Noometry

Model comparison

Claude 3 Opus vs Grok 4.1

Grok 4.1 is the stronger model overall, scoring 41.5 to 29.5 on the Noometry Index.

Last verified . 18 shared benchmarks.

Claude 3 Opus Anthropic

29.5

Rank #310 Confirmed

Grok 4.1 xAI

41.5

Rank #134 Confirmed

Summary

  • They share 18 benchmarks with published results for both. Claude 3 Opus scores higher in 0 categories and Grok 4.1 in 9 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in math, where Grok 4.1 leads 38.9 to 14.8.
  • The biggest single-benchmark swing is Cybench: 10% for Claude 3 Opus and 39% for Grok 4.1.

Side by side

Claude 3 OpusGrok 4.1
ProviderAnthropicxAI
Noometry Index29.541.5
Released2024-02-292025-11-17
WeightsProprietaryProprietary
Context window——
Max output——
Input $ / M tokens——
Output $ / M tokens——
Results tracked4619

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Category by category

Coding Too close to call

Claude 3 Opus: 32.9 (#267), Grok 4.1: 33.7 (#253)

BenchmarkClaude 3 OpusGrok 4.1
LMArena Coding12641445
LMArena WebDev—1214
WeirdML19.2%—
BigCodeBench Instruct45.5%—
LiveBench Coding38.6%—
BigCodeBench Complete57.4%—
HumanEval+77.4%—
MBPP+73.3%—

Agentic & Tool Use Grok 4.1 leads

Claude 3 Opus: 24.6 (#116), Grok 4.1: 34.1 (#49)

BenchmarkClaude 3 OpusGrok 4.1
Cybench10%39%
METR Time Horizons29.5%—

Reasoning Grok 4.1 leads

Claude 3 Opus: 14.6 (#324), Grok 4.1: 29.5 (#91)

BenchmarkClaude 3 OpusGrok 4.1
LMArena Hard Prompts12451435
SimpleBench23.5%—
Chess Puzzles5%—
EnigmaEval0.8%—
LiveBench Reasoning40.6%—
DTBench61.6%—
LiveBench Data Analysis57.9%—
LMCA17%—
Epoch Capabilities Index126.91—
ForecastBench58.4—
LiveBench49.2%—
WinoGrande88.5%—

Math Grok 4.1 leads

Claude 3 Opus: 14.8 (#299), Grok 4.1: 38.9 (#120)

BenchmarkClaude 3 OpusGrok 4.1
LMArena Math12731422
OTIS Mock AIME 2024-20254.7%—
LiveBench Math43.6%—
MATH Level 537.5%—

Knowledge Grok 4.1 leads

Claude 3 Opus: 24.5 (#267), Grok 4.1: 39.5 (#133)

BenchmarkClaude 3 OpusGrok 4.1
LMArena Expert12231417
GPQA Diamond47.2%—
SimpleQA Verified12.6%—
Confabulations22.7%—
MMLU84.6%—

Multimodal Not comparable

Claude 3 Opus: 27.1 (#116), Grok 4.1: —

BenchmarkClaude 3 OpusGrok 4.1
LMArena Vision1023—

Multilingual Grok 4.1 leads

Claude 3 Opus: 41.4 (#207), Grok 4.1: 53.4 (#68)

BenchmarkClaude 3 OpusGrok 4.1
LMArena Non-English12581425
LMArena Chinese12481465
LMArena French12751448
LMArena German12581446
LMArena Japanese12041397
LMArena Korean11871407
LMArena Russian12801434
LMArena Spanish12461438

Instruction Following Grok 4.1 leads

Claude 3 Opus: 64.1 (#228), Grok 4.1: 73.8 (#111)

BenchmarkClaude 3 OpusGrok 4.1
LMArena Instruction Following12481400
LiveBench Instruction Following63.9%—

Long Context Grok 4.1 leads

Claude 3 Opus: 38.2 (#202), Grok 4.1: 43.2 (#100)

BenchmarkClaude 3 OpusGrok 4.1
LMArena Longer Query12591416

Writing & Preference Grok 4.1 leads

Claude 3 Opus: 47.2 (#213), Grok 4.1: 62.4 (#75)

BenchmarkClaude 3 OpusGrok 4.1
LMArena Text12621437
LMArena Creative Writing12351411
LMArena Multi-Turn12751437
LiveBench Language50.4%—

Frequently asked questions

Is Claude 3 Opus better than Grok 4.1?

Grok 4.1 is the stronger model overall, scoring 41.5 to 29.5 on the Noometry Index.

Is Claude 3 Opus or Grok 4.1 better for coding?

They score almost the same on coding (32.9 vs 33.7); test both on your own repository before choosing.

How many benchmarks do Claude 3 Opus and Grok 4.1 share?

18 benchmarks have published results for both models. Claude 3 Opus has 46 scored results on Noometry and Grok 4.1 has 19.

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