Shanghai AI Laboratory logo

Intern Lumina U2

Shanghai AI LaboratoryOpen WeightsPending Human Review

Intern Lumina U2 is a unified language-capable multimodal diffusion model covering text questions, visual understanding, image generation, and editing. Its sparse 16B backbone activates 1B parameters and uses an eight-codebook discrete visual tokenizer. The Ascend-trained weights are publicly available; the NVIDIA-trained checkpoint, training code, and report remain future work. Code publication in August preceded the September weight release. Primary catalogs verify the release month; the exact first-public day remains unverified and is not inferred from private repository or API creation metadata.

2026-09
16B total, 1B active
Multi-codebook diffusion Mixture of Experts
Apache-2.0

Specifications

Parameters
16B total, 1B active
Architecture
Multi-codebook diffusion Mixture of Experts
License
Apache-2.0
Type
multimodal
Modalities
textimage

Benchmark Scores

Advanced Specifications

Model Family
Intern
API Access
Not Available
Chat Interface
Not Available

Capabilities & Limitations

Capabilities
visual understanding and generationlanguage generationmodel research
Known Limitations
Checkpoint capacity and evaluation limits differLarge weights need substantial inference resourcesResearch metrics are provider-reported
Notable Use Cases
scientific assistantsmultimodal researchprivate model experimentation

Related Models