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DiffusionGemma 26B A4B

DiffusionGemma 26B A4B is a Google open-weights reasoning model, released 10 Jun 2026. Its best configuration ranks #515 of 785 on the BenchLeader Index at 45.4 ±7.2, in the lower half. The ± is the point: 412 other configurations score within that range, so they and this one cannot be told apart on quality alone — price and speed are what separate them. It scores highest in instruction following (60) and lowest in long context (34). Last measured 10 Jun 2026.

Blended price
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Output speed
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First answer
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Context
256k
Full answer
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Cost per run
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Released
10 Jun 2026
How it scores by categoryDashed line = average model (50). One step of 15 = one standard deviation.
  1. Overall index45
  2. Reasoning41
  3. Knowledge35
  4. Instruction following60
  5. Multimodal49
  6. Long context34
  7. Composite40

How its index has moved

9 Sept 2026 to 21 Oct 2026
384654

The index is recomputed from scratch every day, so a line moves when a new benchmark result lands, when a publisher revises a score, or when the models it is normalised against change. Early movement usually means the score is still settling.

Benchmark results

See all LLM benchmarks. One column per reasoning effort. Rank is among every configuration of every model on that benchmark. Hover a score for the run it came from.

Reasoning

Benchmarknot statedSourceTrend
GPQA Diamond (AA)not in index66.9%#327Artificial Analysis
Humanity's Last Exam (AA)not in index10.8%#309Artificial Analysis
CritPt0.3%#271Artificial Analysis

Coding

Benchmarknot statedSourceTrend
Terminal-Bench 2.1 (AA)not in index12.4%#188Artificial Analysis

Agents & tools

Benchmarknot statedSourceTrend
GDPval-AA v2.1not in index0.0%#124Artificial Analysis

Knowledge

Instruction following

Benchmarknot statedSourceTrend
IFBench59.5%#129Artificial Analysis

Multimodal

Benchmarknot statedSourceTrend
MMMU-Pro66.5%#171Artificial Analysis

Long context

Benchmarknot statedSourceTrend
AA-LCR19.7%#437Artificial Analysis

Composite

Benchmarknot statedSourceTrend
AA Intelligence Index v4.3.29.5#396Artificial Analysis

More from Google

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See also

Questions people ask

What are DiffusionGemma 26B A4B's benchmark scores?
As of 25 Oct 2026, DiffusionGemma 26B A4B scores 45.4 ±7.2 on the BenchLeader Index, strongest in instruction following (60) and weakest in long context (34). That rests on 6 independent benchmark results, and every score on this page links to its publisher.
How does DiffusionGemma 26B A4B rank?
DiffusionGemma 26B A4B is #515 of 785 ranked configurations on 25 Oct 2026. 412 other configurations score within its margin, so the exact position matters less than the band. The leader is Claude Opus 5.5 (max effort) at 72.6.
When was DiffusionGemma 26B A4B released?
Google released DiffusionGemma 26B A4B on 10 Jun 2026.

Data as of 25 Oct 2026. Compare with another model.

Cite as: BenchLeader, “DiffusionGemma 26B A4B: benchmarks, pricing, speed and rank”, data as of 25 Oct 2026, https://www.benchleader.com/models/diffusiongemma-26b-a4b.