Model Comparison

Gemma 3 4B vs Grok-2 miniWhich is better in 2026?

Grok-2 mini significantly outperforms across most benchmarks.

Verdict: Gemma 3 4B vs Grok-2 mini — which is better?

Gemma 3 4B (by Google) and Grok-2 mini (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.

Gemma 3 4B outperforms in 1 benchmarks (MATH), while Grok-2 mini is better at 4 benchmarks (DocVQA, GPQA, HumanEval, MMLU-Pro). Grok-2 mini significantly outperforms across most benchmarks.

Choose Gemma 3 4B if…

  • you want the most recent training data — it shipped Mar 2025
  • you need open weights you can self-host or fine-tune

Choose Grok-2 mini if…

  • you want the strongest raw capability — it leads on 4 of 5 shared benchmarks

Performance Benchmarks

Comparative analysis across standard metrics

5 benchmarks

Gemma 3 4B outperforms in 1 benchmarks (MATH), while Grok-2 mini is better at 4 benchmarks (DocVQA, GPQA, HumanEval, MMLU-Pro).

Grok-2 mini significantly outperforms across most benchmarks.

Sat Jul 18 2026 • llm-stats.com

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only Gemma 3 4B specifies input context (131,072 tokens). Only Gemma 3 4B specifies output context (131,072 tokens).

Google
Gemma 3 4B
Input131,072 tokens
Output131,072 tokens
xAI
Grok-2 mini
Input- tokens
Output- tokens
Sat Jul 18 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Gemma 3 4B and Grok-2 mini support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Gemma 3 4B

Text
Images
Audio
Video

Grok-2 mini

Text
Images
Audio
Video

License

Usage and distribution terms

Gemma 3 4B is licensed under Gemma, while Grok-2 mini uses a proprietary license.

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

Gemma 3 4B

Gemma

Open weights

Grok-2 mini

Proprietary

Closed source

Release Timeline

When each model was launched

Gemma 3 4B was released on 2025-03-12, while Grok-2 mini was released on 2024-08-13.

Gemma 3 4B is 7 months newer than Grok-2 mini.

Gemma 3 4B

Mar 12, 2025

1.4 years ago

7mo newer
Grok-2 mini

Aug 13, 2024

1.9 years ago

Knowledge Cutoff

When training data ends

Gemma 3 4B has a documented knowledge cutoff of 2024-08-01, while Grok-2 mini's cutoff date is not specified.

We can confirm Gemma 3 4B's training data extends to 2024-08-01, but cannot make a direct comparison without Grok-2 mini's cutoff date.

Gemma 3 4B

Aug 2024

Grok-2 mini

—

Outputs Comparison

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Key Takeaways

Google
Larger context window (131,072 tokens)
Has open weights
Higher MATH score (75.6% vs 73.0%)
xAI
Higher DocVQA score (93.2% vs 75.8%)
Higher GPQA score (51.0% vs 30.8%)
Higher HumanEval score (85.7% vs 71.3%)
Higher MMLU-Pro score (72.0% vs 43.6%)

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Gemma 3 4B and Grok-2 mini side-by-side, then vote on the output you prefer.

Gemma 3 4B
✓ Preferred
Grok-2 mini
Open in Playground
AI Model Comparison Table
Feature
Google
Gemma 3 4B
xAI
Grok-2 mini

FAQ

Common questions about Gemma 3 4B vs Grok-2 mini.

Which is better, Gemma 3 4B or Grok-2 mini?

Grok-2 mini significantly outperforms across most benchmarks. Gemma 3 4B is made by Google and Grok-2 mini is made by xAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Gemma 3 4B compare to Grok-2 mini in benchmarks?

Gemma 3 4B scores IFEval: 90.2%, GSM8k: 89.2%, DocVQA: 75.8%, MATH: 75.6%, AI2D: 74.8%. Grok-2 mini scores DocVQA: 93.2%, MMLU: 86.2%, HumanEval: 85.7%, MATH: 73.0%, MMLU-Pro: 72.0%.

What are the context window sizes for Gemma 3 4B and Grok-2 mini?

Gemma 3 4B supports 131K tokens and Grok-2 mini 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 Gemma 3 4B and Grok-2 mini?

Key differences include licensing (Gemma vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemma 3 4B and Grok-2 mini?

Gemma 3 4B is developed by Google and Grok-2 mini is developed by xAI.

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