Noometry

Model comparison

Gemma 3 12B vs Grok 4 Fast

Grok 4 Fast is the stronger model overall, scoring 39.4 to 32.1 on the Noometry Index.

Last verified . 15 shared benchmarks.

Gemma 3 12B Google

32.1

Rank #262 Confirmed

Grok 4 Fast xAI

39.4

Rank #167 Confirmed

Summary

  • They share 15 benchmarks with published results for both. Gemma 3 12B scores higher in 0 categories and Grok 4 Fast in 9 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in long context, where Grok 4 Fast leads 63.2 to 40.0.
  • The biggest single-benchmark swing is DTBench: 48.8% for Gemma 3 12B and 82.7% for Grok 4 Fast.
  • Gemma 3 12B has downloadable open weights; the other is API-only.

Side by side

Gemma 3 12BGrok 4 Fast
ProviderGooglexAI
Noometry Index32.139.4
Released2025-03-122025-09-19
WeightsOpenProprietary
Context window131K—
Max output8K—
Input $ / M tokens$0.05—
Output $ / M tokens$0.15—
Results tracked2430

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Category by category

Coding Too close to call

Gemma 3 12B: 31.7 (#280), Grok 4 Fast: 32.5 (#271)

BenchmarkGemma 3 12BGrok 4 Fast
LMArena Coding12811429
LMArena WebDev—1159
SciCode17.4%—
WeirdML—42.9%

Agentic & Tool Use Grok 4 Fast leads

Gemma 3 12B: 25.5 (#108), Grok 4 Fast: 29.5 (#86)

BenchmarkGemma 3 12BGrok 4 Fast
Berkeley Function Calling Leaderboard30.4%—
τ²-bench Banking—15.7%
Cybench—30%
LMArena Search—1171

Reasoning Grok 4 Fast leads

Gemma 3 12B: 15.7 (#313), Grok 4 Fast: 22.2 (#201)

BenchmarkGemma 3 12BGrok 4 Fast
LMArena Hard Prompts13091412
DTBench48.8%82.7%
Epoch Capabilities Index123.5144.2
ARC-AGI-2—5.3%
Kagi LLM Benchmark—66.1%
ARC-AGI-1—48.5%
CritPt0%—
Chess Puzzles0%—
LMCA4.5%—
ForecastBench—60.5

Math Grok 4 Fast leads

Gemma 3 12B: 22.3 (#279), Grok 4 Fast: 38.9 (#123)

BenchmarkGemma 3 12BGrok 4 Fast
LMArena Math13071419
OTIS Mock AIME 2024-202516.7%—

Knowledge Grok 4 Fast leads

Gemma 3 12B: 26.5 (#257), Grok 4 Fast: 32.0 (#214)

BenchmarkGemma 3 12BGrok 4 Fast
Vectara Hallucination Rate4.4%19.7%
LMArena Expert12481411
GPQA Diamond39.5%—

Multimodal Not comparable

Gemma 3 12B: —, Grok 4 Fast: —

BenchmarkGemma 3 12BGrok 4 Fast
MindCube46.7%—

Multilingual Grok 4 Fast leads

Gemma 3 12B: 45.7 (#165), Grok 4 Fast: 51.3 (#111)

BenchmarkGemma 3 12BGrok 4 Fast
LMArena Non-English13181396
LMArena German13701383
LMArena Russian13351389
LMArena Chinese—1457
LMArena French—1431
LMArena Japanese—1352
LMArena Korean—1357
LMArena Spanish—1415

Instruction Following Grok 4 Fast leads

Gemma 3 12B: 68.6 (#186), Grok 4 Fast: 73.2 (#121)

BenchmarkGemma 3 12BGrok 4 Fast
LMArena Instruction Following12991387

Long Context Grok 4 Fast leads

Gemma 3 12B: 40.0 (#162), Grok 4 Fast: 63.2 (#3)

BenchmarkGemma 3 12BGrok 4 Fast
LMArena Longer Query13171415
Fiction.LiveBench—94.4%

Writing & Preference Grok 4 Fast leads

Gemma 3 12B: 47.5 (#209), Grok 4 Fast: 60.0 (#102)

BenchmarkGemma 3 12BGrok 4 Fast
LMArena Text13341407
LMArena Creative Writing13311387
LMArena Multi-Turn13341414
EQ-Bench Creative Writing1126—

Frequently asked questions

Is Gemma 3 12B better than Grok 4 Fast?

Grok 4 Fast is the stronger model overall, scoring 39.4 to 32.1 on the Noometry Index.

Is Gemma 3 12B or Grok 4 Fast better for coding?

They score almost the same on coding (31.7 vs 32.5); test both on your own repository before choosing.

How many benchmarks do Gemma 3 12B and Grok 4 Fast share?

15 benchmarks have published results for both models. Gemma 3 12B has 24 scored results on Noometry and Grok 4 Fast has 30.

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