Gemma 2 9B vs Jamba 1.5 Mini
Gemma 2 9B and Jamba 1.5 Mini are closely matched at -4.8 and -5.5 on the LLM Stats Score.
Google · AI21 Labs · Updated for 2026
Which is better?
Gemma 2 9B and Jamba 1.5 Mini are closely matched on the overall LLM Stats Score at -4.8 and -5.5.
In the 3 individual benchmarks reported for both models, Jamba 1.5 Mini wins 2; this is a narrower head-to-head signal than the composite indexes.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Gemma 2 9B
- you are already invested in the Google ecosystem
Choose Jamba 1.5 Mini
- you value its reported benchmark strengths — it wins 2 of 3 exact shared results
- you want the most recent training data — it shipped Aug 2024
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
16 reported for Gemma 2 9B · 8 for Jamba 1.5 Mini
Gemma 2 9B outperforms in 1 benchmarks (MMLU), while Jamba 1.5 Mini is better at 2 benchmarks (ARC-C, GSM8k).
Jamba 1.5 Mini shows notably better performance in the majority of benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Model Size
Parameter count comparison
Jamba 1.5 Mini has 42.8B more parameters than Gemma 2 9B, making it 462.8% larger.
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).
License
Usage and distribution terms
Gemma 2 9B is licensed under Gemma, 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.
Gemma
Open weights
Jamba Open Model License
Open weights
Release Timeline
When each model was launched
Gemma 2 9B was released on 2024-06-27, while Jamba 1.5 Mini was released on 2024-08-22.
Jamba 1.5 Mini is 2 months newer than Gemma 2 9B.
Jun 27, 2024
2.2 years ago
Aug 22, 2024
2.0 years ago
1mo newerKnowledge Cutoff
When training data ends
Jamba 1.5 Mini has a documented knowledge cutoff of 2024-03-05, while Gemma 2 9B'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 Gemma 2 9B's cutoff date.
—
Mar 2024
Outputs Comparison
Judge for yourself.
Run your own prompts against Gemma 2 9B and Jamba 1.5 Mini side-by-side, then vote on the output you prefer.
FAQ
Common questions about Gemma 2 9B vs Jamba 1.5 Mini.