ByteDance releases Seed3D 2.0 3D generator
ByteDance Seed has released Seed3D 2.0, a single-image 3D generation model that it says beats existing models on geometry and PBR materials, and has put it on a live API.
ByteDance's Seed team announced Seed3D 2.0 on April 23, 2026. It is the follow-up to Seed3D 1.0, which generated 3D models from a single image. The team has published a technical report, and the model is available through an API on Volcano Engine as Doubao-Seed3D-2.0.
The main change is in geometry. Seed3D 1.0 generated an object's overall structure and its fine details at the same time, which the team says sometimes softened sharp edges and fine structures. Version 2.0 splits the job into two stages. First, a larger DiT generates the coarse structure. A second stage then uses that output as geometric anchors to recover sharp edges and surface detail. It relies on two priors: the coarse result is encoded as latents to initialize the second stage, and points sampled from its surface are voxelized and used as positional encodings. The team also upgraded the VAE, which it says reconstructs shapes more accurately with fewer tokens.
For textures, Seed3D 2.0 replaces the 1.0 pipeline, which generated RGB first and then broke it down into PBR materials, with a single PBR model. That model keeps the MMDiT dual-stream architecture and adds modality-specific projection layers. ByteDance says the old cascade let errors build up from step to step.
ByteDance says the model achieved state-of-the-art results in both geometry and texture. The evidence is in-house: 60 evaluators with 3D modeling experience ran blind pairwise comparisons against six baseline models on about 200 test cases. The company says evaluators preferred Seed3D 2.0 over every baseline on geometry. The material reviewed here does not give exact preference rates or name the baseline models.