SenseNova-U1.5: 8B encoder-free unified model does visual understanding and generation in one
KyeGomezB · x · 2026-09-14
SenseTime's SenseNova-U1.5 is an 8B-MoT natively unified multimodal model with an encoder-free, VAE-free architecture that understands, reasons about, generates, and edits images directly in pixel space, including native 4K generation.
Key details:
- Strengthens its visual interface via spatially coherent patch reconstruction, scaled with curated generation/editing data, improved task formulation, and structural prompt enhancement
- Post-training optimizes specialist experts for visual aesthetics, bilingual text rendering, infographic generation, and image editing, consolidated through multi-expert on-policy distillation
- Evaluations show major gains in image fidelity, text rendering, complex composition, multi-reference editing, and interleaved generation while preserving instruction following, subject identity, and unmodified regions
The paper argues visual understanding and generation can share one native representation rather than separate systems.
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