It contains 8,000 generated images across 1,000 shared prompts, covering diverse artistic styles. The eight models are Qwen-Image, AuraFlow, GPT-Image-1 Mini, Stable Diffusion 3.5 Large Turbo, HiDream-I1 Fast, FLUX.2-Klein-4B, Z-Image-Turbo and Moonworks Lunara.
Each image includes scores on the three dimensions, allowing comparisons across models using the same prompts and evaluator.
Dataset: moonworks/lunara-art-eval
Paper: https://arxiv.org/abs/2609.22272
The paper also introduces Lunara’s Diffusion Mixture Transformer architecture, with fewer than 10B active parameters, and CAT, an active-learning-inspired training algorithm that iteratively updates the training distribution.
We’re a new lab focused on model architectures and training algorithms, working closely with artists and creators. Our earlier public datasets are:
- [Lunara Aesthetic I]( moonworks/lunara-aesthetic): art images with human-refined prompts and region, style and topic labels.
- [Lunara Aesthetic II]( moonworks/lunara-aesthetic-image-variations): original images paired with contextual variations.
We’d appreciate feedback from people working on image generation and evaluation, particularly on where automated scores with your judgment.