Noometry

Model comparison

Claude Opus 4.1 vs Grok 4.1

Claude Opus 4.1 and Grok 4.1 score almost the same on the Noometry Index (41.0 vs 41.5), so choose on price, context window or the category you care about most.

Last verified . 19 shared benchmarks.

Claude Opus 4.1 Anthropic

41.0

Rank #142 Confirmed

Grok 4.1 xAI

41.5

Rank #134 Confirmed

Summary

  • They share 19 benchmarks with published results for both. Claude Opus 4.1 scores higher in 7 categories and Grok 4.1 in 2 categories; 7 gaps are clear of the uncertainty.
  • The widest gap is in math, where Grok 4.1 leads 38.9 to 22.3.

Side by side

Claude Opus 4.1Grok 4.1
ProviderAnthropicxAI
Noometry Index41.041.5
Released2025-08-052025-11-17
WeightsProprietaryProprietary
Context window200K—
Max output32K—
Input $ / M tokens$15—
Output $ / M tokens$75—
Results tracked4819

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Category by category

Coding Claude Opus 4.1 leads

Claude Opus 4.1: 44.4 (#73), Grok 4.1: 33.7 (#253)

BenchmarkClaude Opus 4.1Grok 4.1
LMArena WebDev13901214
LMArena Coding14791445
SWE-bench Verified73.3%—
WeirdML45.9%—
ALE-Bench674.77—
AlgoTune1.34—

Agentic & Tool Use Too close to call

Claude Opus 4.1: 35.0 (#41), Grok 4.1: 34.1 (#49)

BenchmarkClaude Opus 4.1Grok 4.1
Cybench42%39%
Terminal-Bench38%—
GDPval43.6%—
DeepResearch Bench48.3%—
LMArena Search1148—
METR Time Horizons66.8%—

Reasoning Claude Opus 4.1 leads

Claude Opus 4.1: 32.2 (#76), Grok 4.1: 29.5 (#91)

BenchmarkClaude Opus 4.1Grok 4.1
LMArena Hard Prompts14431435
SimpleBench60%—
Chess Puzzles7%—
EnigmaEval7.2%—
EBR-Bench7.9%—
Mystery Game Puzzles21%—
DTBench80%—
LMCA37.1%—
Epoch Capabilities Index144.12—
ForecastBench62—

Math Grok 4.1 leads

Claude Opus 4.1: 22.3 (#277), Grok 4.1: 38.9 (#120)

BenchmarkClaude Opus 4.1Grok 4.1
LMArena Math14311422
FrontierMath (Tiers 1-3)12.6%—
FrontierMath Tier 42.4%—
OTIS Mock AIME 2024-202568.9%—
FrontierMath (Feb 2025 set)7.2%—
FrontierMath Tier 4 (v1)4.2%—

Knowledge Claude Opus 4.1 leads

Claude Opus 4.1: 42.0 (#101), Grok 4.1: 39.5 (#133)

BenchmarkClaude Opus 4.1Grok 4.1
LMArena Expert14391417
GPQA Diamond77.3%—
Humanity's Last Exam11.5%—
Confabulations17.1%—
Vectara Hallucination Rate11.8%—

Multimodal Not comparable

Claude Opus 4.1: 26.8 (#119), Grok 4.1: —

BenchmarkClaude Opus 4.1Grok 4.1
VPCT35%—

Multilingual Grok 4.1 leads

Claude Opus 4.1: 52.0 (#95), Grok 4.1: 53.4 (#68)

BenchmarkClaude Opus 4.1Grok 4.1
LMArena Non-English14051425
LMArena Chinese14271465
LMArena French14311448
LMArena German14131446
LMArena Japanese13781397
LMArena Korean13801407
LMArena Russian14221434
LMArena Spanish14481438

Instruction Following Claude Opus 4.1 leads

Claude Opus 4.1: 75.6 (#58), Grok 4.1: 73.8 (#111)

BenchmarkClaude Opus 4.1Grok 4.1
LMArena Instruction Following14351400

Long Context Claude Opus 4.1 leads

Claude Opus 4.1: 44.5 (#63), Grok 4.1: 43.2 (#100)

BenchmarkClaude Opus 4.1Grok 4.1
LMArena Longer Query14551416

Writing & Preference Too close to call

Claude Opus 4.1: 62.4 (#74), Grok 4.1: 62.4 (#75)

BenchmarkClaude Opus 4.1Grok 4.1
LMArena Text14191437
LMArena Creative Writing14121411
LMArena Multi-Turn14441437
Short-Story Creative Writing84.7%—

Frequently asked questions

Is Claude Opus 4.1 better than Grok 4.1?

Claude Opus 4.1 and Grok 4.1 score almost the same on the Noometry Index (41.0 vs 41.5), so choose on price, context window or the category you care about most.

Is Claude Opus 4.1 or Grok 4.1 better for coding?

Claude Opus 4.1 scores higher on coding benchmarks: 44.4 versus 33.7 in the Noometry coding category.

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

19 benchmarks have published results for both models. Claude Opus 4.1 has 48 scored results on Noometry and Grok 4.1 has 19.

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