Plain-English Summary
AI21’s enterprise flagship for long documents, retrieval, and production language applications.
Jamba Large
AI21’s enterprise flagship for long documents, retrieval, and production language applications.
Jamba
General LLM
GA
Open weights: No / model dependent
API: Yes
Technical Notes
Hybrid Mamba-Transformer architecture designed for efficient 256K long-context processing and enterprise deployment.
Best For
Long documents, enterprise RAG, summarization, business assistants
Watch Out For
Text-focused and less widely supported than the largest ecosystem models.
Model Specs
- Maker
- AI21 Labs
- Country
- Israel
- Family
- Jamba
- Type
- General LLM
- Release date
- 2024-08-21
- Date confidence
- Exact / family launch
- Status
- GA
- Context window
- 262,144 tokens
- Max output
- Not listed
- Parameters
- Not disclosed
- Active parameters
- Not disclosed
- Architecture
- Hybrid Mamba-Transformer
- Reasoning
- General reasoning
- Tool calling
- Yes
- Structured output
- Yes
- API available
- Yes
- Open weights
- No / model dependent
- Self-hostable
- Private deployment options
- License
- Proprietary
- Inputs
- Text
- Outputs
- Text
- Approx. price
- See provider pricing
- How to access
- Provider website or API
- Model / API ID
- jamba-large
- Knowledge cutoff
- Not publicly disclosed
- Fine-tuning
- Fine-tuning, private deployment, RAG
- Completeness
- 86 %
- Verified
- Jul 18, 2026
- Snapshot date
- Jul 18, 2026
- Source
- Official source