Image generation

Chroma

A community model retrained from FLUX.1-schnell with a simplified architecture. No style censorship; popular as a base for fine-tuning. In October Chroma-H3 (lodestones) came out: an image fine-tune of the 33B MiniMax H3 video model with speed-up adapters for 4 and 8 steps; its license comes from MiniMax H3.

Developer
lodestones (independent developer), not disclosed
First release
Jan 2025
Latest release
Oct 2026
Sizes
4B – 33B
License
Commercial use with conditionsApache 2.0 for Chroma and Chroma2, Krea 2 Community License for Kroma, MiniMax H3 Community License for Chroma-H3 (does not apply in the European Union, the United Kingdom, South Korea and the USA)
Ready-made builds
GGUF
Running
On your own serverNeeds a GPU
Industries
Media and production
Deploy on your server Hugging Face

What it does

  • Base for fine-tuning your own styles
  • Artistic illustrations
  • Images for games

Where it is used

Design studiosGame developmentEnthusiasts and R&D

Hardware requirements

LaptopLaptop or regular PC, up to 8 GB of VRAM — smaller versions
no versions
1 GPUOne GPU with 16–80 GB — mid-size versions
fits
ClusterServer with several GPUs — flagship versions
no versions

Versions

  1. Chroma-H3 (на базе MiniMax H3, 33B)
  2. Kroma
  3. Chroma2-Kaleidoscope
  4. Chroma1-HD / Flash
  5. Chroma1-Base
  6. Chroma (превью)

How to run it

On your own serverWeights are downloaded from Hugging Face and served with vLLM (load and API) or llama.cpp (modest hardware). The model then runs in a closed network with no per-request fees.Hugging Face
How much hardware you needCalculate the VRAM for the model size, context length and number of concurrent requests.Open the hardware calculator

I can set this up end to end: pick the model size, deploy it on your server and connect it to your systems. Quantization compresses a model so it takes less video memory and runs on more modest hardware. Answers change slightly, so quality is checked on your own examples.

Frequently asked questions

Can Chroma be used in a commercial project?

With conditions. License: Apache 2.0 for Chroma and Chroma2, Krea 2 Community License for Kroma, MiniMax H3 Community License for Chroma-H3 (does not apply in the European Union, the United Kingdom, South Korea and the USA). Restrictions vary — region, company revenue, attribution requirements. Have a lawyer check the terms before a commercial launch.

What hardware does Chroma need?

At minimum: One GPU with 16–80 GB — mid-size versions. Without a GPU the model is not practical. You can calculate the exact VRAM for your model size and context in the hardware calculator.

Does Chroma support Russian?

Language does not matter for this model: it does not work with text.

Where can I download Chroma and what does it cost?

The Chroma weights are open and free to download. You only pay for the hardware it runs on and for the setup. Source links are at the bottom of this page.

How I deploy it for clients

  1. SelectionI pick the model size for your task and hardware and test it on your examples.
  2. DeploymentI deploy it on your server or in a closed network and provide an API.
  3. Fine-tuningI fine-tune it on your data (LoRA) or connect a knowledge base — whichever is cheaper for the task.
  4. IntegrationI connect it to your CRM, ERP, bot, website or team chat and set up monitoring.

Similar models

Image generationFLUXBlack Forest Labs · GermanyCommercial use with conditions

Image generation from the creators of Stable Diffusion. Renders text in images well and keeps the composition. The new FLUX.3 Image Klein (5.6B) targets ordinary graphics cards: up to 4K at once, regional editing, up to ten references; access to the weights is granted automatically after signing in on Hugging Face.

DetailsImage generationKrea 2Krea · USACommercial use with conditions

A 12B image model focused on realism without the glossy "AI look". The Turbo version produces a 2K image in a couple of seconds.

Details

Source: huggingface.co/lodestones/Kroma. Data checked against the model card on 22 Sep 2026. Have a lawyer review the license before commercial launch.