Model Comparison

Grok-1.5V vs Jamba 1.5 LargeWhich is better in 2026?

Comparing Grok-1.5V and Jamba 1.5 Large across benchmarks, pricing, and capabilities.

Verdict: Grok-1.5V vs Jamba 1.5 Large — which is better?

Grok-1.5V (by xAI) and Jamba 1.5 Large (by AI21 Labs) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

Choose Grok-1.5V if…

  • you are already invested in the xAI ecosystem

Choose Jamba 1.5 Large if…

  • you want the most recent training data — it shipped Aug 2024
  • you need open weights you can self-host or fine-tune
Want to compare interactively?Try the playground

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

Grok-1.5V and Jamba 1.5 Largedon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only Jamba 1.5 Large specifies input context (256,000 tokens). Only Jamba 1.5 Large specifies output context (256,000 tokens).

xAI
Grok-1.5V
Input- tokens
Output- tokens
AI21 Labs
Jamba 1.5 Large
Input256,000 tokens
Output256,000 tokens
Sat Jun 13 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Grok-1.5V supports multimodal inputs, whereas Jamba 1.5 Large does not.

Grok-1.5V can handle both text and other forms of data like images, making it suitable for multimodal applications.

Grok-1.5V

Text
Images
Audio
Video

Jamba 1.5 Large

Text
Images
Audio
Video

License

Usage and distribution terms

Grok-1.5V is licensed under a proprietary license, while Jamba 1.5 Large uses Jamba Open Model License.

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

Grok-1.5V

Proprietary

Closed source

Jamba 1.5 Large

Jamba Open Model License

Open weights

Release Timeline

When each model was launched

Grok-1.5V was released on 2024-04-12, while Jamba 1.5 Large was released on 2024-08-22.

Jamba 1.5 Large is 4 months newer than Grok-1.5V.

Grok-1.5V

Apr 12, 2024

2.2 years ago

Jamba 1.5 Large

Aug 22, 2024

1.8 years ago

4mo newer

Knowledge Cutoff

When training data ends

Jamba 1.5 Large has a documented knowledge cutoff of 2024-03-05, while Grok-1.5V's cutoff date is not specified.

We can confirm Jamba 1.5 Large's training data extends to 2024-03-05, but cannot make a direct comparison without Grok-1.5V's cutoff date.

Grok-1.5V

—

Jamba 1.5 Large

Mar 2024

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

xAI
Supports multimodal inputs
AI21 Labs
Larger context window (256,000 tokens)
Has open weights

Detailed Comparison

AI Model Comparison Table
Feature
xAI
Grok-1.5V
AI21 Labs
Jamba 1.5 Large

FAQ

Common questions about Grok-1.5V vs Jamba 1.5 Large.

Which is better, Grok-1.5V or Jamba 1.5 Large?

Grok-1.5V (xAI) and Jamba 1.5 Large (AI21 Labs) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does Grok-1.5V compare to Jamba 1.5 Large in benchmarks?

Grok-1.5V scores AI2D: 88.3%, DocVQA: 85.6%, TextVQA: 78.1%, ChartQA: 76.1%, RealWorldQA: 68.7%. Jamba 1.5 Large scores ARC-C: 93.0%, GSM8k: 87.0%, MMLU: 81.2%, Arena Hard: 65.4%, TruthfulQA: 58.3%.

What are the context window sizes for Grok-1.5V and Jamba 1.5 Large?

Grok-1.5V supports an unknown number of tokens and Jamba 1.5 Large 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 Grok-1.5V and Jamba 1.5 Large?

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

Who makes Grok-1.5V and Jamba 1.5 Large?

Grok-1.5V is developed by xAI and Jamba 1.5 Large is developed by AI21 Labs.

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