Model Comparison
Jamba 1.5 Large vs Qwen3.8 MaxWhich is better in 2026?
Qwen3.8 Max significantly outperforms across most benchmarks.
Verdict: Jamba 1.5 Large vs Qwen3.8 Max — which is better?
Jamba 1.5 Large (by AI21 Labs) and Qwen3.8 Max (by Alibaba Cloud / Qwen Team) 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.
Jamba 1.5 Large outperforms in 0 benchmarks, while Qwen3.8 Max is better at 1 benchmark (GPQA). Qwen3.8 Max significantly outperforms across most benchmarks.
Choose Jamba 1.5 Large if…
- you need open weights you can self-host or fine-tune
Choose Qwen3.8 Max if…
- you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
- you want the most recent training data — it shipped Aug 2026
Performance Benchmarks
Comparative analysis across standard metrics
Jamba 1.5 Large outperforms in 0 benchmarks, while Qwen3.8 Max is better at 1 benchmark (GPQA).
Qwen3.8 Max significantly outperforms across most benchmarks.
Arena Performance
Human preference votes
Model Size
Parameter count comparison
Qwen3.8 Max has 2002.0B more parameters than Jamba 1.5 Large, making it 503.0% larger.
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).
Input Capabilities
Supported data types and modalities
Qwen3.8 Max supports multimodal inputs, whereas Jamba 1.5 Large does not.
Qwen3.8 Max can handle both text and other forms of data like images, making it suitable for multimodal applications.
Jamba 1.5 Large
Qwen3.8 Max
License
Usage and distribution terms
Jamba 1.5 Large is licensed under Jamba Open Model License, while Qwen3.8 Max uses a proprietary license.
License differences may affect how you can use these models in commercial or open-source projects.
Jamba Open Model License
Open weights
Proprietary
Closed source
Release Timeline
When each model was launched
Jamba 1.5 Large was released on 2024-08-22, while Qwen3.8 Max was released on 2026-08-02.
Qwen3.8 Max is 24 months newer than Jamba 1.5 Large.
Aug 22, 2024
2.0 years ago
Aug 2, 2026
2 days ago
1.9yr newerKnowledge Cutoff
When training data ends
Jamba 1.5 Large has a documented knowledge cutoff of 2024-03-05, while Qwen3.8 Max'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 Qwen3.8 Max's cutoff date.
Mar 2024
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Outputs Comparison
Key Takeaways
Jamba 1.5 Large
View detailsAI21 Labs
Qwen3.8 Max
View detailsAlibaba Cloud / Qwen Team
Detailed Comparison
Interactive Arena
Judge for yourself.
Run your own prompts against Jamba 1.5 Large and Qwen3.8 Max side-by-side, then vote on the output you prefer.
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FAQ
Common questions about Jamba 1.5 Large vs Qwen3.8 Max.