Intern Lumina U2
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