Stable Diffusion AI Models: All Versions Compared
Stable Diffusion is an open-source image generation model known for its flexibility, high-quality outputs, and widespread availability across both custom tools and popular AI platforms.
Stable Diffusion is Stability AI's AI image generation suite — the open-source foundation that transformed the AI image landscape, now spanning the SD3.5 and SDXL model families with enterprise-grade and consumer-accessible variants. From SD3.5 Large's 8-billion-parameter photorealism to SDXL Turbo's real-time inference, every Stable Diffusion model available on AI Compare Hub can be tested side-by-side against other leading AI image models, for free.
What you can create with Stable Diffusion's models
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Photorealistic images from text
SD3.5 Large generates high-fidelity photorealistic images across a wide style range — including 3D render, photography, painting, and line art. Improved text rendering accuracy and better hand and finger generation make SD3.5 Large the most capable model in the Stable Diffusion family.
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Real-time and rapid image generation
SDXL Turbo delivers real-time image generation via adversarial distillation, enabling near-instant previews and live prompt adjustments. SD3.5 Turbo offers high-speed generation for workflows where iteration speed matters more than maximum quality.
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High-resolution images at 1024×1024
SDXL 1.0 generates native 1024×1024 resolution images with strong stylistic versatility. The SDXL Refiner further enhances final output quality by applying a second-stage refinement pass to SD3.5 or SDXL generations.
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Lightweight local image generation
SD3.5 Medium is optimised for lightweight deployment — runnable on consumer hardware without enterprise GPU infrastructure. It makes stable, quality image generation accessible on desktop and edge devices.
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Community fine-tuned styles
Stability AI's open architecture has enabled the world's largest community of model fine-tuners. Popular 2026 fine-tunes available on AI Compare Hub include RealVisXL for photorealistic portraits, DreamShaper XL for fantasy and concept art, Animagine XL 4.0 for anime illustration, and Juggernaut XL for all-purpose generation.
Why creators choose Stable Diffusion's models
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Open-source with commercial licensing
All core Stable Diffusion models are available under Stability AI's permissive Community Licence — allowing commercial use for individuals and organisations under $1M annual revenue. This open-source commitment is unique among frontier image models and underpins the entire community fine-tune ecosystem.
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8-billion-parameter architecture
SD3.5 Large is built on an 8-billion-parameter architecture — significantly larger than earlier Stable Diffusion versions — delivering substantially improved text rendering accuracy, better hand generation, and superior prompt fidelity compared to SD 2.x and SDXL.
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Enterprise deployment on AWS and NVIDIA
SD3.5 Large is available for enterprise deployment via Amazon Bedrock on AWS. The SD3.5 NIM microservice developed with NVIDIA delivers 1.8x performance gains over standard PyTorch on H100 GPUs, and AMD-optimised ONNX variants achieve up to 2.6x faster inference on Radeon GPUs and Ryzen AI APUs.
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Largest community fine-tune ecosystem
Stability AI's open architecture has generated the broadest ecosystem of community-trained models in AI image generation — from photorealistic portrait models to anime illustration styles to fantasy concept art generators. No other provider offers comparable breadth of fine-tuned variants.
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Speed and quality variants for every workflow
SD3.5 Large, SD3.5 Turbo, and SD3.5 Medium offer a quality-to-speed spectrum within a single generation family. SDXL Turbo adds real-time generation capability. This range means creators can choose the right trade-off for every use case — from live iteration to final-quality export.
How to compare Stable Diffusion models on AI Compare Hub
- Choose your generation type. Stable Diffusion models focus on Text-to-Image generation. Select Text-to-Image from the AI Compare Hub generation interface to begin.
- Select a Stable Diffusion model version. Choose SD3.5 Large for maximum quality and text rendering, SDXL Turbo for real-time generation, SD3.5 Turbo for high-speed output, or a community fine-tune for a specific aesthetic style. Add one or more other image models to compare outputs directly.
