FLUX.2 dev commercial use: what the model card says

The FLUX.2 [dev] weights are under the flux-non-commercial-license, but the model card also says generated outputs "can be used for personal, scientific, and commercial purposes, as described in the FLUX [dev] Non-Commercial License". So the answer is in the license text, not the card summary. Read that license before you ship anything.

This post quotes the FLUX.2-dev model card on Hugging Face, read 2026-09-29. It is not legal advice. The Sume side is from Image generation.

What does the model card say?

Can I run FLUX.2 dev on a consumer GPU?

The card points to the diffusers docs for local deployment on a consumer graphics card such as an RTX 4090 or an RTX 5090. Its example loads a 4-bit quantized model with a remote text encoder on an RTX 4090. It gives no single minimum VRAM number, so this post gives none.

What is FLUX.2 [dev] built for?

The card lists its key features: text-to-image, single-reference editing and multi-reference editing, character, object and style reference without additional training in one model, and training with guidance distillation. It says the open weights are meant to drive scientific research and empower artists to develop workflows, and that the model is available in ComfyUI and Diffusers.

Those are the [dev] model's features. Do not read them as a list of what a hosted FLUX.2 endpoint accepts; check the hosted model's own page.

Is FLUX.2 available through a hosted API?

Sume's image docs use black-forest-labs/flux.2-pro as a model id in a request, and the same page says GET /v1/images/models lists the available models. That is FLUX.2 [pro], a hosted model called with an API key; the docs do not say it uses the downloadable [dev] weights, so do not assume the [dev] license terms apply to a hosted call, and read the terms of the service you use. FLUX.2 API pricing covers what a hosted Pro or Flex call costs.

curl "https://api.sume.com/v1/images/models" \
  -H "Authorization: Bearer $SUME_API_KEY"

What should I check before commercial use?

• The full license text linked from the card, since the card only summarizes it.
• The Acceptable Use Policy the card tells you to acknowledge.
• The terms of any hosted service you use instead of the weights, which are separate from the card.