Stable Diffusion vs Flux: 어떤 오픈소스 이미지 AI가 더 나을까? [2026년 비교]
Compare Stable Diffusion 3.5 and Flux on model performance, customization, text rendering, and hardware requirements. A guide to open-source AI image generation.
평가:Stable Diffusion and Flux are both open-source image generation AIs with different strengths. Stable Diffusion has years of ecosystem development with massive community models, LoRAs, and ControlNet — unmatched customization freedom. Flux excels in base image quality and text rendering accuracy, approaching Midjourney-level quality for free. For existing SD workflow users, stay with it. For newcomers or text-heavy generation, Flux is recommended.
Stable Diffusion & Flux 개요
Stable Diffusion
Stability AI's flagship open-source image generation AI. SD 3.5 uses MMDiT architecture. Massive community ecosystem with unmatched customization options.
Stable Diffusion 자세히 보기 →Flux
Next-gen open-source image generation AI by Black Forest Labs (ex-Stability AI members). Known for exceptional text rendering and image quality.
Flux 자세히 보기 →기능 및 가격 비교
| 기능 | Stable Diffusion | Flux |
|---|---|---|
| 개발사 | Stability AI | Black Forest Labs (ex-Stability AI team) |
| 가격 | Open source (free) / API available | Open source (free) / API available |
| 최신 모델 | Stable Diffusion 3.5 (Large/Medium) | Flux 1.1 Pro / Dev / Schnell |
| 이미지 품질 | Excellent (major improvement in SD3.5) | Excellent (approaching Midjourney quality) |
| 텍스트 렌더링 | Improving (still challenging) | Exceptional (industry-leading among open-source) |
| 생성 속도 | Standard (model-size dependent) | Schnell model is ultra-fast |
| 커스터마이징 | Extremely high (LoRA/ControlNet/rich ecosystem) | Growing (LoRA support, ecosystem expanding) |
| 커뮤니티 | Massive (tens of thousands of models on Civitai) | Rapidly growing (new but active) |
| VRAM 필요량 | SD3.5 Medium: 8GB+ | Flux Dev: 12GB+ |
최종 평가
최종 평가
Stable Diffusion and Flux are both open-source image generation AIs with different strengths. Stable Diffusion has years of ecosystem development with massive community models, LoRAs, and ControlNet — unmatched customization freedom. Flux excels in base image quality and text rendering accuracy, approaching Midjourney-level quality for free. For existing SD workflow users, stay with it. For newcomers or text-heavy generation, Flux is recommended.
사용 사례별 추천
Leveraging custom models and LoRAs
Tens of thousands of community models on Civitai for any style or purpose. Unmatched ecosystem depth.
Text-heavy images (posters, banners, etc.)
Best text rendering accuracy among open-source models. Ideal for text-inclusive design generation.
Running on lower-spec GPUs
SD3.5 Medium runs on 8GB VRAM. Flux requires 12GB+ minimum, demanding higher hardware specs.
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