[HN Gopher] FLUX.1 Kontext [Dev] - Open Weights for Image Editing
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       FLUX.1 Kontext [Dev] - Open Weights for Image Editing
        
       Author : minimaxir
       Score  : 117 points
       Date   : 2025-06-26 15:31 UTC (7 hours ago)
        
 (HTM) web link (bfl.ai)
 (TXT) w3m dump (bfl.ai)
        
       | minimaxir wrote:
       | The new non-commercial license is a bit of a doozy:
       | https://huggingface.co/black-forest-labs/FLUX.1-Kontext-dev/...
        
         | samtheprogram wrote:
         | If I'm understanding this correctly, you can't run this in a
         | commercial setting, even if you're not creating a derivative
         | but simply generating outputs?
        
           | smerrill25 wrote:
           | I believe you can buy licensing? But def not the same as
           | 'Open Weights..'
        
             | StevenWaterman wrote:
             | "Weights available" perhaps
        
           | stefan_ wrote:
           | The same people that claim using all of humanities creation
           | is fair use want you to pay for a bunch of MatMul inputs that
           | are unrecognizable to anyone after quantizing them yourself.
        
             | cchance wrote:
             | Stupid question, whats to stop someone from quantizing it,
             | shit even just barely finetuning it for 1 step and calling
             | it something different, no ones actually checking WTF these
             | models are based on when they're released, especially for
             | the source models, especially if the release is not around
             | the same time of release as the base, i'm 99% sure someone
             | could fine tune SD3.5 a bit and release it today as Frizz
             | 1.0 and people would just take it as a new model using the
             | same layer structure as SD3.5 lol
        
               | elpocko wrote:
               | Not impossible but you'd gonna have to do a bit more than
               | that. Most people are ignorant, but not all of them. An
               | experienced user can tell what model family was used from
               | a bunch of generated images. Also, no one would believe a
               | nobody who just showed up claiming to have trained a
               | brand new diffusion model.
        
               | SV_BubbleTime wrote:
               | I forget which, but some HiDream maybe was called out for
               | this when it happened to generate basically the same dude
               | in front of the same archway when compared against flux.
        
               | liuliu wrote:
               | HiDream is a separate architecture. OTOH, it _might_ be
               | finetuned on FLUX generated data, we will never know.
        
               | doctorpangloss wrote:
               | HiDream is trained on AI generated outputs.
        
               | liuliu wrote:
               | There is a simple method to detect this: taking a model
               | "claimed" to be trained scratch, taking the model you
               | suspected is the original, generate a new model =
               | claimed_model * 0.5 + suspected_model * 0.5.
               | 
               | If the claimed_model is trained from scratch, the new
               | model will have 0 capability (basically generate
               | gibberish words or noise). If it is a derivative of the
               | suspected model, it will do something sensible.
               | 
               | It is a bit more interesting for diffusion model because
               | you can fine-tune to a different objective, making this
               | investigation harder to do, but not impossible.
        
               | doctorpangloss wrote:
               | FLUX watermarks its outputs.
               | 
               | Additionally, certain prompts will produce nonsensical
               | but specific outputs known only to BFL.
        
             | whywhywhywhy wrote:
             | The double standard is frankly disgusting.
             | 
             | I'm actually all for open training but I think it's only
             | fair you treat the model as your treated the life's work of
             | others.
        
             | ronsor wrote:
             | Quite frankly, I still believe that these model licenses
             | are dubiously enforceable at best, and I'm skeptical that
             | models are copyrightable at all.
        
       | kristopolous wrote:
       | I was at a hackathon with this thing last weekend in SF at bfl.
       | It's a pretty good system.
        
         | HanClinto wrote:
         | What sorts of things were built with it?
        
           | kristopolous wrote:
           | I think this should work: https://docs.google.com/spreadsheet
           | s/d/1cxh9oA1ZHkzGRMKutVNb...
           | 
           | I was at the top of the list ... pitched it poorly. That
           | night I made a party game to practice:
           | https://pitchanary.com/
           | 
           | The rules might need some work.
        
             | HanClinto wrote:
             | Wow, this is a seriously good turnout for the hackathon.
             | Thank you for posting this list, it's fun to look through
             | these!
        
