CalamitousFelicitousness/Krea-2-Base-Diffusers

Krea 2 (K2) Base - Diffusers

Diffusers-format conversion of the Krea 2 Base checkpoint, the undistilled foundation model of the Krea 2 family from Krea. The Base checkpoint carries no step or guidance distillation, which keeps it diverse and highly malleable. It is the checkpoint intended for fine-tuning, post-training, and LoRA training.

LoRAs trained on Base apply cleanly to Krea 2 Turbo, so the recommended workflow is to train on Base and run inference on Krea-2-Turbo-Diffusers.

Model Summary

Krea 2 is a latent-diffusion image model trained from scratch with an emphasis on aesthetics and stylistic control. The architecture is a single-stream multimodal diffusion transformer.

• Transformer: single-stream DiT, 12.9B parameters, 28 blocks at width 6144. Grouped-query attention, a learned output gate, per-head QK normalization, and a 3-axis rotary embedding. A text-fusion stage inside the transformer collapses twelve text-encoder hidden-state layers into one conditioning stream.
• Text encoder: Qwen/Qwen3-VL-4B-Instruct, tapped at twelve intermediate layers (text-only conditioning).
• VAE: the Qwen-Image autoencoder (AutoencoderKLQwenImage, f8, 16 latent channels).
• Sampler: flow matching with a resolution-aware timestep shift.

Weights are stored in their original mixed precision (bf16 matmuls, fp32 norms and modulations).

Recommended Settings

Base is undistilled and uses classifier-free guidance with a negative prompt.

Setting	Value
Steps	52
Guidance (CFG)	3.5
Resolution	up to 1024 x 1024

The timestep shift is resolution-aware: the conditioning interpolates the shift between low and high resolution, so no manual tuning is required across sizes.

Prompting

Natural-language prompts are recommended. Long, detailed descriptions yield the best results, though strong images are produced from short prompts as well. For text rendering, the words to be rendered are wrapped in quotes. An optional prompt-expansion system prompt is available in the upstream krea-2-oss repository.

License

The weights are released under the Krea 2 community license.

Citation

@misc{krea2,
  title  = {Krea 2},
  author = {Krea},
  year   = {2026},
  url    = {https://www.krea.ai/krea-2}
}