Side by side
Leonardo.Ai vs Stable Diffusion (Stability AI)
A fact-based comparison built only from each tool's verified directory profile — pricing summaries, plan availability, platforms, and stated strengths and limitations. No rankings, no sponsored placement.
| Criterion | Leonardo.Ai | Stable Diffusion (Stability AI) |
|---|---|---|
| Category | AI Image Generators | AI Image Generators |
| In one sentence | Image and video generation platform with its own models (Phoenix, Lucid Origin) and third-party models. | Stability AI's open-weight image models, also available through a credit-based API. |
| Problem it solves | Producing large volumes of consistent visual assets is slow; Leonardo generates them with style controls and reusable models. | Teams that need control, privacy or customisation cannot always use closed cloud generators; Stable Diffusion can be self-hosted and fine-tuned. |
| Free plan | Yes | Yes |
| Developer API | Yes — docs | Yes — docs |
| Open source | No | No |
| Platforms | Web, iOS, API | Windows, Linux, macOS (local), API |
| Pricing (summary) | Free plan with daily token refresh. Essential $12, Premium $30 and Ultimate $60 per month with 8,500, 25,000 and 60,000 fast tokens. Team plans share token pools, and the API is pay-as-you-go. Checked 2026-10-19 | Model weights are free under the Stability Community Licence for individuals and organisations under $1M annual revenue; larger companies need a custom Enterprise licence. The hosted API is pay-as-you-go at $0.01 per credit with a small starter credit grant. Checked 2026-10-19 |
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How to choose
Both profiles link to the vendors' official pricing — plan details change often, so verify there before buying. Pick based on the criterion rows above that matter to your workflow, not on rankings: we don't rank tools, because the right choice depends on your needs.