Flux devは商用利用できない、というのがまことしやかに、半ば常識のように囁かれている。
私もずっとそう信じてきたのだが、どうもそうでもない可能性があるらしい。
Quote
BFL did a very good job making the license terms very clear. You can do anything you want with all the pretty pictures you make. That includes selling them.
You cannot sell access to the dev model
You cannot sell the dev model
You cannot sell access to finetunes of the dev model
you cannot sell finetunes of the dev model
you cannot use outputs from the dev model to train another model for commercial use.
There, that’s it. Anything else, including all this noise about copywrite an entirely unrelated topic that is in regards to the output, the output being all the pretty pictures we make. The license is about the model, the engine by which we make all our pretty pictures.
The real question is, are we actually going to see large-scale high-quality fine-tunes of flux? It takes a lot of money to finetune it. If you have to pay BFL for it’s use commecially, then dish out a few thousand dollars for GPU rental fees, I wonder how many actually good full finetunes we’ll end up seeing on civitai over the next few months. My guess is, not many.
これがマジなら、Flux devで生成した画像を商用利用するのはなんら問題ないことになる。
というわけで利用規約を参照しよう。
“Non-Commercial Purpose” means any of the following uses, but only so far as you do not receive any direct or indirect payment arising from the use of the model or its output
You may use Output for any purpose (including for commercial purposes), except as expressly prohibited herein. You may not use the Output to train, fine-tune or distill a model that is competitive with the FLUX.1 [dev] Model.
めちゃめちゃコンフリクトしてるやん。アホか？
案の定聖書の解釈戦争のごとく論争になっていてワロタ。worst lisence ever.
しかし、上記Redditの発言や、
IIRC BFL has stated on discord that except as expressly prohibited herein refers to “You may not use the Output to train, fine-tune or distill a model that is competitive with the FLUX.1 [dev] Model”.Otherwise, the “(including for commercial purposes)” part makes no sense at all.
という記述(これは前述Redditの定義とマッチする)をあわせて考えるに、これらが真実なのであれば、やはりマージモデルや派生品ではない純正Flux devからの生成結果は商用利用可能ということになる。
これが解釈1としよう。より保守的な解釈としては、「as expressly prohibited herein」は「you do not receive any direct or indirect payment** arising from the use of the model or its output」の部分を指し、「You may use Output for any purpose」はBFLに直接コンタクトをとって商用ライセンスを獲得した者のみ、という解釈がある。これが解釈2。
For what it’s worth, I asked my mom (a lawyer who has been practicing more than 30 years) about the license, and she essentialy said the same thing.
https://www.reddit.com/r/StableDiffusion/comments/1ewe6y1/flux_devs_license_doubts/
「俺のママは弁護士だ！」なんて主張をまともに受け合うのも馬鹿らしいが。
個人的にもっともprobableな解釈としては、BFLという決して巨大とは言えない開発者グループの自己防衛のための楯ではないかと思う。これだけわかりにくいライセンスを敷いているのも、いわゆる「二次創作は全部違法だけど黙認してやるよ～、だから許可取りにきたりしないでね！ダメって言うしか無いから！」という現状世界と似た構図ではないか。私はなんの責任も請け負いません、という回りくどい言い方ではないか。
解釈1に有利な証拠
- From the black forest api for all of their apps
Output. Company claims no ownership rights in and to the Outputs, and Developer and Users may use the Output for their own personal or commercial purposes, subject to any restrictions set forth herein or in the Flux Service Terms. For the avoidance of doubt, Outputs do not include any components of the Flux API or the Flux AI model, such as its weights or parameters
https://docs.bfl.ml/agreement/
- Wikipediaの記述
The models are released under different licences with Schnell (meaning Fast in German language) released as open-source software under Apache License, Dev released as source-available software under a non-commercial licence, and Pro released as proprietary software and only available as API that can be licensed by third-party users.[15][16] Users retained the ownership of resulting output regardless of models used.[17][18]
結局「except as expressly prohibited herein」の解釈バトルになってしまう。hereinってどこやねん。英語のテストか？
もっとセーフにいくなら、Schnellはこんな回りくどいライセンスじゃなくてapache2だからどう使おうが真っ白ってくらいですかね。