Noometry

Model comparison

Claude Sonnet 5 vs Grok 4.1

Claude Sonnet 5 is the stronger model overall, scoring 54.6 to 41.5 on the Noometry Index.

Last verified . 18 shared benchmarks.

Claude Sonnet 5 Anthropic

54.6

Rank #29 Confirmed

Grok 4.1 xAI

41.5

Rank #134 Confirmed

Summary

  • They share 18 benchmarks with published results for both. Claude Sonnet 5 scores higher in 9 categories and Grok 4.1 in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in math, where Claude Sonnet 5 leads 66.2 to 38.9.

Side by side

Claude Sonnet 5Grok 4.1
ProviderAnthropicxAI
Noometry Index54.641.5
Released2026-06-292025-11-17
WeightsProprietaryProprietary
Context window1M—
Max output128K—
Input $ / M tokens$2—
Output $ / M tokens$10—
Results tracked5119

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Category by category

Coding Claude Sonnet 5 leads

Claude Sonnet 5: 55.5 (#26), Grok 4.1: 33.7 (#253)

BenchmarkClaude Sonnet 5Grok 4.1
LMArena WebDev15411214
LMArena Coding14831445
DeepSWE53.8%—
FrontierCode42.7%—
CursorBench34.1%—
SciCode54.3%—
GSO37.3%—
WeirdML68.8%—
ALE-Bench1,463—

Agentic & Tool Use Claude Sonnet 5 leads

Claude Sonnet 5: 42.8 (#18), Grok 4.1: 34.1 (#49)

BenchmarkClaude Sonnet 5Grok 4.1
APEX-Agents54.5%—
Cybench—39%
GBAEval65.3%—
LMArena Search1194—
Vending-Bench 26,378—

Reasoning Claude Sonnet 5 leads

Claude Sonnet 5: 49.1 (#39), Grok 4.1: 29.5 (#91)

BenchmarkClaude Sonnet 5Grok 4.1
LMArena Hard Prompts14611435
SimpleBench60.6%—
NYT Connections (extended)75.1%—
CritPt16.9%—
Chess Puzzles35%—
Mystery Game Puzzles35%—
DTBench92.5%—
LMCA50%—
Surface Evolver Bench60%—
Bench to the Future 30.14—
Epoch Capabilities Index156.21—
ForecastBench61.1—

Math Claude Sonnet 5 leads

Claude Sonnet 5: 66.2 (#27), Grok 4.1: 38.9 (#120)

BenchmarkClaude Sonnet 5Grok 4.1
LMArena Math14671422
FrontierMath (Tiers 1-3)65.6%—
FrontierMath Tier 429.3%—
OTIS Mock AIME 2024-202594.7%—
ProofBench77%—

Knowledge Claude Sonnet 5 leads

Claude Sonnet 5: 55.6 (#47), Grok 4.1: 39.5 (#133)

BenchmarkClaude Sonnet 5Grok 4.1
LMArena Expert14901417
GPQA Diamond90.5%—
SimpleQA Verified33.7%—

Multimodal Not comparable

Claude Sonnet 5: 42.4 (#31), Grok 4.1: —

BenchmarkClaude Sonnet 5Grok 4.1
LMArena Vision1274—
Blueprint-Bench 224.9%—
LMArena Document1466—

Multilingual Too close to call

Claude Sonnet 5: 53.8 (#55), Grok 4.1: 53.4 (#68)

BenchmarkClaude Sonnet 5Grok 4.1
LMArena Non-English14311425
LMArena Chinese14771465
LMArena French14601448
LMArena German14401446
LMArena Japanese14221397
LMArena Korean14111407
LMArena Russian14511434
LMArena Spanish14371438

Instruction Following Claude Sonnet 5 leads

Claude Sonnet 5: 76.3 (#41), Grok 4.1: 73.8 (#111)

BenchmarkClaude Sonnet 5Grok 4.1
LMArena Instruction Following14521400

Long Context Claude Sonnet 5 leads

Claude Sonnet 5: 44.8 (#55), Grok 4.1: 43.2 (#100)

BenchmarkClaude Sonnet 5Grok 4.1
LMArena Longer Query14631416

Writing & Preference Claude Sonnet 5 leads

Claude Sonnet 5: 69.2 (#25), Grok 4.1: 62.4 (#75)

BenchmarkClaude Sonnet 5Grok 4.1
LMArena Text14421437
LMArena Creative Writing14161411
LMArena Multi-Turn14541437
EQ-Bench Creative Writing1794—
EQ-Bench 41236—

Frequently asked questions

Is Claude Sonnet 5 better than Grok 4.1?

Claude Sonnet 5 is the stronger model overall, scoring 54.6 to 41.5 on the Noometry Index.

Is Claude Sonnet 5 or Grok 4.1 better for coding?

Claude Sonnet 5 scores higher on coding benchmarks: 55.5 versus 33.7 in the Noometry coding category.

How many benchmarks do Claude Sonnet 5 and Grok 4.1 share?

18 benchmarks have published results for both models. Claude Sonnet 5 has 51 scored results on Noometry and Grok 4.1 has 19.

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