GoKawiilLinum releases Pyramid-JiT, a decoder-only text-to-image model trained without a VAE
Linum's research team has published Pyramid-JiT (P-JiT), a new decoder-only pixel-space architecture that predicts images at multiple resolutions through the diffusion transformer trunk, building on their earlier VAE-free JiT-DDT model. The company says P-JiT matches the final FD-DINOv2 score of its Linum v2 model using 11.3 times fewer training samples and 4.3 times fewer GPU-hours, while operating at four times the pixel resolution. Code and weights have been released under an Apache 2.0 license as a research artifact rather than a finished product.