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Leonardo AI alternatives

1 open-source project that already does this job. Free to use - not free to run, which is what the numbers on the right are for.

The full assessment →

The projects

ComfyUINode-based open-source diffusion workflow engine with a large ecosystem.Open on GitHub

What you give up either way

proprietary models, hosted GPU capacity, training tools, and asset ecosystem
frontier proprietary models
hosted GPU capacity
licensed training data
moderation and fast global delivery

An open-source project doing the core job proves a replacement is possible. It does not prove it matches Leonardo AI, and it does not prove anyone has run it for a month. How we decide.