Open source and commercial use, model by model.

Which models are open-source and which are open-weight, with the licence, a short commercial-use answer and the conditions each developer attaches, for every model in the Windpaint catalogue. This is our reading of each licence, not legal advice.

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A sunlit artist studio with large canvases leaning against a white brick wall, paint jars and brushes on a wooden table, warm afternoon light — A sunlit artist studio with large canvases leaning against a white brick wall, paint jars and brushes on a wooden table, warm afternoon…Z-Image Turbo · seed 11

Models: 19 in the catalogue
Open source: 11
Open weight: 8
Live: Z-Image Turbo, FLUX.2 [klein] 4B

Open source or open weight.

Every model here has downloadable weights. The licence decides which term fits.

Open-source means the weights are under an OSI-approved licence, here Apache-2.0 or MIT, which allow any use, commercial included. Open-weight means you can download the weights, but the licence restricts use: no commercial use, a revenue or user threshold, excluded territories or a list of banned uses. Those restrictions fail the Open Source Definition.

Some in the community, and the OSI's Open Source AI Definition, hold that weights alone, even under Apache-2.0, aren't fully open source without the training code and data. The tables below use the licence test.

Image models: licence and commercial use.

Each row links to the model's licence section, which has the full conditions and their sources.

Licence and commercial use for each image model in the catalogue. Our reading of each licence, not legal advice.
Model	Status	Licence	Open source?	Commercial use	Conditions
Z-Image Turbo	Live	Apache-2.0	Yes	Yes	Unmodified Apache 2.0 text for code and weights, no extra terms. Z-Image repo, LICENSE
FLUX.2 [klein] 4B	Live	Apache-2.0	Yes	Yes (4B models)	Only [klein] 4B and 4B Base are Apache-2.0; the 9B models and FLUX.2 [dev] are non-commercial. flux2 repo The card's out-of-scope uses list, and BFL's Developer Terms, Self-Hosted Commercial License Terms and Usage Policy for commercial open-weight users. FLUX.2-klein-4B model card No use of BFL or FLUX marks that implies endorsement. FLUX.2-klein-4B model card
Z-Image	Coming soon	Apache-2.0	Yes	Yes	Unmodified Apache 2.0 text, no extra terms. Z-Image repo, LICENSE
Qwen-Image-2512	Coming soon	Apache-2.0	Yes	Yes	Apache-2.0 per the card metadata and the repo's License Agreement section. Qwen-Image repo
FLUX.1 [schnell]	Coming soon	Apache-2.0	Yes	Yes	The card's out-of-scope uses list. flux repo, FLUX.1-schnell.md Gated download: log in and agree to share your Hugging Face information. FLUX.1-schnell model card
HiDream-O1-Image	Coming soon	MIT	Yes	Yes	Keep the MIT copyright and permission notice in copies. HiDream-O1-Image repo, LICENSE The optional local prompt agent (Gemma-4-31B-it) has its own licence. HiDream-O1-Image model card
Stable Diffusion XL	Coming soon	CreativeML Open RAIL++-M	No, open-weight	No non-commercial clause; use restrictions apply	A hosted service is Distribution: Attachment A restrictions go into your user terms as an enforceable provision. stable-diffusion-xl-base-1.0, LICENSE.md Pass on the licence, keep notices, mark modified files. stable-diffusion-xl-base-1.0, LICENSE.md The card's Direct Use section says "research purposes only". stable-diffusion-xl-base-1.0 model card
Qwen-Image-Edit-2511	Coming soon	Apache-2.0	Yes	Yes	Apache-2.0 per the card metadata and its License Agreement section. Qwen-Image-Edit-2511 model card
FLUX.2 [klein] 9B	Reference	FLUX Non-Commercial License	No, open-weight	No (non-commercial)	Non-commercial, non-production use only. Commercial use needs a separate licence from BFL. flux2 repo, LICENSE-FLUX-NON-COMMERICAL Content filters or output review required; outputs can't train a model that competes with FLUX. flux2 repo, LICENSE-FLUX-NON-COMMERICAL
Qwen-Image-2.1	Reference	Qwen Research License	No, open-weight	No (research only)	Research or evaluation use only. Commercial use needs a separate licence from the Qwen team. Qwen-Image-2.1, LICENSE Models built with it or its outputs must show "Built with Qwen" or "Improved using Qwen". Qwen-Image-2.1, LICENSE
MiniMax H3-Image	Reference	MiniMax-H3-Image Community License Agreement	No, open-weight	Conditional	Not licensed in the US, the EU, the UK or South Korea. MiniMax-H3-Image, LICENSE Written authorisation above US$1 million annual revenue, or to host it for others. MiniMax-H3-Image, LICENSE Show "MiniMax-H3-Image" in commercial products. MiniMax-H3-Image, LICENSE

Video models: licence and commercial use.

Each row links to the model's licence section, which has the full conditions and their sources.

