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Jamba 1.5 Mini (SSM)vsClaude Opus 4

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

Jamba 1.5 Mini (SSM) leads 4/5 categories

Head-to-Head Comparison

MetricJamba 1.5 Mini (SSM)Claude Opus 4
Provider
Arena Rank
#1
Context Window
256K
200K
Input Pricing
/bin/zsh.20/1M tokens
$5.00/1M tokens
Output Pricing
/bin/zsh.40/1M tokens
$25.00/1M tokens
Parameters
52B (12B active)
Undisclosed
Open Source
Yes
No
Best For
Efficient long-context processing, throughput
Complex reasoning, coding, agentic tasks
Release Date
Mar 28, 2024
May 22, 2025

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 →

Claude Opus 4

Claude Opus 4 is Anthropic's most powerful AI model, holding the #1 position on the Chatbot Arena leaderboard. It represents a breakthrough in extended thinking and agentic capabilities, able to work autonomously on complex multi-step tasks for hours. With a 200K token context window, it excels at analyzing entire codebases, lengthy legal documents, and research papers in a single pass. The model demonstrates exceptional performance in coding (setting new benchmarks on SWE-bench), advanced reasoning, and nuanced writing tasks. Its agentic capabilities allow it to use tools, navigate computers, and execute multi-step workflows with minimal human oversight. Opus 4 is the preferred choice for enterprises requiring the highest quality output on mission-critical tasks where accuracy and depth matter more than speed or cost.

View Anthropic profile →

Key Differences: Jamba 1.5 Mini (SSM) vs Claude Opus 4

1

Jamba 1.5 Mini (SSM) is 50.0x cheaper on average, making it the better choice for high-volume applications.

2

Jamba 1.5 Mini (SSM) supports a larger context window (256K), allowing it to process longer documents in a single request.

3

Jamba 1.5 Mini (SSM) is open-source (free to self-host and fine-tune) while Claude Opus 4 is proprietary (API-only access).

J

When to use Jamba 1.5 Mini (SSM)

  • +Budget is a concern and you need cost efficiency
  • +You need to process long documents (256K context)
  • +You need to self-host or fine-tune the model
  • +Your use case involves efficient long-context processing, throughput
View full Jamba 1.5 Mini (SSM) specs →
C

When to use Claude Opus 4

  • +Quality matters more than cost
  • +You prefer a managed API without infrastructure overhead
  • +Your use case involves complex reasoning, coding, agentic tasks
View full Claude Opus 4 specs →

Cost Analysis

At current pricing, Jamba 1.5 Mini (SSM) is 50.0x more affordable than Claude Opus 4. 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)

Claude Opus 4 monthly cost

$1,500

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

The Verdict

Jamba 1.5 Mini (SSM) wins our head-to-head comparison with 4 out of 5 category wins. It's the stronger choice for efficient long-context processing, throughput, though Claude Opus 4 holds an edge in complex reasoning, coding, agentic tasks.

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 Claude Opus 4?
In our head-to-head comparison, Jamba 1.5 Mini (SSM) leads in 4 out of 5 categories (arena rank, context window, input pricing, output pricing, and parameters). Jamba 1.5 Mini (SSM) excels at efficient long-context processing, throughput, while Claude Opus 4 is better suited for complex reasoning, coding, agentic tasks. The best choice depends on your specific requirements, budget, and use case.
How does Jamba 1.5 Mini (SSM) pricing compare to Claude Opus 4?
Jamba 1.5 Mini (SSM) charges /bin/zsh.20 per 1M input tokens and /bin/zsh.40 per 1M output tokens. Claude Opus 4 charges $5.00 per 1M input tokens and $25.00 per 1M output tokens. Jamba 1.5 Mini (SSM) is the more affordable option, approximately 50.0x cheaper on average. 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 Claude Opus 4?
Jamba 1.5 Mini (SSM) supports a 256K token context window, while Claude Opus 4 supports 200K tokens. Jamba 1.5 Mini (SSM) can process longer documents, codebases, and conversations in a single request. Context window size matters most for tasks involving long documents, large codebases, or extended conversations.
Can I use Jamba 1.5 Mini (SSM) or Claude Opus 4 for free?
Jamba 1.5 Mini (SSM) is a paid API model starting at /bin/zsh.20 per 1M input tokens. Claude Opus 4 is a paid API model starting at $5.00 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 Claude Opus 4?
Jamba 1.5 Mini (SSM)'s arena rank is not yet available, while Claude Opus 4 holds rank #1. 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 Claude Opus 4 better for coding?
Jamba 1.5 Mini (SSM)'s primary strength is efficient long-context processing, throughput. Claude Opus 4 is specifically optimized for coding tasks. For coding specifically, arena rank and code-specific benchmarks are the best indicators of performance.