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Jamba 1.5 Mini (SSM)vsJamba 1.5 Mini

AI21 Labs vs AI21 Labs — Side-by-side model comparison

Tied — both models win in equal categories

Head-to-Head Comparison

MetricJamba 1.5 Mini (SSM)Jamba 1.5 Mini
Provider
Arena Rank
Context Window
256K
256K
Input Pricing
/bin/zsh.20/1M tokens
$0.20/1M tokens
Output Pricing
/bin/zsh.40/1M tokens
$0.40/1M tokens
Parameters
52B (12B active)
52B (12B active)
Open Source
Yes
Yes
Best For
Efficient long-context processing, throughput
Cost-effective long-context, summarization
Release Date
Mar 28, 2024
Aug 22, 2024

Jamba 1.5 Mini (SSM)

Jamba is AI21 Labs' pioneering hybrid architecture that combines Mamba state-space model layers with transformer attention layers. This novel approach achieves 3x throughput improvement over pure transformer models of equivalent quality. The Jamba architecture represents a significant step toward more efficient AI models that can process long contexts without the quadratic cost of full attention.

View AI21 Labs profile →

Jamba 1.5 Mini

Jamba 1.5 Mini is AI21 Labs' efficient model sharing the same hybrid SSM-Transformer architecture as its larger sibling. At 52 billion total parameters with only 12 billion active, it delivers strong performance on long-context tasks while being highly cost-effective. The 256K context window combined with low inference costs makes it particularly attractive for applications processing large volumes of documents.

View AI21 Labs profile →

Key Differences: Jamba 1.5 Mini (SSM) vs Jamba 1.5 Mini

1

Jamba 1.5 Mini (SSM) has 52B (12B active) parameters vs Jamba 1.5 Mini's 52B (12B active), which affects inference speed and capability.

J

When to use Jamba 1.5 Mini (SSM)

  • +Your use case involves efficient long-context processing, throughput
View full Jamba 1.5 Mini (SSM) specs →
J

When to use Jamba 1.5 Mini

  • +Your use case involves cost-effective long-context, summarization
View full Jamba 1.5 Mini specs →

Cost Analysis

Both models have similar pricing. For a typical enterprise workload processing 100M tokens per month:

Jamba 1.5 Mini (SSM) monthly cost

$30

100M tokens/mo (50/50 in/out)

Jamba 1.5 Mini monthly cost

$30

100M tokens/mo (50/50 in/out)

The Verdict

This is a close matchup. Jamba 1.5 Mini (SSM) and Jamba 1.5 Mini each win in different categories, making the choice highly dependent on your use case. Choose Jamba 1.5 Mini (SSM) for efficient long-context processing, throughput. Choose Jamba 1.5 Mini for cost-effective long-context, summarization.

Last compared: March 2026 · Data sourced from public benchmarks and official pricing pages

Frequently Asked Questions

Which is better, Jamba 1.5 Mini (SSM) or Jamba 1.5 Mini?
Jamba 1.5 Mini (SSM) and Jamba 1.5 Mini are closely matched, each winning in different categories. Jamba 1.5 Mini (SSM) excels at efficient long-context processing, throughput, while Jamba 1.5 Mini is optimized for cost-effective long-context, summarization. We recommend testing both for your specific use case.
How does Jamba 1.5 Mini (SSM) pricing compare to Jamba 1.5 Mini?
Jamba 1.5 Mini (SSM) charges /bin/zsh.20 per 1M input tokens and /bin/zsh.40 per 1M output tokens. Jamba 1.5 Mini charges $0.20 per 1M input tokens and $0.40 per 1M output tokens. For high-volume production workloads, the pricing difference can significantly impact total cost of ownership.
What is the context window difference between Jamba 1.5 Mini (SSM) and Jamba 1.5 Mini?
Jamba 1.5 Mini (SSM) supports a 256K token context window, while Jamba 1.5 Mini supports 256K tokens. Context window size matters most for tasks involving long documents, large codebases, or extended conversations.
Can I use Jamba 1.5 Mini (SSM) or Jamba 1.5 Mini for free?
Jamba 1.5 Mini (SSM) is a paid API model starting at /bin/zsh.20 per 1M input tokens. Jamba 1.5 Mini is a paid API model starting at $0.20 per 1M input tokens. Open-source models can be self-hosted for free but require your own GPU infrastructure.
Which model has better benchmarks, Jamba 1.5 Mini (SSM) or Jamba 1.5 Mini?
Jamba 1.5 Mini (SSM)'s arena rank is not yet available, while Jamba 1.5 Mini's rank is not yet available. Note that benchmarks don't capture every use case — we recommend testing both models on your specific tasks.
Is Jamba 1.5 Mini (SSM) or Jamba 1.5 Mini better for coding?
Jamba 1.5 Mini (SSM)'s primary strength is efficient long-context processing, throughput. Jamba 1.5 Mini's primary strength is cost-effective long-context, summarization. For coding specifically, arena rank and code-specific benchmarks are the best indicators of performance.