Model Comparison

DiffusionGemma 26B-A4B vs Gemma 4 12BWhich is better in 2026?

Gemma 4 12B shows notably better performance in the majority of benchmarks.

Verdict: DiffusionGemma 26B-A4B vs Gemma 4 12B — which is better?

DiffusionGemma 26B-A4B (by Google) and Gemma 4 12B (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.

DiffusionGemma 26B-A4B outperforms in 4 benchmarks (Humanity's Last Exam, MedXpertQA, MMLU-Pro, OmniDocBench 1.5), while Gemma 4 12B is better at 8 benchmarks (AIME 2026, BIG-Bench Extra Hard, CodeForces, GPQA, LiveCodeBench v6, MathVision, MMMLU, MMMU-Pro). Gemma 4 12B shows notably better performance in the majority of benchmarks.

Choose DiffusionGemma 26B-A4B if…

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

Choose Gemma 4 12B if…

  • you want the strongest raw capability — it leads on 8 of 12 shared benchmarks

Performance Benchmarks

Comparative analysis across standard metrics

12 benchmarks

DiffusionGemma 26B-A4B outperforms in 4 benchmarks (Humanity's Last Exam, MedXpertQA, MMLU-Pro, OmniDocBench 1.5), while Gemma 4 12B is better at 8 benchmarks (AIME 2026, BIG-Bench Extra Hard, CodeForces, GPQA, LiveCodeBench v6, MathVision, MMMLU, MMMU-Pro).

Gemma 4 12B shows notably better performance in the majority of benchmarks.

Fri Jul 17 2026 • llm-stats.com

Arena Performance

Human preference votes

Model Size

Parameter count comparison

13.2B diff

DiffusionGemma 26B-A4B has 13.2B more parameters than Gemma 4 12B, making it 110.7% larger.

Google
DiffusionGemma 26B-A4B
25.2Bparameters
Google
Gemma 4 12B
12.0Bparameters
25.2B
DiffusionGemma 26B-A4B
12.0B
Gemma 4 12B

Input Capabilities

Supported data types and modalities

Both DiffusionGemma 26B-A4B and Gemma 4 12B support multimodal inputs.

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

DiffusionGemma 26B-A4B

Text
Images
Audio
Video

Gemma 4 12B

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under Apache 2.0.

Both models share the same licensing terms, providing consistent usage rights.

DiffusionGemma 26B-A4B

Apache 2.0

Open weights

Gemma 4 12B

Apache 2.0

Open weights

Release Timeline

When each model was launched

DiffusionGemma 26B-A4B was released on 2026-06-10, while Gemma 4 12B was released on 2026-05-23.

DiffusionGemma 26B-A4B is 1 month newer than Gemma 4 12B.

DiffusionGemma 26B-A4B

Jun 10, 2026

1 months ago

2w newer
Gemma 4 12B

May 23, 2026

1 months ago

Knowledge Cutoff

When training data ends

Both models have the same knowledge cutoff date of 2025-01-01.

They should have similar awareness of historical events and information up to this date.

DiffusionGemma 26B-A4B

Jan 2025

Gemma 4 12B

Jan 2025

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Google
Higher Humanity's Last Exam score (11.9% vs 5.2%)
Higher MedXpertQA score (49.0% vs 48.7%)
Higher MMLU-Pro score (77.6% vs 77.2%)
Higher OmniDocBench 1.5 score (31.9% vs 16.4%)
Google
Higher AIME 2026 score (77.5% vs 69.1%)
Higher BIG-Bench Extra Hard score (53.0% vs 47.6%)
Higher CodeForces score (55.3% vs 47.6%)
Higher GPQA score (78.8% vs 73.2%)
Higher LiveCodeBench v6 score (72.0% vs 69.1%)
Higher MathVision score (79.7% vs 70.5%)
Higher MMMLU score (83.4% vs 81.5%)
Higher MMMU-Pro score (69.1% vs 54.3%)

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against DiffusionGemma 26B-A4B and Gemma 4 12B side-by-side, then vote on the output you prefer.

DiffusionGemma 26B-A4B
✓ Preferred
Gemma 4 12B
Open in Playground
AI Model Comparison Table
Feature
Google
DiffusionGemma 26B-A4B
Google
Gemma 4 12B

FAQ

Common questions about DiffusionGemma 26B-A4B vs Gemma 4 12B.

Which is better, DiffusionGemma 26B-A4B or Gemma 4 12B?

Gemma 4 12B shows notably better performance in the majority of benchmarks. DiffusionGemma 26B-A4B is made by Google and Gemma 4 12B is made by Google. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does DiffusionGemma 26B-A4B compare to Gemma 4 12B in benchmarks?

DiffusionGemma 26B-A4B scores MMMLU: 81.5%, MMLU-Pro: 77.6%, GPQA: 73.2%, MathVision: 70.5%, AIME 2026: 69.1%. Gemma 4 12B scores FLEURS: 93.1%, MMMLU: 83.4%, MathVision: 79.7%, GPQA: 78.8%, AIME 2026: 77.5%.

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