Model Comparison

Gemma 3n E2B vs Grok-4 Fast ReasoningWhich is better in 2026?

Comparing Gemma 3n E2B and Grok-4 Fast Reasoning across benchmarks, pricing, and capabilities.

Verdict: Gemma 3n E2B vs Grok-4 Fast Reasoning — which is better?

Gemma 3n E2B (by Google) and Grok-4 Fast Reasoning (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 3n E2B if…

  • you are already invested in the Google ecosystem

Choose Grok-4 Fast Reasoning if…

  • you want the most recent training data — it shipped Aug 2025

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

Gemma 3n E2B and Grok-4 Fast Reasoningdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

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

Google
Gemma 3n E2B
Input- tokens
Output- tokens
xAI
Grok-4 Fast Reasoning
Input2,000,000 tokens
Output30,000 tokens
Sun Jul 26 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Gemma 3n E2B and Grok-4 Fast Reasoning support multimodal inputs.

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

Gemma 3n E2B

Text
Images
Audio
Video

Grok-4 Fast Reasoning

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Gemma 3n E2B

Proprietary

Closed source

Grok-4 Fast Reasoning

Proprietary

Closed source

Release Timeline

When each model was launched

Gemma 3n E2B was released on 2025-06-26, while Grok-4 Fast Reasoning was released on 2025-08-28.

Grok-4 Fast Reasoning is 2 months newer than Gemma 3n E2B.

Gemma 3n E2B

Jun 26, 2025

1.1 years ago

Grok-4 Fast Reasoning

Aug 28, 2025

11 months ago

2mo newer

Knowledge Cutoff

When training data ends

Gemma 3n E2B has a documented knowledge cutoff of 2024-06-01, while Grok-4 Fast Reasoning's cutoff date is not specified.

We can confirm Gemma 3n E2B's training data extends to 2024-06-01, but cannot make a direct comparison without Grok-4 Fast Reasoning's cutoff date.

Gemma 3n E2B

Jun 2024

Grok-4 Fast Reasoning

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Outputs Comparison

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Key Takeaways

Google

No standout differentiators in the data we have for this pair.

xAI
Larger context window (2,000,000 tokens)

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Gemma 3n E2B and Grok-4 Fast Reasoning side-by-side, then vote on the output you prefer.

Gemma 3n E2B
✓ Preferred
Grok-4 Fast Reasoning
Open in Playground
AI Model Comparison Table
Feature
Google
Gemma 3n E2B
xAI
Grok-4 Fast Reasoning

FAQ

Common questions about Gemma 3n E2B vs Grok-4 Fast Reasoning.

Which is better, Gemma 3n E2B or Grok-4 Fast Reasoning?

Gemma 3n E2B (Google) and Grok-4 Fast Reasoning (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 3n E2B compare to Grok-4 Fast Reasoning in benchmarks?

Gemma 3n E2B scores PIQA: 78.9%, BoolQ: 76.4%, ARC-E: 75.8%, HellaSwag: 72.2%, Winogrande: 66.8%.

What are the context window sizes for Gemma 3n E2B and Grok-4 Fast Reasoning?

Gemma 3n E2B supports an unknown number of tokens and Grok-4 Fast Reasoning supports 2.0M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

Who makes Gemma 3n E2B and Grok-4 Fast Reasoning?

Gemma 3n E2B is developed by Google and Grok-4 Fast Reasoning is developed by xAI.

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