FLUX.1 [dev] is worth keeping when a project already depends on its adapters or its Fill, Depth, Canny and Redux tools. A migration that invalidates approved character adapters can undo useful work. Its B tier reflects that value for maintaining established pipelines and specialist control work. For a new cast, evaluate alternatives before committing. Treat FLUX.1 [dev], FLUX.2 and Schnell as distinct choices, and check weight use, fine-tuning, output rights and hosted-service terms separately. Permission to sell an image does not grant permission to run or fine-tune the model commercially, or make its weights permissively licensed.
Commercial use & license
Open weights under the FLUX.1 [dev] Non-Commercial License. Commercial or production operation and commercial fine-tuning need separate licensing. Commercial use of outputs is permitted subject to the license's conditions; that permission does not extend to commercial model operation.
Adult content rules
BFL prohibits unlawful content and realistic intimate depictions of real people without verified, documented and informed consent. Hosted services add their own filters and terms.
What you need
A compatible GPU runtime, the required model components and enough storage; measure memory use in the chosen workflow.
Ranks are recommendations for the task described, based on reviewed documentation. Model ranks cover non-explicit development work. We have not run practical benchmarks. Check content policies and commercial terms separately. How the ranks work →
Sources & further reading +
Last checked 5 October 2026.