Overview
AI21 Labs Jamba 1.5 Large is a foundation model built from groundbreaking hybrid architecture, leveraging both the novel Mamba architecture and traditional Transformer architecture to achieve leading quality at the best price.
By drawing on its SSM-Transformer hybrid architecture, as well as its impressive 256K context window, Jamba 1.5 Large efficiently solves a variety of text generation and comprehension use cases for the enterprise. Its 94B active parameters and 398B total parameters lead to superior accuracy in responses.
Jamba 1.5 Large is ideal for enterprise workflows with tasks that are data-heavy and require a model to be able to ingest a large amount of information in order to produce an accurate and thorough response, such as summarizing lengthy documents or enabling question answering across an extensive organizational knowledge base. Jamba 1.5 Large is a model designed for superior quality responses, high throughput and attractive price compared to other models in its size class.
Use cases:
- Multi-document analysis: Summarize or compare across multiple documents at once to identify key points and insights. For example, summarizing 8 years worth of 10-K financial reports of a public company.
- Multi-document question answering: Query multiple documents, records, or policies in a database. For example, powering a customer-facing chatbot and 15 thorough Q&A exchanges referencing 50 pages of support articles per question.
- Organizational search assistant: Improve the retrieval stage of a RAG system for organizational data, resulting in higher quality answers. For example, an internal agent assistant can hold up to 800 pages of organizational data in its context window to provide accurate and thorough responses.
Highlights
- At least 2.5X faster than competitors in its size category.
- Supports 256K context window, the largest openly available.
- Deliver competitive quality performance, ranking amongst the top models in its size class.
Details
Unlock automation with AI agent solutions

Features and programs
Financing for AWS Marketplace purchases
Pricing
Dimension | Cost/unit |
---|---|
Price per 1 million input tokens | $2.00 |
Price per 1 million output tokens | $8.00 |
Vendor refund policy
No Refunds
How can we make this page better?
Legal
Vendor terms and conditions
Content disclaimer
Delivery details
Software as a Service (SaaS)
SaaS delivers cloud-based software applications directly to customers over the internet. You can access these applications through a subscription model. You will pay recurring monthly usage fees through your AWS bill, while AWS handles deployment and infrastructure management, ensuring scalability, reliability, and seamless integration with other AWS services.
Resources
Support
Vendor support
We'd love to hear any thoughts, feedback, or questions directly. Or just email us to tell us about the awesome app you're building with our models: support-amazon@ai21.comÂ
AWS infrastructure support
AWS Support is a one-on-one, fast-response support channel that is staffed 24x7x365 with experienced and technical support engineers. The service helps customers of all sizes and technical abilities to successfully utilize the products and features provided by Amazon Web Services.
Similar products

