Model Comparison

Gemma 4 31B vs Muse SparkWhich is better in 2026?

Muse Spark significantly outperforms across most benchmarks.

Verdict: Gemma 4 31B vs Muse Spark — which is better?

Gemma 4 31B (by Google) and Muse Spark (by Meta) 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 4 31B outperforms in 0 benchmarks, while Muse Spark is better at 5 benchmarks (GDPval-AA, GPQA, Humanity's Last Exam, MedXpertQA, MMMU-Pro). Muse Spark significantly outperforms across most benchmarks.

Choose Gemma 4 31B if…

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

Choose Muse Spark if…

  • you want the strongest raw capability — it leads on 5 of 5 shared benchmarks
  • you want the most recent training data — it shipped Apr 2026

Performance Benchmarks

Comparative analysis across standard metrics

5 benchmarks

Gemma 4 31B outperforms in 0 benchmarks, while Muse Spark is better at 5 benchmarks (GDPval-AA, GPQA, Humanity's Last Exam, MedXpertQA, MMMU-Pro).

Muse Spark significantly outperforms across most benchmarks.

Fri Jul 17 2026 • llm-stats.com

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only Gemma 4 31B specifies input context (262,144 tokens). Only Gemma 4 31B specifies output context (131,072 tokens).

Google
Gemma 4 31B
Input262,144 tokens
Output131,072 tokens
Meta
Muse Spark
Input- tokens
Output- tokens
Fri Jul 17 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Gemma 4 31B and Muse Spark support multimodal inputs.

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

Gemma 4 31B

Text
Images
Audio
Video

Muse Spark

Text
Images
Audio
Video

License

Usage and distribution terms

Gemma 4 31B is licensed under Apache 2.0, while Muse Spark uses a proprietary license.

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

Gemma 4 31B

Apache 2.0

Open weights

Muse Spark

Proprietary

Closed source

Release Timeline

When each model was launched

Gemma 4 31B was released on 2026-04-02, while Muse Spark was released on 2026-04-08.

Muse Spark is 0 month newer than Gemma 4 31B.

Gemma 4 31B

Apr 2, 2026

3 months ago

Muse Spark

Apr 8, 2026

3 months ago

6d newer

Knowledge Cutoff

When training data ends

Gemma 4 31B has a documented knowledge cutoff of 2025-01-01, while Muse Spark's cutoff date is not specified.

We can confirm Gemma 4 31B's training data extends to 2025-01-01, but cannot make a direct comparison without Muse Spark's cutoff date.

Gemma 4 31B

Jan 2025

Muse Spark

—

Outputs Comparison

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Key Takeaways

Google
Larger context window (262,144 tokens)
Has open weights
Meta
Higher GDPval-AA score (38.8% vs 26.1%)
Higher GPQA score (89.5% vs 84.3%)
Higher Humanity's Last Exam score (58.4% vs 26.5%)
Higher MedXpertQA score (78.4% vs 61.3%)
Higher MMMU-Pro score (80.4% vs 76.9%)

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Gemma 4 31B and Muse Spark side-by-side, then vote on the output you prefer.

Gemma 4 31B
✓ Preferred
Muse Spark
Open in Playground
AI Model Comparison Table
Feature
Google
Gemma 4 31B
Meta
Muse Spark

FAQ

Common questions about Gemma 4 31B vs Muse Spark.

Which is better, Gemma 4 31B or Muse Spark?

Muse Spark significantly outperforms across most benchmarks. Gemma 4 31B is made by Google and Muse Spark is made by Meta. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Gemma 4 31B compare to Muse Spark in benchmarks?

Gemma 4 31B scores AIME 2026: 89.2%, MMMLU: 88.4%, t2-bench: 86.4%, MathVision: 85.6%, MMLU-Pro: 85.2%. Muse Spark scores Tau2 Telecom: 91.5%, GPQA: 89.5%, CharXiv-R: 86.4%, ScreenSpot Pro: 84.1%, IPhO 2025: 82.6%.

What are the context window sizes for Gemma 4 31B and Muse Spark?

Gemma 4 31B supports 262K tokens and Muse Spark 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 4 31B and Muse Spark?

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

Who makes Gemma 4 31B and Muse Spark?

Gemma 4 31B is developed by Google and Muse Spark is developed by Meta.

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