Model Comparison

Gemma 3 1B vs Grok 4 FastWhich is better in 2026?

Grok 4 Fast significantly outperforms across most benchmarks.

Verdict: Gemma 3 1B vs Grok 4 Fast — which is better?

Gemma 3 1B (by Google) and Grok 4 Fast (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 1B outperforms in 0 benchmarks, while Grok 4 Fast is better at 3 benchmarks (GPQA, LiveCodeBench, SimpleQA). Grok 4 Fast significantly outperforms across most benchmarks.

Choose Gemma 3 1B if…

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

Choose Grok 4 Fast if…

  • you want the strongest raw capability — it leads on 3 of 3 shared benchmarks
  • you want the most recent training data — it shipped Aug 2025

Performance Benchmarks

Comparative analysis across standard metrics

3 benchmarks

Gemma 3 1B outperforms in 0 benchmarks, while Grok 4 Fast is better at 3 benchmarks (GPQA, LiveCodeBench, SimpleQA).

Grok 4 Fast significantly outperforms across most benchmarks.

Tue Jul 21 2026 • llm-stats.com

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only Grok 4 Fast specifies input context (2,000,000 tokens). Only Grok 4 Fast specifies output context (30,000 tokens).

Google
Gemma 3 1B
Input- tokens
Output- tokens
xAI
Grok 4 Fast
Input2,000,000 tokens
Output30,000 tokens
Tue Jul 21 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Grok 4 Fast supports multimodal inputs, whereas Gemma 3 1B does not.

Grok 4 Fast can handle both text and other forms of data like images, making it suitable for multimodal applications.

Gemma 3 1B

Text
Images
Audio
Video

Grok 4 Fast

Text
Images
Audio
Video

License

Usage and distribution terms

Gemma 3 1B is licensed under Gemma, while Grok 4 Fast uses a proprietary license.

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

Gemma 3 1B

Gemma

Open weights

Grok 4 Fast

Proprietary

Closed source

Release Timeline

When each model was launched

Gemma 3 1B was released on 2025-03-12, while Grok 4 Fast was released on 2025-08-28.

Grok 4 Fast is 6 months newer than Gemma 3 1B.

Gemma 3 1B

Mar 12, 2025

1.4 years ago

Grok 4 Fast

Aug 28, 2025

10 months ago

5mo 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→

Key Takeaways

Google
Has open weights
xAI
Larger context window (2,000,000 tokens)
Supports multimodal inputs
Higher GPQA score (85.7% vs 19.2%)
Higher LiveCodeBench score (80.0% vs 1.9%)
Higher SimpleQA score (95.0% vs 2.2%)

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Gemma 3 1B and Grok 4 Fast side-by-side, then vote on the output you prefer.

Gemma 3 1B
✓ Preferred
Grok 4 Fast
Open in Playground
AI Model Comparison Table
Feature
Google
Gemma 3 1B
xAI
Grok 4 Fast

FAQ

Common questions about Gemma 3 1B vs Grok 4 Fast.

Which is better, Gemma 3 1B or Grok 4 Fast?

Grok 4 Fast significantly outperforms across most benchmarks. Gemma 3 1B is made by Google and Grok 4 Fast is made by xAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Gemma 3 1B compare to Grok 4 Fast in benchmarks?

Gemma 3 1B scores IFEval: 80.2%, GSM8k: 62.8%, Natural2Code: 56.0%, MATH: 48.0%, HumanEval: 41.5%. Grok 4 Fast scores SimpleQA: 95.0%, HMMT 2025: 93.3%, AIME 2025: 92.0%, GPQA: 85.7%, LiveCodeBench: 80.0%.

What are the context window sizes for Gemma 3 1B and Grok 4 Fast?

Gemma 3 1B supports an unknown number of tokens and Grok 4 Fast supports 2.0M 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 1B and Grok 4 Fast?

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 3 1B and Grok 4 Fast?

Gemma 3 1B is developed by Google and Grok 4 Fast is developed by xAI.

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