       | whatevsmate wrote:
       | Neat, I plan to check this out.
       | 
       | I really want an AI to jam with on a canvas rather than to just
       | have it generate the final results.
       | 
       | I have been hoping someone would pick up on the time series
       | forecasting innovations in the LLM space, combine them with data
       | from e.g. the Google quick draw dataset, and turn that into a
       | real-time "painting partner" experience, kind of like chatting
       | with an LLM through brush strokes.
        
         | vunderba wrote:
         | Using the kontext models in Fal.ai shows you a nice slider of
         | the before and after edits and has a button that lets you set
         | the edited image as the new source so you can continue to make
         | changes.
         | 
         | Now that BFL has released a dev model, I'd love to see a
         | Kontext plugin for Krita given that it already has one for
         | Stable Diffusion though!
         | 
         | https://github.com/Acly/krita-ai-diffusion
        
           | dragonwriter wrote:
           | The Krita plugin is a bridge to ComfyUI which can already run
           | Flux and presumably will have native support for Kontext
           | (dev) within a week or so, and the plugin already has limited
           | support for using Flux, so Kontext in the existing plugin
           | (rather than requiring a new one) seems a fairly reasonable
           | expectation.
        
             | dragonwriter wrote:
             | > ComfyUI which can already run Flux and presumably will
             | have native support for Kontext (dev) within a week or so
             | 
             | This was pessimistic, native support today, with workflow
             | and pointer to an alternate fp8 model download for people
             | that can't run the full fp16 checkpoint.
             | 
             | https://comfyanonymous.github.io/ComfyUI_examples/flux/#flu
             | x...
        
       | b0a04gl wrote:
       | this intent in licenses might lowkey prescreens who even gets to
       | build. this creates a soft perimeter = technically open,
       | operationally narrow. it's shaping who can even try, plus cuts
       | out misuse but also cuts out maybe-use. over time, that subtly
       | redefines what counts as valid experimentation
        
       | rushingcreek wrote:
       | This is awesome, and kudos to BFL for releasing the weights. The
       | financial sustainability of open-source is hard to get right, and
       | giving academics this model for free while charging a reasonable
       | licensing fee for startups is something I think makes sense if it
       | allows BFL and others to continue releasing open-weight models.
        
         | doctorpangloss wrote:
         | Would it be financially sustainable if BFL had to pay for
         | express permission for all the image and derived-from-video
         | content it uses? (No)
        
       | vunderba wrote:
       | Here's hoping the distilled [Dev] model can hold up reasonably
       | well against the larger pro/max models which in a lot of ways can
       | completely replace the relatively old-school inpainting
       | techniques of Stable Diffusion.
       | 
       | Some _before /after_ experiments with editing images using
       | Kontext:
       | 
       | https://specularrealms.com/ai-transcripts/experiments-with-f...
        
       | thetoon wrote:
       | What amount of VRAM is this supposed to work with?
        
         | SV_BubbleTime wrote:
         | Today... about 18-20GB.
         | 
         | Tomorrow... like 4GB if you have an hour.
        
           | dragonwriter wrote:
           | > Today... about 18-20GB.
           | 
           | There's an FP8 version that's the default for the ComfyUI
           | template that's in the release that just came out with
           | Kontext support that I've seen reports of running in 12GB or
           | less, and which I'm running at this moment in 16GB.
        
       | treesciencebot wrote:
       | One interesting feature that gets enabled with open weights is
       | adding new capabilities (tasks) to these editing models. They
       | generalize quite well with low samples (30 ish). We talk about it
       | here https://blog.fal.ai/announcing-flux-1-kontext-dev-
       | inference-...
        
         | qingcharles wrote:
         | Absolutely. This is the version of Kontext that everyone has
         | been waiting for. It's far more useful now. This is the first
         | of the new generation of imagegens that allows training. Can't
         | do that with Gemini, GPT, MJ etc.
        
       | oTsanony wrote:
       | Yo guys, I think I might've found a chill and straightforward way
       | to openly generate NSFW stuff using flux1-context on ComfyUI.
        
       | popalchemist wrote:
       | License is a major bummer.
        
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       (page generated 2025-06-26 23:01 UTC)