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DiffusionGemma 26B-A4B

Multimodal
Google

DiffusionGemma 26B-A4B is Google DeepMind's experimental open-weights text diffusion model based on the Gemma 4 26B-A4B Mixture-of-Experts architecture. It uses discrete diffusion to denoise 256-token canvases in parallel, targeting low-latency local and low-concurrency generation workloads with up to 4x faster text generation on dedicated GPUs. The model has 25.2 billion total parameters, 3.8 billion active parameters, a 256K context window, and multimodal text and image inputs.

Key Specifications

Parameters
25.2B
Context
-
Release Date
June 10, 2026
Average Score
56.9%

Timeline

Key dates in the model's history
Announcement
June 10, 2026
Last Update
September 10, 2026
Today
September 19, 2026

Technical Specifications

Parameters
25.2B
Training Tokens
-
Knowledge Cutoff
January 1, 2025
Family
-
Capabilities
MultimodalZeroEval

Benchmark Results

Model performance metrics across various tests and benchmarks

Reasoning

Logical reasoning and analysis
GPQA
Self-reported
73.2%

Other Tests

Specialized benchmarks
AIME 2026
No toolsSelf-reported
69.1%
BIG-Bench Extra Hard
Self-reported
47.6%
CodeForces
Elo ratingSelf-reported
47.6%
Humanity's Last Exam
With searchSelf-reported
11.9%
LiveCodeBench v6
Self-reported
69.1%
MathVision
Self-reported
70.5%
MedXpertQA
MMSelf-reported
49.0%
MMLU-Pro
Self-reported
77.6%
MMMLU
Self-reported
81.5%
MMMU-Pro
Self-reported
54.3%
MRCR v2
8 needle 128k averageSelf-reported
32.0%
t2-bench
Tau2 average over 3Self-reported
56.2%

License & Metadata

License
apache_2_0
Announcement Date
June 10, 2026
Last Updated
September 10, 2026

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