Stable Diffusion vs FLUX: Two Open-Model Routes, on Official Pages (2026)

Verdict: two open-model routes, each described by its own vendor. Stable Diffusion if you want a self-hosted license alongside a platform API. FLUX if you want open weights you can run on your own infrastructure, with a playground and an API to start. Neither captured page shows a price, so the table carries no cost ranking.

Scorecard

The table records what each vendor’s page says as read on 2026-10-14. Where a page is silent, the cell says “not shown in captured page” and nothing more is inferred.

What Stability’s page covers

Stability AI’s page lists model categories for audio, image, video and 3D. Under deployment it lists a Self-Hosted License and a Platform API as two separate routes. A Learn section links to guides, research, customer stories and an ROI calculator, and a Company section lists careers, safety, partners and the board.

The page does not describe the terms of the self-hosted route in the captured text, and it does not show a fee for either route. A team reading only this page can see that both routes exist, but cannot see what each one costs or which obligations come with it.

What Black Forest Labs’ page covers

The Black Forest Labs homepage now leads with FLUX 3, a model it describes as covering image, video, audio and action prediction. Its open-weights section says FLUX models can run on your own infrastructure, with “full control over deployment, fine-tuning, and customization.” It offers a “Get a License” link there and a Hugging Face and GitHub entry beside it.

Its API section describes a simple-to-integrate API for the latest FLUX models, and its playground section says you can try the models in a browser with “no code required.” That makes the playground the lowest-friction route to a test, before any integration or licence decision.

The licence question

The two pages handle licensing differently, and this is the part a buyer should read most carefully.

Stability’s deployment section names a Self-Hosted License as one of the two routes. The captured text does not expand on it.

Black Forest Labs’ footer lists several separate documents: a Self-Hosted Terms of Service, a Non-Commercial License Terms, a Developer Terms of Service and a FLUX API Service Terms. Its enterprise block says larger organisations can add “the FLUX API and open weights license” to their products and services. This page did not open those documents, so it does not say which one applies to a given model or a given use. Read the document that matches your intended use before you build on either route.

Self-hosting costs and effort

Neither captured page gives a figure for the cost of running a model on your own hardware. The Black Forest Labs page talks about full control over deployment, and the Stability page offers a Self-Hosted License. Those are descriptions of the route, not of the expense.

Self-hosting also means you carry the deployment work the hosted API would otherwise do for you. Both pages describe the self-hosted route as an option beside an API, so the decision is about who runs the infrastructure, not only about whether the model is available.

Fit by team type

• Stable Diffusion: teams that want a self-hosted license and an API from the same vendor, and that will read the license before deployment.
• FLUX: teams that want open weights they can run and customise, starting from a playground that needs no code and moving to an API when the work scales.

Before you choose

Check four things. Do you need to run the model on your own servers, or is a hosted API enough? Does your intended use match the terms document the vendor names for it? Does the playground let you test the output on your own prompts before any commitment? And are you comparing against a price you have seen on a current vendor page, since neither captured page supplies one.

Limits of this comparison

bestfreephotoshopalternative.com compares no outputs and publishes no price where a vendor page shows none. It gives no legal advice on licence terms. The statements above are each vendor’s own words, read on 2026-10-14, and a later page change would not be reflected here.