Noometry

Model comparison

Gemini 3.8 Flash vs Grok 4.1

Gemini 3.8 Flash is the stronger model overall, scoring 61.8 to 41.5 on the Noometry Index.

Last verified . 18 shared benchmarks.

Gemini 3.8 Flash Google

61.8

Rank #11 Confirmed

Grok 4.1 xAI

41.5

Rank #134 Confirmed

Summary

  • They share 18 benchmarks with published results for both. Gemini 3.8 Flash scores higher in 9 categories and Grok 4.1 in 0 categories; 9 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Gemini 3.8 Flash leads 76.9 to 29.5.

Side by side

Gemini 3.8 FlashGrok 4.1
ProviderGooglexAI
Noometry Index61.841.5
Released2026-09-022025-11-17
WeightsProprietaryProprietary
Context window1.05M—
Max output66K—
Input $ / M tokens$0.75—
Output $ / M tokens$3.75—
Results tracked5019

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Category by category

Coding Gemini 3.8 Flash leads

Gemini 3.8 Flash: 59.2 (#15), Grok 4.1: 33.7 (#253)

BenchmarkGemini 3.8 FlashGrok 4.1
LMArena WebDev15841214
LMArena Coding15101445
DeepSWE73.8%—
FrontierCode41.2%—
CursorBench39.6%—
FrontierSWE19.6%—
SciCode56.6%—
WeirdML84.8%—
ALE-Bench1,270—

Agentic & Tool Use Gemini 3.8 Flash leads

Gemini 3.8 Flash: 41.8 (#21), Grok 4.1: 34.1 (#49)

BenchmarkGemini 3.8 FlashGrok 4.1
APEX-Agents64.3%—
Remote Labor Index5.8%—
Cybench—39%
GDP.pdf23.4%—
Vending-Bench 25,094—

Reasoning Gemini 3.8 Flash leads

Gemini 3.8 Flash: 76.9 (#5), Grok 4.1: 29.5 (#91)

BenchmarkGemini 3.8 FlashGrok 4.1
LMArena Hard Prompts15081435
ARC-AGI-289.2%—
NYT Connections (extended)97.4%—
ARC-AGI-198.5%—
CritPt18.3%—
Chess Puzzles61%—
Mystery Game Puzzles47%—
DTBench95.7%—
LMCA52.9%—
Surface Evolver Bench76.9%—
Epoch Capabilities Index156.71—

Math Gemini 3.8 Flash leads

Gemini 3.8 Flash: 65.3 (#28), Grok 4.1: 38.9 (#120)

BenchmarkGemini 3.8 FlashGrok 4.1
LMArena Math15281422
FrontierMath (Tiers 1-3)68.4%—
FrontierMath Tier 422%—
OTIS Mock AIME 2024-202598.9%—
ProofBench48%—

Knowledge Gemini 3.8 Flash leads

Gemini 3.8 Flash: 74.8 (#2), Grok 4.1: 39.5 (#133)

BenchmarkGemini 3.8 FlashGrok 4.1
LMArena Expert15241417
GPQA Diamond95.4%—
Humanity's Last Exam44.5%—
SimpleQA Verified69.7%—

Multimodal Not comparable

Gemini 3.8 Flash: 40.7 (#45), Grok 4.1: —

BenchmarkGemini 3.8 FlashGrok 4.1
LMArena Vision1314—
Blueprint-Bench 238.6%—
Furniture Assembly31.7%—

Multilingual Gemini 3.8 Flash leads

Gemini 3.8 Flash: 58.0 (#5), Grok 4.1: 53.4 (#68)

BenchmarkGemini 3.8 FlashGrok 4.1
LMArena Non-English14911425
LMArena Chinese15541465
LMArena French14981448
LMArena German14931446
LMArena Japanese15021397
LMArena Korean14591407
LMArena Russian15151434
LMArena Spanish14851438

Instruction Following Gemini 3.8 Flash leads

Gemini 3.8 Flash: 78.0 (#13), Grok 4.1: 73.8 (#111)

BenchmarkGemini 3.8 FlashGrok 4.1
LMArena Instruction Following14901400

Long Context Gemini 3.8 Flash leads

Gemini 3.8 Flash: 46.3 (#24), Grok 4.1: 43.2 (#100)

BenchmarkGemini 3.8 FlashGrok 4.1
LMArena Longer Query15081416

Writing & Preference Gemini 3.8 Flash leads

Gemini 3.8 Flash: 72.2 (#15), Grok 4.1: 62.4 (#75)

BenchmarkGemini 3.8 FlashGrok 4.1
LMArena Text14991437
LMArena Creative Writing14921411
LMArena Multi-Turn15011437
EQ-Bench Creative Writing1748—

Frequently asked questions

Is Gemini 3.8 Flash better than Grok 4.1?

Gemini 3.8 Flash is the stronger model overall, scoring 61.8 to 41.5 on the Noometry Index.

Is Gemini 3.8 Flash or Grok 4.1 better for coding?

Gemini 3.8 Flash scores higher on coding benchmarks: 59.2 versus 33.7 in the Noometry coding category.

How many benchmarks do Gemini 3.8 Flash and Grok 4.1 share?

18 benchmarks have published results for both models. Gemini 3.8 Flash has 50 scored results on Noometry and Grok 4.1 has 19.

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