DreamX-Creator: native joint audio-video generation at 2K resolution

DreamX-Creator 1.0 is a 7B model that generates synchronized audio and video jointly from a first frame and text prompt, instead of dubbing video in post-processing. It couples modality-specialized streams via Gated Cross-Modal Attention, applies modality-aware RL post-training, and uses an autoregressive 1-step refinement to reach 2K resolution, matching state-of-the-art open-source systems. The authors plan to release the 7B generator and 2K refiner.