- Enter your prompt and generate. Write your prompt, set aspect ratio and resolution, then generate. AI Compare Hub runs all selected models simultaneously — results appear side-by-side for direct comparison.
Common questions
What AI models does Stable Diffusion offer on AI Compare Hub?
Stable Diffusion's model family on AI Compare Hub includes the SD3.5 series — SD3.5 Large (highest quality), SD3.5 Turbo (high speed), and SD3.5 Medium (lightweight) — along with the SDXL series including SDXL 1.0, SDXL Turbo (real-time), SDXL Lightning, and SDXL Refiner. Community fine-tuned models such as RealVisXL, DreamShaper XL, and Animagine XL 4.0 are also available.
What is the difference between SD3.5 and SDXL?
SDXL generates native 1024×1024 images with strong stylistic versatility and remains widely used for its balance of quality and speed. SD3.5 represents the next generation — built on an 8-billion-parameter architecture with substantially improved text rendering accuracy, better hand generation, and higher overall fidelity. SD3.5 Large is the current quality flagship; SDXL Turbo remains the best option for real-time generation speed.
Which Stable Diffusion model is best for AI image generation?
SD3.5 Large is the highest-quality option — recommended for photorealistic outputs, detailed concept art, and any use case where text rendering accuracy within images matters. SDXL Turbo is the best choice when generation speed is the priority. For lightweight deployment on consumer hardware, SD3.5 Medium offers a strong quality-to-resource trade-off.
Are Stable Diffusion models open-source and available for local use?
Yes — all core Stable Diffusion models are available under Stability AI's Community Licence, which permits commercial use for organisations below $1M annual revenue and free use for individuals. Models can be downloaded and run locally, fine-tuned, and deployed on enterprise infrastructure including AWS Bedrock and NVIDIA NIM. Enterprise licences are available for larger organisations.
What community fine-tunes of Stable Diffusion are available?
Popular Stable Diffusion fine-tunes available in 2026 include RealVisXL for photorealistic portrait photography, DreamShaper XL for fantasy and concept art, Animagine XL 4.0 for anime and stylised illustration, and Juggernaut XL for all-purpose high-quality generation. These models are built on Stability AI's open SDXL architecture and available for commercial use under their respective licences.
How can you use Stable Diffusion's AI models on AI Compare Hub?
To generate with Stable Diffusion's models on AI Compare Hub, click any model version card above or head to the AI generation page. Select a Stable Diffusion model version, enter your prompt, and generate.
About Stable Diffusion
Stable Diffusion is a powerful open-source text-to-image model developed by Stability AI. Known for its balance of quality, speed, and flexibility, it enables users to generate detailed visuals from natural language prompts.
The model family includes versions like Stable Diffusion 1.5, 2.1, SDXL, and the latest SD 3.5, each improving image resolution, coherence, and prompt fidelity. Advanced features like inpainting, outpainting, and ControlNet support allow for fine-tuned creative control.
Widely adopted across platforms—including DreamStudio, NightCafe, Leonardo AI, and open-source UIs like ComfyUI and AUTOMATIC1111—Stable Diffusion remains a leading choice for both independent creators and enterprise applications seeking open, customizable image generation.
Stable Diffusion Model Versions
- SDXL 1.0 — Released: 2023 — Image
- Stable Diffusion 3.0 — Released: February 2024 — Image
- Stable Diffusion 3.5 — Released: October 2024 — Image
- SD 3.5 Large — Released: October 2024 — Image — 25 credits
- SD 3.5 Medium — Released: October 2024 — Image — 15 credits
- SD 3.5 Large Turbo — Released: October 2024 — Image — 15 credits
- Stable Image Ultra — Released: June 2024 — Image — 30 credits
- Stable Image Core — Released: September 2024 — Image — 10 credits
Generate with Stable Diffusion on AI Compare Hub
AI Compare Hub lets you generate with Stable Diffusion models and compare results against other leading AI models. Select a version below to see full details, try generation, and browse community examples.