number of denoising steps (Default: 35, 1 ≤ num_inference_steps ≤ 50)
indirectly defines the width and height 9
Guidance Scale
classifier-free guidance, higher means follow prompt more closely (Default: 7, 0 ≤ guidance_scale ≤ 20)
random seed, empty means random (Default: empty, 0 ≤ seed < 18446744073709552000)
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Stable Diffusion 3.5 Medium
Model
Stable Diffusion 3.5 Medium is a Multimodal Diffusion Transformer (MMDiT) text-to-image model that features improved performance in image quality, typography, complex prompt understanding, and resource-efficiency.
Please note: This model is released under the Stability Community License. Visit Stability AI to learn or contact us for commercial licensing details.
Model Description
- Developed by: Stability AI
- Model type: MMDiT text-to-image generative model
- Model Description: This model generates images based on text prompts. It is a Multimodal Diffusion Transformer that use three fixed, pretrained text encoders, and with QK-normalization to improve training stability.
License
- Community License: Free for research, non-commercial, and commercial use for organizations or individuals with less than $1M in total annual revenue. More details can be found in the Community License Agreement. Read more at https://stability.ai/license.
- For individuals and organizations with annual revenue above $1M: please contact us to get an Enterprise License.
Implementation Details
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QK Normalization: Implements the QK normalization technique to improve training Stability.
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Text Encoders：
- CLIPs: OpenCLIP-ViT/G, CLIP-ViT/L, context length 77 tokens
- T5: T5-xxl, context length 77/256 tokens at different stages of training
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Training Data and Strategy:
This model was trained on a wide variety of data, including synthetic data and filtered publicly available data.
For more technical details of the original MMDiT architecture, please refer to the Research paper.
Model Performance
See blog for our study about comparative performance in prompt adherence and aesthetic quality.
Intended Uses
Intended uses include the following:
- Generation of artworks and use in design and other artistic processes.
- Applications in educational or creative tools.
- Research on generative models, including understanding the limitations of generative models.
All uses of the model must be in accordance with our Acceptable Use Policy.
Out-of-Scope Uses
The model was not trained to be factual or true representations of people or events. As such, using the model to generate such content is out-of-scope of the abilities of this model.
Safety
As part of our safety-by-design and responsible AI deployment approach, we take deliberate measures to ensure Integrity starts at the early stages of development. We implement safety measures throughout the development of our models. We have implemented safety mitigations that are intended to reduce the risk of certain harms, however we recommend that developers conduct their own testing and apply additional mitigations based on their specific use cases.
For more about our approach to Safety, please visit our Safety page.
Integrity Evaluation
Our integrity evaluation methods include structured evaluations and red-teaming testing for certain harms. Testing was conducted primarily in English and may not cover all possible harms.
Risks identified and mitigations:
- Harmful content: We have used filtered data sets when training our models and implemented safeguards that attempt to strike the right balance between usefulness and preventing harm. However, this does not guarantee that all possible harmful content has been removed. TAll developers and deployers should exercise caution and implement content safety guardrails based on their specific product policies and application use cases.
- Misuse: Technical limitations and developer and end-user education can help mitigate against malicious applications of models. All users are required to adhere to our Acceptable Use Policy, including when applying fine-tuning and prompt engineering mechanisms. Please reference the Stability AI Acceptable Use Policy for information on violative uses of our products.
- Privacy violations: Developers and deployers are encouraged to adhere to privacy regulations with techniques that respect data privacy.
Contact
Please report any issues with the model or contact us:
- Safety issues: safety@stability.ai
- Security issues: security@stability.ai
- Privacy issues: privacy@stability.ai
- License and general: https://stability.ai/license
- Enterprise license: https://stability.ai/enterprise
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