COR Brief
Conversational AI

AI21 Jamba

A family of long-context, hyper-efficient open LLMs built for the enterprise.

Updated Dec 16, 2025Pay-as-you-gov1.6

Hybrid Transformer-Mamba architecture for efficiency and performance.

Large 256K context window for processing long documents.

Mixture-of-Experts (MoE) architecture for optimized resource usage.

Open-source model, available for self-hosting and private deployments.

Pricing
$0.2 / 1M input tokens, $0.4 / 1M output tokens
Category
Conversational AI
Company
AI21 Labs
Interactive PresentationOpen Fullscreen ↗
01
Jamba combines the strengths of both Mamba (SSM) and Transformer architectures, enabling high throughput and performance while maintaining a large context window.
02
Process and analyze extremely long documents, such as financial reports, legal contracts, or entire codebases, without losing context.
03
Jamba uses an MoE architecture with 16 experts, of which 2 are active per token, to optimize performance and efficiency.
04
Jamba is an open-source model released under the Apache 2.0 license, allowing for self-hosting and custom fine-tuning.

Financial Analysis

A financial analyst needs to quickly analyze a lengthy annual report to identify key trends and risks.

Legal Document Review

A legal team needs to review thousands of contracts to identify specific clauses or potential issues.

Customer Support Chatbot

A company wants to build a chatbot that can answer customer questions based on a large knowledge base of technical documentation.

1
Step 1
Install the necessary libraries: transformers, mamba-ssm, and causal-conv1d.
2
Step 2
Download the model from Hugging Face.
3
Step 3
Load the model and tokenizer using the transformers library.
4
Step 4
Start generating text with the model.
📊

Strategic Context for AI21 Jamba

Get weekly analysis on market dynamics, competitive positioning, and implementation ROI frameworks with AI Intelligence briefings.

Try Intelligence Free →
7 days free · No credit card
Pricing
Model: Pay-as-you-go
Jamba-1.5 Mini
$0.2 / 1M input tokens, $0.4 / 1M output tokens
  • Efficient & lightweight model for a wide range of tasks.
Jamba-1.5 Large
$2 / 1M input tokens, $8 / 1M output tokens
  • Most powerful model for complex tasks.
Assessment
Strengths
  • Extremely large 256K context window.
  • Hybrid architecture offers a good balance of performance and efficiency.
  • Open-source and available for private deployments.
  • High throughput and low latency.
Limitations
  • The base model is not instruction-tuned and requires fine-tuning for specific applications.
  • Requires specific hardware (CUDA) and software dependencies to run optimized kernels.
  • Relatively new model, so the community and tooling are still growing.