Noometry

Model comparison

Gemini 3 Flash Preview vs Grok 4 Heavy

Gemini 3 Flash Preview has enough public results to be ranked (#40); Grok 4 Heavy does not yet, so treat this comparison as directional.

Last verified . 1 shared benchmarks.

Gemini 3 Flash Preview Google

52.3

Rank #40 Confirmed

Grok 4 Heavy xAI

—

Unranked

Summary

  • They share 1 benchmark with published results for both.

Side by side

Gemini 3 Flash PreviewGrok 4 Heavy
ProviderGooglexAI
Noometry Index52.3—
Released2025-12-172025-07-10
WeightsProprietaryProprietary
Context window1.05M—
Max output66K—
Input $ / M tokens$0.50—
Output $ / M tokens$3—
Results tracked591

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Category by category

Coding Not comparable

Gemini 3 Flash Preview: 50.9 (#42), Grok 4 Heavy: —

BenchmarkGemini 3 Flash PreviewGrok 4 Heavy
SWE-bench Verified75.4%—
SWE-bench Verified (bash only)75.8%—
LMArena WebDev1439—
SWE-bench Multilingual72.7%—
GSO9.8%—
WeirdML61.6%—
LMArena Coding1460—
ALE-Bench1,367—

Agentic & Tool Use Not comparable

Gemini 3 Flash Preview: 38.7 (#29), Grok 4 Heavy: —

BenchmarkGemini 3 Flash PreviewGrok 4 Heavy
Terminal-Bench64.3%—
τ²-bench Airline82.5%—
τ²-bench Banking27.3%—
τ²-bench Retail76.8%—
τ²-bench Telecom91.2%—
DeepResearch Bench49.8%—
BALROG48.1%—
GDP.pdf10%—
LMArena Search1198—
Vending-Bench 23,635—

Reasoning Not comparable

Gemini 3 Flash Preview: 49.2 (#37), Grok 4 Heavy: —

BenchmarkGemini 3 Flash PreviewGrok 4 Heavy
ARC-AGI-233.6%—
SimpleBench61.1%—
NYT Connections (extended)83.1%—
ARC-AGI-184.7%—
Chess Puzzles40%—
LMArena Hard Prompts1465—
Mystery Game Puzzles26%—
DTBench89.1%—
LMCA43.1%—
Epoch Capabilities Index151.8—
ForecastBench58.5—

Math Not comparable

Gemini 3 Flash Preview: 51.7 (#55), Grok 4 Heavy: —

BenchmarkGemini 3 Flash PreviewGrok 4 Heavy
FrontierMath Tier 4 (v1)4.2%2.1%
FrontierMath (Tiers 1-3)51.2%—
FrontierMath Tier 417.1%—
MathArena Final-Answer Competitions67.6%—
OTIS Mock AIME 2024-202595.6%—
ProofBench15%—
LMArena Math1473—
FrontierMath (Feb 2025 set)35.6%—

Knowledge Not comparable

Gemini 3 Flash Preview: 58.8 (#33), Grok 4 Heavy: —

BenchmarkGemini 3 Flash PreviewGrok 4 Heavy
GPQA Diamond89.4%—
SimpleQA Verified66.8%—
Vectara Hallucination Rate13.5%—
LMArena Expert1462—

Multimodal Not comparable

Gemini 3 Flash Preview: 45.5 (#16), Grok 4 Heavy: —

BenchmarkGemini 3 Flash PreviewGrok 4 Heavy
LMArena Vision1285—
GeoBench88%—
VPCT72.6%—
Blueprint-Bench 20%—
LMArena Document1413—

Multilingual Not comparable

Gemini 3 Flash Preview: 55.7 (#27), Grok 4 Heavy: —

BenchmarkGemini 3 Flash PreviewGrok 4 Heavy
LMArena Non-English1458—
LMArena Chinese1511—
LMArena French1477—
LMArena German1497—
LMArena Japanese1489—
LMArena Korean1443—
LMArena Russian1480—
LMArena Spanish1469—

Instruction Following Not comparable

Gemini 3 Flash Preview: 75.7 (#56), Grok 4 Heavy: —

BenchmarkGemini 3 Flash PreviewGrok 4 Heavy
LMArena Instruction Following1437—

Long Context Not comparable

Gemini 3 Flash Preview: 44.4 (#67), Grok 4 Heavy: —

BenchmarkGemini 3 Flash PreviewGrok 4 Heavy
LMArena Longer Query1452—

Writing & Preference Not comparable

Gemini 3 Flash Preview: 65.5 (#45), Grok 4 Heavy: —

BenchmarkGemini 3 Flash PreviewGrok 4 Heavy
LMArena Text1466—
LMArena Creative Writing1457—
LMArena Multi-Turn1471—

Frequently asked questions

Is Gemini 3 Flash Preview better than Grok 4 Heavy?

Gemini 3 Flash Preview has enough public results to be ranked (#40); Grok 4 Heavy does not yet, so treat this comparison as directional.

How many benchmarks do Gemini 3 Flash Preview and Grok 4 Heavy share?

1 benchmark has published results for both models. Gemini 3 Flash Preview has 59 scored results on Noometry and Grok 4 Heavy has 1.

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