# 3 Best Free Alternatives to ComfyUI in 2026

By Noah — last updated & pricing verified September 15, 2026.

> 3 of the 4 ComfyUI alternatives we list qualify for this filter. The [full list](https://findalternative.to/comfyui) is the canonical page.

| Alternative | Best for | Price | Details |
| --- | --- | --- | --- |
| Leonardo AI | game artists and concept artists who need multiple fine-tuned AI models plus in-app editing (inpainting, upscaling) rather than a single-model prompt-only workflow | Free | https://findalternative.to/leonardo-ai/about |
| Stable Diffusion | developers and enterprises wanting a self-hostable, fine-tunable image generation model that's free under the Community License for small-scale or non-commercial use, rather than a closed API-only image generator | Free | https://findalternative.to/stable-diffusion/about |
| RunwayML | video creators and small teams who need state-of-the-art AI video generation (Gen-4.5) and want to test the platform free before committing to a monthly credit plan | Free tier · paid from $12/mo | https://findalternative.to/runway/about |

All 4 alternatives to ComfyUI: https://findalternative.to/comfyui

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Markdown mirror of https://findalternative.to/comfyui/free — findalternative.to, honestly ranked software alternatives. AI info: https://findalternative.to/ai