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Chroma: Open-Source, Uncensored, and Built for the Community - [WIP]

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Hey everyone!

Chroma is a 8.9B parameter model based on FLUX.1-schnell (technical report coming soon!). It’s fully Apache 2.0 licensed, ensuring that anyone can use, modify, and build on top of it—no corporate gatekeeping.

What Chroma Aims to Do

  • Training on a 5M dataset, curated from 20M samples including anime, furry, artistic stuff, and photos.

  • Fully uncensored, reintroducing missing anatomical concepts.

  • Built as a reliable open-source option for those who need it.

See the Progress

Support Open-Source AI

The current pretraining run has already used 5000+ H100 hours, and keeping this going long-term is expensive.

If you believe in accessible, community-driven AI, any support would be greatly appreciated.

👉 [https://ko-fi.com/lodestonerock] — Every bit helps!

this looks very exciting! large flux finetunes are so rare.

Clybius's Avatar

Been using this for a small bit, very impressive and diverse!
Remember to use the FluxMod ComfyUI nodes to load the model & utilize padding removal on the T5 conditioning for proper inference!

How does padding removal work? I tried applying it to the conditioning outputs of my positive and negative prompt and only got an error that said 'attention_mask'.

Nvm, I got it.

Featus's Avatar

I got the same error. I can't use it. Is there a way to make it work?

WithoutOrdinary's Avatar

Yes.