Yet another Hacker News

Flux 3 Image Klein: open weights, 5.6B parameters

48 points gmays 1 hour ago 7 comments

Mashimo 1 hour ago | parent

People on reddit claim it's bad at generating images of people, apparently because they removed anything close to nsfw from the training set. Anyone already tried it?

minimaxir 1 hour ago | parent

Some examples of the Reddit posts/memes:

https://reddit.com/r/StableDiffusion/comments/1x79gth/why/

https://reddit.com/r/StableDiffusion/comments/1x7ktbu/enshit...

I gave Flux 3 Klein my typical human test that has never failed on newer image models and it did fail; in addition to lower quality, the fingers were definitely not the correct proportions.

Whether the cause is due to more safeguards against NSFW content is hard to confirm technically; it was more an intuition back in the Stable Diffusion XL days but I suspect modern training paradigms are better at correlative inference.

tetraodonpuffer 1 hour ago | parent

did you try with https://huggingface.co/black-forest-labs/flux-3-image-klein-... apparently the model is not going to work well unless this type of "prompt upsampler" is added

minimaxir 58 minutes ago | parent

I did it in OpenRouter, which hits the direct BFL API.

spottedmarley 29 minutes ago | parent

There's a base version for LoRA training so a porn adapter is likely already being built.

jjcm 1 hour ago | parent

It's editing capabilities have been really solid, but I've been disappointed with its ability to do finer text details (a niche use case for my own purposes). There's also a lot of reports of body horror outputs, but I haven't encountered any myself.

Still though, it's a lot like the porsche mission S vs the tesla roadster situation with the weights release. Moss Image dropped which looks far better at the moment, leading to a "why Flux?" question in the community.

I still think the edit capabilites are absolutely excellent, but for t2i I'd try out moss: https://huggingface.co/OpenMOSS-Team/MOSS-Image-Base/tree/ma...

I've been VERY impressed with Moss' design capabilites out of the box. Some samples:

https://image.non.io/9a32f732-668e-4fb3-bfef-13f0f40a0972.we...

https://image.non.io/8b5ee315-1ffd-4985-8ff0-d62e19d33f29.we...

https://image.non.io/5130501a-5c07-4635-82f5-fa64d60e8871.we...

IMO the taste is lacking, but it has some of the best text reproductions I've seen with their new VAE. Here's a type ramp example:

https://image.non.io/57246870-a245-4875-983f-993656e09e3d.we...

writtenone 38 minutes ago | parent

archived, no trackers: https://nonograph.com/flux-3-image-klein-10-16-2026-1