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Image-generating machine learning model From Wikipedia, the free encyclopedia
Flux (also known as FLUX.1) is a text-to-image model developed by Black Forest Labs, based in Freiburg im Breisgau, Germany. Black Forest Labs was founded by Robin Rombach, Andreas Blattmann, and Patrick Esser.[2] As with other text-to-image models, Flux generates images from natural language descriptions, called prompts.
.webp) An image generated with Flux 1.1 Pro (with Ultra mode) | |
| Original author(s) | Black Forest Labs |
|---|---|
| Developer(s) | Black Forest Labs |
| Initial release | August 2024 |
| Stable release | Flux 1.1 Pro (model)[1]
/ 2 October 2024 |
| Repository | |
| Type | Text-to-image model |
| License |
|
| Website | blackforestlabs |
Black Forest Labs was founded in 2024 by former employees of Stability AI.[3] All three founders had previously researched the artificial intelligence image generation at Ludwig Maximillian University of Munich as research assistants under Björn Ommer.[4][5][6] They published their research results on image generation in 2022, which resulted in Stable Diffusion.[6][7] In August 2024, Flux was integrated into the Grok chatbot developed by xAI and available as part of premium feature on X (formerly Twitter).[8][9][10][11] Investors in Black Forest Labs include Andrerssen Horowitz, Brendan Iribe, Michael Ovitz, Garry Tan, and Vladlen Koltun.[12] The company received an initial investment of US$31 million.[13][14]
Flux is a series of text-to-image models. The models are based on a hybrid architecture that combines multimodal and parallel diffusion transformer blocks scaled to 12 billion parameters.[12] 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]
The models can be used either online or locally by using generative AI user interfaces such as ComfyUI and Stable Diffusion WebUI Forge (a fork of Automatic1111 WebUI).[12][19]
An improved flagship model, Flux 1.1 Pro was released on 2 October 2024.[20][21] Two additional modes were added later, Ultra which can generate image at four times higher resolution and up to 4 megapixel without affecting generation speed and Raw which can generate hyper-realistic image in the style of candid photography on 6 November 2024.[22][23][24]
Related to the Flux is text-to-video model SOTA, currently under development.[12]
According to a test performed by Ars Technica, the outputs generated by Flux.1 Dev and Flux.1 Pro are comparable with DALL-E 3 in terms of prompt fidelity, with the photorealism closely matched Midjourney 6 and generated human hands more consistently over previous models such as Stable Diffusion XL.[25]
Flux has been criticised for its very realistic generated images. According to media reports, depictions ranged from an image of Donald Trump posing with guns to disturbing scenes, which triggered discussions about ethical implications of technologies developed by Black Forest Labs.[4][10]
After the release of the model, social media X was flooded with Flux-generated images.[26][27] Black Forest Labs has not provided exact details of the data used to train the model.[22] Ars Technica suspected that Flux is based on a large, unauthorised collection of images scraped from the internet, a controversial practice with potential legal consequences.[28][25]
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