Model Comparison

Claude Opus 5 vs Gemma 4 E4BWhich is better in 2026?

Comparing Claude Opus 5 and Gemma 4 E4B across benchmarks, pricing, and capabilities.

Verdict: Claude Opus 5 vs Gemma 4 E4B — which is better?

Claude Opus 5 (by Anthropic) and Gemma 4 E4B (by Google) 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 Claude Opus 5 if…

  • you want the most recent training data — it shipped Jul 2026

Choose Gemma 4 E4B if…

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

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

Claude Opus 5 and Gemma 4 E4Bdon'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 Claude Opus 5 specifies input context (1,000,000 tokens). Only Claude Opus 5 specifies output context (128,000 tokens).

Anthropic
Claude Opus 5
Input1,000,000 tokens
Output128,000 tokens
Google
Gemma 4 E4B
Input- tokens
Output- tokens
Sat Jul 25 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude Opus 5 and Gemma 4 E4B support multimodal inputs.

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

Claude Opus 5

Text
Images
Audio
Video

Gemma 4 E4B

Text
Images
Audio
Video

License

Usage and distribution terms

Claude Opus 5 is licensed under a proprietary license, while Gemma 4 E4B uses Apache 2.0.

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

Claude Opus 5

Proprietary

Closed source

Gemma 4 E4B

Apache 2.0

Open weights

Release Timeline

When each model was launched

Claude Opus 5 was released on 2026-07-24, while Gemma 4 E4B was released on 2026-04-02.

Claude Opus 5 is 4 months newer than Gemma 4 E4B.

Claude Opus 5

Jul 24, 2026

1 days ago

3mo newer
Gemma 4 E4B

Apr 2, 2026

3 months ago

Knowledge Cutoff

When training data ends

Gemma 4 E4B has a documented knowledge cutoff of 2025-01-01, while Claude Opus 5's cutoff date is not specified.

We can confirm Gemma 4 E4B's training data extends to 2025-01-01, but cannot make a direct comparison without Claude Opus 5's cutoff date.

Claude Opus 5

—

Gemma 4 E4B

Jan 2025

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Anthropic
Larger context window (1,000,000 tokens)
Google
Has open weights

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Claude Opus 5 and Gemma 4 E4B side-by-side, then vote on the output you prefer.

Claude Opus 5
✓ Preferred
Gemma 4 E4B
Open in Playground
AI Model Comparison Table
Feature
Anthropic
Claude Opus 5
Google
Gemma 4 E4B

FAQ

Common questions about Claude Opus 5 vs Gemma 4 E4B.

Which is better, Claude Opus 5 or Gemma 4 E4B?

Claude Opus 5 (Anthropic) and Gemma 4 E4B (Google) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does Claude Opus 5 compare to Gemma 4 E4B in benchmarks?

Claude Opus 5 scores BrowseComp: 90.8%, BioMysteryBench: 90.1%, OSWorld 2.0: 70.6%, DeepSWE 1.1: 68.8%, Humanity's Last Exam: 64.7%. Gemma 4 E4B scores MMMLU: 76.6%, MMLU-Pro: 69.4%, MathVision: 59.5%, GPQA: 58.6%, t2-bench: 57.5%.

What are the context window sizes for Claude Opus 5 and Gemma 4 E4B?

Claude Opus 5 supports 1.0M tokens and Gemma 4 E4B 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 Claude Opus 5 and Gemma 4 E4B?

Key differences include licensing (Proprietary vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Opus 5 and Gemma 4 E4B?

Claude Opus 5 is developed by Anthropic and Gemma 4 E4B is developed by Google.

Related comparisons