Stable Diffusion 3.5

Stable Diffusion 3.5 is Stability AI's latest open-source image generation model, released in October 2024, featuring three versions: Large, Medium, and Large Turbo. As a leader in open-source image generation, SD 3.5 significantly improves image quality and generation speed while maintaining open-source advantages.

Core Features

• Fully Open Source: Model weights fully open, supports commercial use
• Multiple Versions: Large (8B), Medium (2.5B), Large Turbo for different needs
• High-Quality Output: Image quality approaching closed-source models
• Fast Generation: Turbo version significantly improves generation speed
• Flexible Deployment: Can run on consumer-grade hardware

Model Versions

SD 3.5 Large (8B)

• Parameters: 8 billion parameters
• Features: Highest quality, rich details
• Use: Professional creation, high-quality requirements

SD 3.5 Medium (2.5B)

• Parameters: 2.5 billion parameters
• Features: Balanced quality and efficiency
• Use: Daily use, rapid iteration

SD 3.5 Large Turbo

• Parameters: 8 billion parameters
• Features: Generation in 4 steps, ultra-fast
• Use: Real-time applications, quick prototyping

Major Improvements

• Better Prompt Following: Accurately understands complex descriptions
• Improved Text Rendering: Generates clearer text
• More Realistic Figures: More natural portrait generation
• Richer Details: Better texture and material representation
• Faster Inference: Turbo version significantly speeds up generation

Applications

1. Personal Creation: Artistic creation, hobby projects
2. Commercial Design: Product design, marketing materials
3. Game Development: Game assets, concept design
4. Research & Development: AI technology research, model fine-tuning
5. Education: AI teaching, technical learning
6. Application Integration: Integrate into products and services

Deployment

• Local: ComfyUI, Automatic1111, Forge
• Cloud Platforms: Replicate, Together AI, RunPod
• API Service: Stability AI API
• Custom: Deploy on your own infrastructure

System Requirements

Large / Large Turbo

• Minimum GPU: 12GB VRAM (quantized)
• Recommended: 24GB+ VRAM (RTX 4090, A100)

Medium

• Minimum GPU: 8GB VRAM
• Recommended: 12GB+ VRAM (RTX 3060+)

License

• Open Source: Stability AI Community License
• Commercial: Allowed, free under $1M annual revenue
• Unrestricted: Completely free for research and personal use

Comparison

vs Flux.1

• ✅ Fully open source, commercial use
• ✅ Lower hardware requirements
• ⚖️ Slightly lower quality but still excellent

vs DALL-E 3

• ✅ Open source control, data privacy
• ✅ No API fees
• ✅ Fine-tunable

vs Midjourney

• ✅ Open source and free
• ✅ Local deployment
• ⚖️ Different artistic styles

Community

• Large Community: Active developers and users
• Rich Resources: Numerous LoRAs, plugins, tutorials
• Continuous Innovation: Community-driven features
• Mature Ecosystem: Complete toolchain

Summary

Stable Diffusion 3.5 continues Stability AI's leadership in open-source image generation, offering flexible choices through Large, Medium, and Turbo versions for users with different needs and hardware. Its fully open-source nature makes it ideal for individual creators, researchers, and enterprises, being the preferred open-source image generation solution.