Jamba 1.5
Jamba 1.5 is an AI21 language-model release. Jamba 1.5 introduces instruction-tuned Mini and Large tiers for grounded enterprise conversation and tool workflows. It retains the hybrid state-space/attention structure and long context, while downloadable weights use AI21’s custom license rather than the original base model’s Apache license. Long context does not guarantee complete retrieval or factual correctness, and deployed throughput depends on hardware, precision, and prompt length.
2024-08-22
Mini 52B/12B active; Large 398B/94B active
Hybrid Mamba state-space / Transformer; MoE in larger tiers
Jamba Open Model License
Specifications
- Parameters
- Mini 52B/12B active; Large 398B/94B active
- Architecture
- Hybrid Mamba state-space / Transformer; MoE in larger tiers
- License
- Jamba Open Model License
- Context Window
- 262,144 tokens
- Type
- text
- Modalities
- text
Benchmark Scores
Advanced Specifications
- Model Family
- Jamba
- API Access
- Available
- Chat Interface
- Not Available
- Variants
- MiniLarge
Capabilities & Limitations
- Capabilities
- text generationlong contextinstruction following
- Known Limitations
- Long-input quality requires task evaluationLicense and weight footprint vary by tier
- Notable Use Cases
- enterprise question answeringdocument assistantsprivate deployment