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Gemma 2 9B vs Grok-2

Grok-2 leads the LLM Stats Score 11.5 to -4.8.

Google · xAI · Updated for 2026

Which is better?

Grok-2 leads the overall LLM Stats Score 11.5 to -4.8, ranking #256 overall.

In the 3 individual benchmarks reported for both models, Grok-2 wins 3; 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 need open weights you can self-host or fine-tune

Choose Grok-2

  • overall performance matters — it scores 11.5 and ranks #256 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 3 of 3 exact shared results
  • you want the most recent training data — it shipped Aug 2024

At a glance

The differences that matter most.

Core performance indexes
-4.8
#352
11.5
#256
-5.1
#345
11.5
#253
-11.0
#263
9.2
#173
Cost, coverage & limits
Benchmark wins
0 of 3
3 of 3
Input price
— / M
$2.00 / M
Output price
— / M
$10.00 / M
Context window
128,000

Capability indexes

Additional strengths measured across groups of related public benchmarks

2 shared
Index
Gemma 2 9B
Grok-2
-3.8#313
18.2#182
-0.1#183
18.6#78
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

16 reported for Gemma 2 9B · 8 for Grok-2

3 shared

Gemma 2 9B outperforms in 0 benchmarks, while Grok-2 is better at 3 benchmarks (HumanEval, MATH, MMLU).

Grok-2 significantly outperforms across most benchmarks.

Wed Sep 09 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only Grok-2 specifies input context (128,000 tokens). Only Grok-2 specifies output context (8,000 tokens).

Google
Gemma 2 9B
Input- tokens
Output- tokens
xAI
Grok-2
Input128,000 tokens
Output8,000 tokens
Wed Sep 09 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Grok-2 supports multimodal inputs, whereas Gemma 2 9B does not.

Grok-2 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Gemma 2 9B

Text
Images
Audio
Video

Grok-2

Text
Images
Audio
Video

License

Usage and distribution terms

Gemma 2 9B is licensed under Gemma, while Grok-2 uses a proprietary license.

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

Gemma 2 9B

Gemma

Open weights

Grok-2

Proprietary

Closed source

Release Timeline

When each model was launched

Gemma 2 9B was released on 2024-06-27, while Grok-2 was released on 2024-08-13.

Grok-2 is 2 months newer than Gemma 2 9B.

Gemma 2 9B

Jun 27, 2024

2.2 years ago

Grok-2

Aug 13, 2024

2.1 years ago

1mo newer

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion

Judge for yourself.

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

Gemma 2 9B
✓ Preferred
Grok-2
Open in Playground

FAQ

Common questions about Gemma 2 9B vs Grok-2.

Which is better, Gemma 2 9B or Grok-2?

Grok-2 leads the LLM Stats Score 11.5 to -4.8. Gemma 2 9B is made by Google and Grok-2 is made by xAI. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Gemma 2 9B compare to Grok-2 in benchmarks?

Gemma 2 9B scores ARC-E: 88.0%, BoolQ: 84.2%, HellaSwag: 81.9%, PIQA: 81.7%, Winogrande: 80.6%. Grok-2 scores DocVQA: 93.6%, HumanEval: 88.4%, MMLU: 87.5%, MATH: 76.1%, MMLU-Pro: 75.5%.

What are the context window sizes for Gemma 2 9B and Grok-2?

Gemma 2 9B supports an unknown number of tokens and Grok-2 supports 128K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Gemma 2 9B and Grok-2?

Key differences include LLM Stats Score (-4.8 vs 11.5), multimodal support (no vs yes), licensing (Gemma vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemma 2 9B and Grok-2?

Gemma 2 9B is developed by Google and Grok-2 is developed by xAI.