Model Comparison

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

Grok-2 significantly outperforms across most benchmarks. Gemma 3 4B is 160.0x cheaper per token.

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

Gemma 3 4B (by Google) and Grok-2 (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 0 benchmarks, while Grok-2 is better at 5 benchmarks (DocVQA, GPQA, HumanEval, MATH, MMLU-Pro). Grok-2 significantly outperforms across most benchmarks.

On price, Gemma 3 4B is roughly 160.0x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Gemma 3 4B also accepts a larger context window (131,072 input tokens), making it the stronger choice for long documents and large codebases.

Choose Gemma 3 4B if…

  • cost matters — it's about 160.0x cheaper per token
  • you process long inputs — it offers a 131,072 token context window
  • 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 if…

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

Performance Benchmarks

Comparative analysis across standard metrics

5 benchmarks

Gemma 3 4B outperforms in 0 benchmarks, while Grok-2 is better at 5 benchmarks (DocVQA, GPQA, HumanEval, MATH, MMLU-Pro).

Grok-2 significantly outperforms across most benchmarks.

Mon Jul 20 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Gemma 3 4B costs less

For input processing, Gemma 3 4B ($0.02/1M tokens) is 100.0x cheaper than Grok-2 ($2.00/1M tokens).

For output processing, Gemma 3 4B ($0.04/1M tokens) is 250.0x cheaper than Grok-2 ($10.00/1M tokens).

In conclusion, Grok-2 is more expensive than Gemma 3 4B.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Mon Jul 20 2026 • llm-stats.com
Google
Gemma 3 4B
Input tokens$0.02
Output tokens$0.04
Best providerDeepinfra
xAI
Grok-2
Input tokens$2.00
Output tokens$10.00
Best providerxAI
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Gemma 3 4B accepts 131,072 input tokens compared to Grok-2's 128,000 tokens. Gemma 3 4B can generate longer responses up to 131,072 tokens, while Grok-2 is limited to 8,000 tokens.

Google
Gemma 3 4B
Input131,072 tokens
Output131,072 tokens
xAI
Grok-2
Input128,000 tokens
Output8,000 tokens
Mon Jul 20 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Gemma 3 4B and Grok-2 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

Text
Images
Audio
Video

License

Usage and distribution terms

Gemma 3 4B 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 3 4B

Gemma

Open weights

Grok-2

Proprietary

Closed source

Release Timeline

When each model was launched

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

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

Gemma 3 4B

Mar 12, 2025

1.4 years ago

7mo newer
Grok-2

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'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's cutoff date.

Gemma 3 4B

Aug 2024

Grok-2

—

Provider Availability

Gemma 3 4B is available from DeepInfra. Grok-2 is available from xAI.

Gemma 3 4B

deepinfra logo
Deepinfra
Input Price:Input: $0.02/1MOutput Price:Output: $0.04/1M

Grok-2

xai logo
xAI
Input Price:Input: $2.00/1MOutput Price:Output: $10.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Google
Larger context window (131,072 tokens)
Less expensive input tokens
Less expensive output tokens
Has open weights
xAI
Higher DocVQA score (93.6% vs 75.8%)
Higher GPQA score (56.0% vs 30.8%)
Higher HumanEval score (88.4% vs 71.3%)
Higher MATH score (76.1% vs 75.6%)
Higher MMLU-Pro score (75.5% vs 43.6%)

Detailed Comparison

Interactive Arena

Judge for yourself.

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

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

FAQ

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

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

Grok-2 significantly outperforms across most benchmarks. Gemma 3 4B is made by Google and Grok-2 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 in benchmarks?

Gemma 3 4B scores IFEval: 90.2%, GSM8k: 89.2%, DocVQA: 75.8%, MATH: 75.6%, AI2D: 74.8%. Grok-2 scores DocVQA: 93.6%, HumanEval: 88.4%, MMLU: 87.5%, MATH: 76.1%, MMLU-Pro: 75.5%.

Is Gemma 3 4B cheaper than Grok-2?

Gemma 3 4B is 100.0x cheaper for input tokens. Gemma 3 4B costs $0.02/M input and $0.04/M output via deepinfra. Grok-2 costs $2.00/M input and $10.00/M output via xai.

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

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

Key differences include context window (131K vs 128K), input pricing ($0.02 vs $2.00/M), licensing (Gemma vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemma 3 4B and Grok-2?

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

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