Model Comparison

Gemma 2 9B vs Grok-4 HeavyWhich is better in 2026?

Comparing Gemma 2 9B and Grok-4 Heavy across benchmarks, pricing, and capabilities.

Verdict: Gemma 2 9B vs Grok-4 Heavy — which is better?

Gemma 2 9B (by Google) and Grok-4 Heavy (by xAI) 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 Gemma 2 9B if…

  • you need open weights you can self-host or fine-tune

Choose Grok-4 Heavy if…

  • you are already invested in the xAI ecosystem

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

Gemma 2 9B and Grok-4 Heavydon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Input Capabilities

Supported data types and modalities

Grok-4 Heavy supports multimodal inputs, whereas Gemma 2 9B does not.

Grok-4 Heavy 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-4 Heavy

Text
Images
Audio
Video

License

Usage and distribution terms

Gemma 2 9B is licensed under Gemma, while Grok-4 Heavy 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-4 Heavy

Proprietary

Closed source

Release Timeline

When each model was launched

Gemma 2 9B was released on 2024-06-27, while Grok-4 Heavy's release date is not specified.

We can confirm Gemma 2 9B's release timeline, but cannot make a direct age comparison without Grok-4 Heavy's release date.

Gemma 2 9B

Jun 27, 2024

2.1 years ago

Grok-4 Heavy

—

Knowledge Cutoff

When training data ends

Grok-4 Heavy has a documented knowledge cutoff of 2024-12-31, while Gemma 2 9B's cutoff date is not specified.

We can confirm Grok-4 Heavy's training data extends to 2024-12-31, but cannot make a direct comparison without Gemma 2 9B's cutoff date.

Gemma 2 9B

—

Grok-4 Heavy

Dec 2024

Outputs Comparison

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Key Takeaways

Google
Has open weights
xAI
Supports multimodal inputs

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Gemma 2 9B and Grok-4 Heavy side-by-side, then vote on the output you prefer.

Gemma 2 9B
✓ Preferred
Grok-4 Heavy
Open in Playground
AI Model Comparison Table
Feature
Google
Gemma 2 9B
xAI
Grok-4 Heavy

FAQ

Common questions about Gemma 2 9B vs Grok-4 Heavy.

Which is better, Gemma 2 9B or Grok-4 Heavy?

Gemma 2 9B (Google) and Grok-4 Heavy (xAI) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does Gemma 2 9B compare to Grok-4 Heavy in benchmarks?

Gemma 2 9B scores ARC-E: 88.0%, BoolQ: 84.2%, HellaSwag: 81.9%, PIQA: 81.7%, Winogrande: 80.6%. Grok-4 Heavy scores AIME 2025: 100.0%, HMMT25: 96.7%, GPQA: 88.4%, LiveCodeBench: 79.4%, USAMO25: 61.9%.

What are the main differences between Gemma 2 9B and Grok-4 Heavy?

Key differences include 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-4 Heavy?

Gemma 2 9B is developed by Google and Grok-4 Heavy is developed by xAI.

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