Noometry

Model comparison

Gemma 4 26B A4B IT vs Grok 4 Fast

Gemma 4 26B A4B IT is the stronger model overall, scoring 43.5 to 39.4 on the Noometry Index.

Last verified . 19 shared benchmarks.

Gemma 4 26B A4B IT Google

43.5

Rank #92 Confirmed

Grok 4 Fast xAI

39.4

Rank #167 Confirmed

Summary

  • They share 19 benchmarks with published results for both. Gemma 4 26B A4B IT scores higher in 5 categories and Grok 4 Fast in 3 categories; 7 gaps are clear of the uncertainty.
  • The widest gap is in long context, where Grok 4 Fast leads 63.2 to 43.6.
  • The biggest single-benchmark swing is Vectara Hallucination Rate: 5.2% for Gemma 4 26B A4B IT and 19.7% for Grok 4 Fast.
  • Gemma 4 26B A4B IT has downloadable open weights; the other is API-only.

Side by side

Gemma 4 26B A4B ITGrok 4 Fast
ProviderGooglexAI
Noometry Index43.539.4
Released2026-04-022025-09-19
WeightsOpenProprietary
Context window262K—
Max output33K—
Input $ / M tokens$0.0675—
Output $ / M tokens$0.23—
Results tracked2830

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Category by category

Coding Gemma 4 26B A4B IT leads

Gemma 4 26B A4B IT: 39.0 (#164), Grok 4 Fast: 32.5 (#271)

BenchmarkGemma 4 26B A4B ITGrok 4 Fast
LMArena WebDev13591159
WeirdML35.2%42.9%
LMArena Coding14471429
SciCode40%—
ALE-Bench927.17—

Agentic & Tool Use Not comparable

Gemma 4 26B A4B IT: —, Grok 4 Fast: 29.5 (#86)

BenchmarkGemma 4 26B A4B ITGrok 4 Fast
τ²-bench Banking—15.7%
Cybench—30%
LMArena Search—1171

Reasoning Too close to call

Gemma 4 26B A4B IT: 21.8 (#213), Grok 4 Fast: 22.2 (#201)

BenchmarkGemma 4 26B A4B ITGrok 4 Fast
LMArena Hard Prompts14391412
DTBench74.9%82.7%
Epoch Capabilities Index141.85144.2
ARC-AGI-2—5.3%
Kagi LLM Benchmark—66.1%
ARC-AGI-1—48.5%
CritPt0%—
Chess Puzzles6%—
LMCA29.7%—
ForecastBench—60.5

Math Gemma 4 26B A4B IT leads

Gemma 4 26B A4B IT: 47.6 (#67), Grok 4 Fast: 38.9 (#123)

BenchmarkGemma 4 26B A4B ITGrok 4 Fast
LMArena Math14701419
OTIS Mock AIME 2024-202582.2%—

Knowledge Gemma 4 26B A4B IT leads

Gemma 4 26B A4B IT: 45.7 (#85), Grok 4 Fast: 32.0 (#214)

BenchmarkGemma 4 26B A4B ITGrok 4 Fast
Vectara Hallucination Rate5.2%19.7%
LMArena Expert14471411
GPQA Diamond73.2%—

Multimodal Not comparable

Gemma 4 26B A4B IT: 40.6 (#46), Grok 4 Fast: —

BenchmarkGemma 4 26B A4B ITGrok 4 Fast
LMArena Vision1260—

Multilingual Gemma 4 26B A4B IT leads

Gemma 4 26B A4B IT: 53.1 (#71), Grok 4 Fast: 51.3 (#111)

BenchmarkGemma 4 26B A4B ITGrok 4 Fast
LMArena Non-English14211396
LMArena Chinese14951457
LMArena French14601431
LMArena Russian14341389
LMArena Spanish14171415
LMArena German—1383
LMArena Japanese—1352
LMArena Korean—1357

Instruction Following Gemma 4 26B A4B IT leads

Gemma 4 26B A4B IT: 74.8 (#82), Grok 4 Fast: 73.2 (#121)

BenchmarkGemma 4 26B A4B ITGrok 4 Fast
LMArena Instruction Following14201387

Long Context Grok 4 Fast leads

Gemma 4 26B A4B IT: 43.6 (#91), Grok 4 Fast: 63.2 (#3)

BenchmarkGemma 4 26B A4B ITGrok 4 Fast
LMArena Longer Query14281415
Fiction.LiveBench—94.4%

Writing & Preference Grok 4 Fast leads

Gemma 4 26B A4B IT: 58.6 (#115), Grok 4 Fast: 60.0 (#102)

BenchmarkGemma 4 26B A4B ITGrok 4 Fast
LMArena Text14341407
LMArena Creative Writing14021387
LMArena Multi-Turn14411414
EQ-Bench Creative Writing1305—

Frequently asked questions

Is Gemma 4 26B A4B IT better than Grok 4 Fast?

Gemma 4 26B A4B IT is the stronger model overall, scoring 43.5 to 39.4 on the Noometry Index.

Is Gemma 4 26B A4B IT or Grok 4 Fast better for coding?

Gemma 4 26B A4B IT scores higher on coding benchmarks: 39.0 versus 32.5 in the Noometry coding category.

How many benchmarks do Gemma 4 26B A4B IT and Grok 4 Fast share?

19 benchmarks have published results for both models. Gemma 4 26B A4B IT has 28 scored results on Noometry and Grok 4 Fast has 30.

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