# 1 Best Open-Source Alternatives to Leonardo AI in 2026

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

> 1 of the 5 Leonardo AI alternatives we list qualify for this filter. The [full list](https://findalternative.to/leonardo-ai) is the canonical page.

| Alternative | Best for | Price | Details |
| --- | --- | --- | --- |
| 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 |

All 5 alternatives to Leonardo AI: https://findalternative.to/leonardo-ai

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Markdown mirror of https://findalternative.to/leonardo-ai/open-source — findalternative.to, honestly ranked software alternatives. AI info: https://findalternative.to/ai