Licence and commercial use for each video model in the catalogue. Our reading of each licence, not legal advice.
Model	Status	Licence	Open source?	Commercial use	Conditions
Wan 2.2 image-to-video	Coming soon	Apache-2.0	Yes	Yes	The Wan team claims no rights over generated content. Wan2.2 repo The README asks that use not involve sharing unlawful or harmful content, personal information meant to harm, or misinformation. Wan2.2 repo
Wan 2.2 text-to-video	Coming soon	Apache-2.0	Yes	Yes	The Wan team claims no rights over generated content. Wan2.2 repo The README asks that use not involve sharing unlawful or harmful content, personal information meant to harm, or misinformation. Wan2.2 repo
Wan 2.2 TI2V 5B	Coming soon	Apache-2.0	Yes	Yes	The Wan team claims no rights over generated content. Wan2.2 repo
LongCat-Video	Coming soon	MIT	Yes	Yes	No rights to Meituan trademarks or patents. LongCat-Video repo You're responsible for complying with data protection, privacy and content-safety law. LongCat-Video repo
HunyuanVideo 1.5	Coming soon	Tencent Hunyuan Community License	No, open-weight	Conditional	Not licensed in the EU, the UK or South Korea. HunyuanVideo-1.5 repo, LICENSE Over 100 million MAU in the month before November 21, 2025: request a licence from Tencent. HunyuanVideo-1.5 repo, LICENSE Give users the agreement, put the use restrictions in your terms, name the provider and state Tencent doesn't endorse it. HunyuanVideo-1.5 repo, LICENSE No using outputs to improve other AI models; label machine-generated content placed in public. HunyuanVideo-1.5 repo, LICENSE
LTX-2.5	Reference	LTX-2.x Community License	No, open-weight	Conditional	$10M or more in annual revenue (with affiliates): a paid Commercial Use Agreement is needed. LTX-2 repo, LICENSE-2_x No use in a product that directly competes with Lightricks' commercial offerings without a separate licence. LTX-2 repo, LICENSE-2_x Put Attachment A in your user terms and keep watermarking and provenance features intact. LTX-2 repo, LICENSE-2_x
LTX-2.3	Reference	LTX-2 Community License	No, open-weight	Conditional	$10M or more in annual revenue (with affiliates): a paid commercial use licence is needed. LTX-2 repo, LICENSE-2 No use in a product that directly competes with Lightricks' commercial offerings without a separate licence. LTX-2 repo, LICENSE-2 Put Attachment A in your user terms and give recipients the agreement. LTX-2 repo, LICENSE-2
MiniMax H3	Reference	MiniMax H3 Community License	No, open-weight	Conditional	Not licensed in the US, the EU, the UK or South Korea; a separate licence can be requested. MiniMax-H3, LICENSE Over US$20 million yearly revenue: prior written authorisation. Show "MiniMax H3" in commercial products. MiniMax-H3, LICENSE Bind users to the use restrictions and run safeguards with a way to report violations. MiniMax-H3, LICENSE No using outputs to improve other AI models; label machine-generated content placed in public. MiniMax-H3, LICENSE

How this is put together.

From each developer's own licence text, model card and README.

The commercial-use answer is our reading of the licence. The conditions are the ones the licence or the developer's own pages attach, each linked to where it's stated. Where a card adds terms beyond the licence, such as acceptable-use lists, they're listed too.

This isn't legal advice. Read the licence text before you rely on it. For running these models yourself, see hardware requirements.

Questions.

Which of these models are open source?

Z-Image Turbo, FLUX.2 [klein] 4B, Wan 2.2 image-to-video, Z-Image, Qwen-Image-2512, FLUX.1 [schnell], HiDream-O1-Image, Qwen-Image-Edit-2511, Wan 2.2 text-to-video, Wan 2.2 TI2V 5B and LongCat-Video. Their weights are under Apache-2.0 or MIT, both OSI-approved open-source licences.

Which models are open-weight but not open source?

Stable Diffusion XL (CreativeML Open RAIL++-M), HunyuanVideo 1.5 (Tencent Hunyuan Community License), FLUX.2 [klein] 9B (FLUX Non-Commercial License), Qwen-Image-2.1 (Qwen Research License), MiniMax H3-Image (MiniMax-H3-Image Community License Agreement), LTX-2.5 (LTX-2.x Community License), LTX-2.3 (LTX-2 Community License) and MiniMax H3 (MiniMax H3 Community License). You can download the weights, but each licence restricts use. Each model page lists the conditions with links to the licence text.

Which of these models are Apache-2.0?

Z-Image Turbo, FLUX.2 [klein] 4B, Wan 2.2 image-to-video, Z-Image, Qwen-Image-2512, FLUX.1 [schnell], Qwen-Image-Edit-2511, Wan 2.2 text-to-video and Wan 2.2 TI2V 5B. FLUX.2 [klein] 4B is Apache-2.0, but the 9B [klein] models and FLUX.2 [dev] are under BFL's non-commercial licence.

Which of these models are MIT?

HiDream-O1-Image and LongCat-Video. MIT requires keeping the copyright and permission notice in copies.

Which models can't be used commercially under their open licence?

FLUX.2 [klein] 9B (FLUX Non-Commercial License) and Qwen-Image-2.1 (Qwen Research License). Both developers offer separate commercial licences.

Which licences limit where or by whom a model can be used?

The HunyuanVideo 1.5 licence doesn't cover the EU, the UK or South Korea, and the MiniMax H3 and MiniMax H3-Image licences don't cover the US, the EU, the UK or South Korea. The LTX-2.3 and LTX-2.5 licences require a paid licence from organisations with $10 million or more in annual revenue.

Is this legal advice?

No. It's our reading of each licence and the developer's own notes, with a link to the source for every condition. Read the licence text before you rely on it.

Open source and commercial use, model by model.

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