Kroma v0.2 — Krea 2 fine-tune (full model, quantized to ComfyUI formats)

Kroma is a fine-tune of Krea 2 by Lodestone-Rock. This repo contains quantized .safetensors files in various ComfyUI formats of the Kroma model.

Running in ComfyUI

1. Requirements

• A recent ComfyUI with native Krea 2 support (update to the latest master).
• The Krea 2 text encoder and VAE (the diffusion model is this repo — no separate base checkpoint needed).

2. Files to download

Place these in your ComfyUI folders:

3. Sampling settings

The Krea 2 Turbo delta is merged in, so sample with Turbo settings:

These are the settings the Turbo checkpoint was distilled for; keep them for best results.

4. Workflow

1. Load Diffusion Model → select kroma-v0.2-turbo.safetensors.
2. Load CLIP → the Krea 2 text encoder, set type to krea2.
3. Load VAE → the Krea 2 VAE.
4. KSampler → steps / CFG / shift per the table above.
5. Prompt and generate.

Minimal node chain:

Load Diffusion Model (kroma-v0.2) ─► KSampler ─► VAE Decode ─► Save Image
Load CLIP (krea2) ─────────────────► (clip)       ▲
Load VAE ───────────────────────────────────────┘
Empty Latent / prompt ────────────────────────────►

5. Tips

• If the output looks off, confirm the text encoder is loaded with type krea2 (Krea 2 expects a 12-layer Qwen3-VL stack) and that you're on a current ComfyUI.

Provenance

v0.2 was produced by continued full fine-tuning of the K2 (Krea 2) checkpoint behind Kroma v0.1 — without the rank-256 LoRA delta compression used for the v0.1 release — followed by merging the Krea 2 Turbo delta in as a rank-512 LoRA.

License

MIT — see LICENSE. Note that Krea 2 is governed by its own license; this fine-tune does not grant any rights to the base weights.