Noometry

Model comparison

Claude 3 Opus vs Grok 4

Grok 4 is the stronger model overall, scoring 47.8 to 29.3 on the Noometry Index.

Last verified . 28 shared benchmarks.

Claude 3 Opus Anthropic

29.3

Rank #300 Confirmed

Grok 4 xAI

47.8

Rank #49 Confirmed

Summary

  • They share 28 benchmarks with published results for both. Claude 3 Opus scores higher in 0 categories and Grok 4 in 10 categories; 10 gaps are clear of the uncertainty.
  • The widest gap is in math, where Grok 4 leads 46.5 to 13.9.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 4.7% for Claude 3 Opus and 84% for Grok 4.

Side by side

Claude 3 OpusGrok 4
ProviderAnthropicxAI
Noometry Index29.347.8
Released2024-02-292025-07-09
WeightsProprietaryProprietary
Context window——
Max output——
Input $ / M tokens——
Output $ / M tokens——
Results tracked4648

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Category by category

Coding Grok 4 leads

Claude 3 Opus: 32.4 (#261), Grok 4: 49.9 (#44)

BenchmarkClaude 3 OpusGrok 4
WeirdML19.2%45.7%
LMArena Coding12641408
Aider Polyglot—79.6%
BigCodeBench Instruct45.5%—
LiveBench Coding38.6%—
BigCodeBench Complete57.4%—
HumanEval+77.4%—
MBPP+73.3%—

Agentic & Tool Use Grok 4 leads

Claude 3 Opus: 24.3 (#110), Grok 4: 32.1 (#62)

BenchmarkClaude 3 OpusGrok 4
Cybench10%43%
METR Time Horizons29.5%66.6%
Terminal-Bench—27.2%
Berkeley Function Calling Leaderboard—63%
GDPval—21.1%
DeepResearch Bench—47.3%
BALROG—43.6%
LMArena Search—1142

Reasoning Grok 4 leads

Claude 3 Opus: 14.2 (#318), Grok 4: 36.9 (#59)

BenchmarkClaude 3 OpusGrok 4
SimpleBench23.5%60.5%
Chess Puzzles5%28%
LMArena Hard Prompts12461409
Epoch Capabilities Index126.91146.46
ForecastBench58.460.9
ARC-AGI-2—16%
Kagi LLM Benchmark—73.6%
ARC-AGI-1—66.7%
EnigmaEval0.8%—
LiveBench Reasoning40.6%—
DTBench61.6%—
LiveBench Data Analysis57.9%—
LMCA17%—
LiveBench49.2%—
WinoGrande88.5%—

Math Grok 4 leads

Claude 3 Opus: 13.9 (#293), Grok 4: 46.5 (#58)

BenchmarkClaude 3 OpusGrok 4
OTIS Mock AIME 2024-20254.7%84%
LMArena Math12731422
Omni-MATH—60.3%
LiveBench Math43.6%—
MATH Level 537.5%—
FrontierMath (Feb 2025 set)—19.7%
FrontierMath Tier 4 (v1)—2.1%

Knowledge Grok 4 leads

Claude 3 Opus: 24.5 (#262), Grok 4: 53.7 (#50)

BenchmarkClaude 3 OpusGrok 4
GPQA Diamond47.2%87%
Confabulations22.7%12.4%
LMArena Expert12231417
SimpleQA Verified12.6%—
MMLU-Pro—85.1%
GPQA (HELM)—72.7%
MMLU84.6%—

Multimodal Grok 4 leads

Claude 3 Opus: 26.6 (#112), Grok 4: 33.1 (#89)

BenchmarkClaude 3 OpusGrok 4
LMArena Vision10231211
GeoBench—45%

Multilingual Grok 4 leads

Claude 3 Opus: 41.6 (#202), Grok 4: 52.0 (#98)

BenchmarkClaude 3 OpusGrok 4
LMArena Non-English12581403
LMArena Chinese12481428
LMArena French12741418
LMArena German12581429
LMArena Japanese12041396
LMArena Korean11871376
LMArena Russian12801409
LMArena Spanish12461419

Instruction Following Grok 4 leads

Claude 3 Opus: 64.3 (#223), Grok 4: 79.4 (#4)

BenchmarkClaude 3 OpusGrok 4
LMArena Instruction Following12481387
LiveBench Instruction Following63.9%—
IFEval—94.9%

Long Context Grok 4 leads

Claude 3 Opus: 38.2 (#197), Grok 4: 63.1 (#4)

BenchmarkClaude 3 OpusGrok 4
LMArena Longer Query12591409
Fiction.LiveBench—94.4%

Writing & Preference Grok 4 leads

Claude 3 Opus: 47.4 (#208), Grok 4: 58.7 (#111)

BenchmarkClaude 3 OpusGrok 4
LMArena Text12621412
LMArena Creative Writing12351397
LMArena Multi-Turn12751416
Short-Story Creative Writing—76.9%
WildBench—79.7%
LiveBench Language50.4%—

Frequently asked questions

Is Claude 3 Opus better than Grok 4?

Grok 4 is the stronger model overall, scoring 47.8 to 29.3 on the Noometry Index.

Is Claude 3 Opus or Grok 4 better for coding?

Grok 4 scores higher on coding benchmarks: 49.9 versus 32.4 in the Noometry coding category.

How many benchmarks do Claude 3 Opus and Grok 4 share?

28 benchmarks have published results for both models. Claude 3 Opus has 46 scored results on Noometry and Grok 4 has 48.

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