LLM
GA
Open weights
Jamba 2 Large
Efficient enterprise reasoning over long documents
Release2026-02
Context1M
Max output—
Parameters398B
Local / VRAM400–640 GB
LicenseOpen weights
Overview
Jamba 2 Large is a model in the LLM category from AI21 Labs. It was released in 2026-02. The vendor is based in Israel. Best for: Efficient enterprise reasoning over long documents.
Strengths
- 1M context
- Hybrid architecture
- Open weights
Limits
- No vision
- Large hardware footprint
Specifications
| Vendor | AI21 Labs |
|---|---|
| Category | LLM |
| Release | 2026-02 |
| Status | GA |
| License | Open weights |
| License name | Jamba Open Model License |
| Commercial use | Allowed |
| Parameters | 398B |
| Active parameters | 94B |
| Architecture | hybrid Mamba-Transformer MoE |
| Context window | 1M |
| Input modalities | Text |
| Output modalities | Text |
| Prompt types | Text |
| Negative prompts | No |
| Max outputs | 1 |
| Local deployment | Yes |
| VRAM | 400–640 GB |
| System RAM | 512–1024 GB |
| API access | Yes |
| Pricing | Free weights / API |
| Confidence | Medium |
| Vendor country | Israel |
| Vendor type | Frontier lab |
Pricing & hardware
Free weights / API
This model can be self-hosted or run locally. Approximate GPU memory: 400–640 GB. Approximate system RAM: 512–1024 GB. API access is available.