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Gemini 4 Carbon vs Jamba 1.5 Mini

Gemini 4 Carbon leads the LLM Stats Score 59.0 to -6.1.

Google · AI21 Labs · Updated for 2026

Which is better?

Gemini 4 Carbon leads the overall LLM Stats Score 59.0 to -6.1, ranking #2 overall.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Gemini 4 Carbon

  • overall performance matters — it scores 59.0 and ranks #2 on LLM Stats
  • your work emphasizes reasoning — it leads those capability indexes
  • you want the most recent training data — it shipped Oct 2026

Choose Jamba 1.5 Mini

  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

Gemini 4 Carbon
Google
Jamba 1.5 Mini
AI21 Labs
Core performance indexes
LLM Stats Score
59.0
#2
-6.1
#396
Reasoning
54.9
#5
-6.0
#385
Cost, coverage & limits
Benchmark wins
—
—
Input price
— / M
$0.20 / M
Output price
— / M
$0.40 / M
Context window
—
256,144

Individual benchmarks

16 reported for Gemini 4 Carbon · 8 for Jamba 1.5 Mini

No common benchmarks found

Gemini 4 Carbon and Jamba 1.5 Minidon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only Jamba 1.5 Mini specifies input context (256,144 tokens). Only Jamba 1.5 Mini specifies output context (256,144 tokens).

Google
Gemini 4 Carbon
Input- tokens
Output- tokens
AI21 Labs
Jamba 1.5 Mini
Input256,144 tokens
Output256,144 tokens
Thu Oct 29 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Gemini 4 Carbon supports multimodal inputs, whereas Jamba 1.5 Mini does not.

Gemini 4 Carbon can handle both text and other forms of data like images, making it suitable for multimodal applications.

Gemini 4 Carbon

Text
Images
Audio
Video

Jamba 1.5 Mini

Text
Images
Audio
Video

License

Usage and distribution terms

Gemini 4 Carbon is licensed under a proprietary license, while Jamba 1.5 Mini uses Jamba Open Model License.

License differences may affect how you can use these models in commercial or open-source projects.

Gemini 4 Carbon

Proprietary

Closed source

Jamba 1.5 Mini

Jamba Open Model License

Open weights

Release Timeline

When each model was launched

Gemini 4 Carbon was released on 2026-10-28, while Jamba 1.5 Mini was released on 2024-08-22.

Gemini 4 Carbon is 27 months newer than Jamba 1.5 Mini.

Gemini 4 Carbon

Oct 28, 2026

-1 days ago

2.2yr newer
Jamba 1.5 Mini

Aug 22, 2024

2.2 years ago

Knowledge Cutoff

When training data ends

Jamba 1.5 Mini has a documented knowledge cutoff of 2024-03-05, while Gemini 4 Carbon's cutoff date is not specified.

We can confirm Jamba 1.5 Mini's training data extends to 2024-03-05, but cannot make a direct comparison without Gemini 4 Carbon's cutoff date.

Gemini 4 Carbon

—

Jamba 1.5 Mini

Mar 2024

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Gemini 4 Carbon and Jamba 1.5 Mini side-by-side, then vote on the output you prefer.

Gemini 4 Carbon
✓ Preferred
Jamba 1.5 Mini
Open in Playground

FAQ

Common questions about Gemini 4 Carbon vs Jamba 1.5 Mini.

Which is better, Gemini 4 Carbon or Jamba 1.5 Mini?

Gemini 4 Carbon leads the LLM Stats Score 59.0 to -6.1. Gemini 4 Carbon is made by Google and Jamba 1.5 Mini is made by AI21 Labs. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Gemini 4 Carbon compare to Jamba 1.5 Mini in benchmarks?

Gemini 4 Carbon scores Gray Swan IPI Benchmark: 100.0%, Vending-Bench 2: 100.0%, Graphwalks BFS >128k: 96.2%, WebDev Arena: 88.4%, SEC-bench Pro: 88.2%. Jamba 1.5 Mini scores ARC-C: 85.7%, GSM8k: 75.8%, MMLU: 69.7%, TruthfulQA: 54.1%, Arena Hard: 46.1%.

What are the context window sizes for Gemini 4 Carbon and Jamba 1.5 Mini?

Gemini 4 Carbon supports an unknown number of tokens and Jamba 1.5 Mini supports 256K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Gemini 4 Carbon and Jamba 1.5 Mini?

Key differences include LLM Stats Score (59.0 vs -6.1), multimodal support (yes vs no), licensing (Proprietary vs Jamba Open Model License). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 4 Carbon and Jamba 1.5 Mini?

Gemini 4 Carbon is developed by Google and Jamba 1.5 Mini is developed by AI21 Labs.

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