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Gemini 1.5 Flash 8B vs Gemma 2 9B

Gemini 1.5 Flash 8B and Gemma 2 9B are closely matched at -0.7 and -4.8 on the LLM Stats Score.

Google · Google · Updated for 2026

Which is better?

Gemini 1.5 Flash 8B and Gemma 2 9B are closely matched on the overall LLM Stats Score at -0.7 and -4.8.

In the 1 individual benchmarks reported for both models, Gemini 1.5 Flash 8B wins 1; 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 Gemini 1.5 Flash 8B

  • your work emphasizes reasoning — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 1 of 1 exact shared results

Choose Gemma 2 9B

  • you want the most recent training data — it shipped Jun 2024
  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

Gemini 1.5 Flash 8B
Google
Gemma 2 9B
Google
Core performance indexes
LLM Stats Score
-0.7
#329
-4.8
#352
Reasoning
-0.3
#320
-5.1
#345
Cost, coverage & limits
Benchmark wins
1 of 1
0 of 1
Input price
$0.07 / M
— / M
Output price
$0.30 / M
— / M
Context window
1,048,576
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Gemini 1.5 Flash 8B
Gemma 2 9B
Math
2.4#291
-3.8#313
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

13 reported for Gemini 1.5 Flash 8B · 16 for Gemma 2 9B

1 shared

Gemini 1.5 Flash 8B outperforms in 1 benchmarks (MATH), while Gemma 2 9B is better at 0 benchmarks.

Gemini 1.5 Flash 8B significantly outperforms across most benchmarks.

Wed Sep 09 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Model Size

Parameter count comparison

1.2B diff

Gemma 2 9B has 1.2B more parameters than Gemini 1.5 Flash 8B, making it 15.5% larger.

Google
Gemini 1.5 Flash 8B
8.0Bparameters
Google
Gemma 2 9B
9.2Bparameters
8.0B
Gemini 1.5 Flash 8B
9.2B
Gemma 2 9B

Context Window

Maximum input and output token capacity

Only Gemini 1.5 Flash 8B specifies input context (1,048,576 tokens). Only Gemini 1.5 Flash 8B specifies output context (8,192 tokens).

Google
Gemini 1.5 Flash 8B
Input1,048,576 tokens
Output8,192 tokens
Google
Gemma 2 9B
Input- tokens
Output- tokens
Wed Sep 09 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Gemini 1.5 Flash 8B supports multimodal inputs, whereas Gemma 2 9B does not.

Gemini 1.5 Flash 8B can handle both text and other forms of data like images, making it suitable for multimodal applications.

Gemini 1.5 Flash 8B

Text
Images
Audio
Video

Gemma 2 9B

Text
Images
Audio
Video

License

Usage and distribution terms

Gemini 1.5 Flash 8B is licensed under a proprietary license, while Gemma 2 9B uses Gemma.

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

Gemini 1.5 Flash 8B

Proprietary

Closed source

Gemma 2 9B

Gemma

Open weights

Release Timeline

When each model was launched

Gemini 1.5 Flash 8B was released on 2024-03-15, while Gemma 2 9B was released on 2024-06-27.

Gemma 2 9B is 3 months newer than Gemini 1.5 Flash 8B.

Gemini 1.5 Flash 8B

Mar 15, 2024

2.5 years ago

Gemma 2 9B

Jun 27, 2024

2.2 years ago

3mo newer

Knowledge Cutoff

When training data ends

Gemini 1.5 Flash 8B has a documented knowledge cutoff of 2024-10-01, while Gemma 2 9B's cutoff date is not specified.

We can confirm Gemini 1.5 Flash 8B's training data extends to 2024-10-01, but cannot make a direct comparison without Gemma 2 9B's cutoff date.

Gemini 1.5 Flash 8B

Oct 2024

Gemma 2 9B

—

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Gemini 1.5 Flash 8B and Gemma 2 9B side-by-side, then vote on the output you prefer.

Gemini 1.5 Flash 8B
✓ Preferred
Gemma 2 9B
Open in Playground

FAQ

Common questions about Gemini 1.5 Flash 8B vs Gemma 2 9B.

Which is better, Gemini 1.5 Flash 8B or Gemma 2 9B?

Gemini 1.5 Flash 8B and Gemma 2 9B are closely matched on the LLM Stats Score at -0.7 and -4.8. Gemini 1.5 Flash 8B is made by Google and Gemma 2 9B is made by Google. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Gemini 1.5 Flash 8B compare to Gemma 2 9B in benchmarks?

Gemini 1.5 Flash 8B scores XSTest: 92.6%, FLEURS: 86.4%, Natural2Code: 75.5%, WMT23: 72.6%, Video-MME: 66.2%. Gemma 2 9B scores ARC-E: 88.0%, BoolQ: 84.2%, HellaSwag: 81.9%, PIQA: 81.7%, Winogrande: 80.6%.

What are the context window sizes for Gemini 1.5 Flash 8B and Gemma 2 9B?

Gemini 1.5 Flash 8B supports 1.0M tokens and Gemma 2 9B supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Gemini 1.5 Flash 8B and Gemma 2 9B?

Key differences include LLM Stats Score (-0.7 vs -4.8), multimodal support (yes vs no), licensing (Proprietary vs Gemma). See the full comparison above for benchmark-by-benchmark results.

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