Stable Diffusion
Open-source image generation you can run yourself
A family of open image-generation models. Because the weights are openly licensed, you can run them locally at no cost, with no vendor quotas and no watermark baked into the output.
Free tier
Checked by hand against the vendor's own pricing and sign-up pages.
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Pricing
What it is
Stable Diffusion is a family of open image-generation models. The weights are published under an open licence, so anyone can run generation on their own machine instead of paying a provider per image.
Key features
- Runs locally
With a suitable GPU you can generate images offline, with no quota and no per-image cost.
- Open ecosystem
Fine-tunes, LoRAs and community models extend what the base model can produce.
- Full control
Sampling steps, seeds, resolution and negative prompts are all yours to set.
Who it suits
- Concept art and illustrations
Exploring visual directions before committing to a final design.
- Batch asset generation
Producing many variations at no marginal cost.
- Private generation
Keeping prompts and images on your own hardware.
Categories
FAQ
Is Stable Diffusion really free?
The models are openly licensed. Running them yourself costs only your own hardware; hosted services charge separately.
Can I sell images generated with it?
Yes under the open licence, though you remain responsible for what you generate.
Alternatives compared
See all 4 Stable Diffusion alternatives →Same job, different terms. Unverified rows stay marked — we do not fill them in.
| Tool | Free tier | Card | Watermark | From |
|---|---|---|---|---|
| Stable Diffusionthis tool | Unlimited if you run it locally | Not required | None | USD 0 |
| Canva | Free plan with limited AI credits | Not required | None | USD 15 |
| Leonardo.Ai | Daily free token allowance | Not required | None | USD 12 |
| Hugging Face | Free tier for public models and Spaces | Not required | None | USD 9 |
| Midjourney | No | Required | — | USD 10 |
Listed on ToolVault. Details change often — if something here is out of date, tell us.