Stable Diffusion Free Plan: What You Actually Get Before Paying
Stable Diffusion is free to self-host under a Community License below $1M revenue, and its API starts with 25 free credits. Here is what each free route covers.
By Galactic News Editorial · Published 2026-11-12T16:28:49+00:00 · Updated 2026-11-12T16:28:49+00:00
Stable Diffusion is genuinely free in one specific way: the model weights are open, and you can download and run them yourself at no licence cost. But there is no single free plan. Stability AI sells three different things, and each one has its own free route. This guide explains what you actually get before paying, and where the free options end.
Stable Diffusion free plan at a glance
| Route | Free option | What it costs after that |
|---|---|---|
| Self-hosted models | Free under the Community License, below $1M annual revenue | Enterprise License, custom price, above $1M revenue |
| Stability AI API | 25 free credits for new accounts | Pay per image, from $0.025 per image |
| Hosted web app | No verified free plan in November 2026 | Check Stability AI's current product pages |
The Community License: what free really means
Stable Diffusion is a family of image models from Stability AI. The model weights are open and free to download. Under the Community License, you can use them for free, including for commercial work, as long as your business earns under $1 million in annual revenue. That covers almost every freelancer and small business.
Cross the $1 million line and the picture changes. Commercial use then needs an Enterprise License, priced by Stability AI on request. There is no published price for it. API providers and large companies fall into this group too.
Free here means no licence fee. It does not mean no cost at all. Running the models yourself needs a computer with a capable graphics card. You pay for the hardware and the electricity. A modern GPU with enough memory costs real money up front, and image generation draws serious power while it runs.
The models are available through open model hubs such as Hugging Face. Community front-ends exist for running them locally, and the current model generation is Stable Diffusion 3.5, released in October 2024. You keep full control of your images and your data, because nothing leaves your machine.
The Stability AI API: 25 free credits, then pay per image
If you do not want to run a GPU, Stability AI sells hosted access through its developer API. New accounts start with 25 free credits. There is no monthly subscription and no ongoing free allowance. A quiet month costs nothing, and a busy month costs whatever you generate.
One credit costs $0.01. Each image costs a set number of credits, depending on the model you call. Stable Diffusion 3.5 Flash costs 2.5 credits per image, which is $0.025. The Medium model costs 3.5 credits, or $0.035. Large Turbo costs 4 credits, or $0.04. Large costs 6.5 credits, or $0.065.
Two other image services sit on the same credit system. Stable Image Core costs 3 credits per image, or $0.03. Stable Image Ultra costs 8 credits per image, or $0.08. Credits are prepaid and non-refundable, so buy a small amount first and test the model you plan to use.
Your 25 free credits buy a useful test run. They cover ten Flash images, or six Large Turbo images, or three Ultra images. That is enough to check quality and speed before you spend anything. After the credits run out, you top up in the billing dashboard.
What about Stability AI's hosted web app?
Stability AI has sold a hosted image studio under changing names, most recently Brand Studio, which replaced the older DreamStudio. As of mid-October 2026, the official Brand Studio plan pages returned 404 errors, and the self-serve trial and paid tiers listed in older guides could not be verified. Do not rely on old figures for a hosted plan. Check Stability AI's own site before you budget for one.
This matters because many pricing guides still quote Brand Studio tiers from earlier in 2026. Those figures are historical now. The two routes you can verify today are self-hosting under the Community License and the pay-as-you-go API.
What self-hosting actually costs
Self-hosting trades a subscription for hardware. A graphics card with at least 8 GB of memory runs the smaller models, while the Large model wants more. Cloud GPU rental is the alternative if you lack the hardware. Services such as ThinkDiffusion rent hosted Stable Diffusion by the hour, with a free trial of around 15 minutes for new sign-ups.
Weigh three costs before you choose. Hardware or rental fees are the first. Your time setting up drivers, models, and a front-end is the second. Electricity is the third, and it adds up on long generation sessions. For occasional images, the API at $0.025 to $0.08 per image is usually cheaper than owning a GPU.
How to start free today
Follow these steps to test Stable Diffusion without paying. First, decide whether you want local control or hosted convenience. Second, if you choose local, download the SD 3.5 weights and a community front-end, and confirm your graphics card has enough memory. Third, if you choose hosted, create a Stability AI developer account and use the 25 free credits to test the model that fits your work. Fourth, check whether your revenue sits under the $1 million Community License line before using images commercially.
Bottom line
The stable diffusion free plan is real, but it is a licence, not a subscription. You can run the models yourself for free under the Community License if your revenue is under $1 million a year. The API gives you 25 free credits to test with, then charges $0.025 to $0.08 per image. There is no verified free hosted web plan in November 2026, so treat old Brand Studio prices as history. Start with the free credits or a local install, and pay only when you know which model you need.