Noometry

Model comparison

Claude Sonnet 4 vs Grok 4

Grok 4 is the stronger model overall, scoring 48.1 to 40.8 on the Noometry Index.

Last verified . 42 shared benchmarks.

Claude Sonnet 4 Anthropic

40.8

Rank #145 Confirmed

Grok 4 xAI

48.1

Rank #56 Confirmed

Summary

  • They share 42 benchmarks with published results for both. Claude Sonnet 4 scores higher in 1 category and Grok 4 in 9 categories; 10 gaps are clear of the uncertainty.
  • The widest gap is in long context, where Grok 4 leads 63.1 to 33.7.
  • The biggest single-benchmark swing is Fiction.LiveBench: 46.9% for Claude Sonnet 4 and 94.4% for Grok 4.

Side by side

Claude Sonnet 4Grok 4
ProviderAnthropicxAI
Noometry Index40.848.1
Released2025-05-222025-07-09
WeightsProprietaryProprietary
Context window200K—
Max output64K—
Input $ / M tokens$3—
Output $ / M tokens$15—
Results tracked5848

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Category by category

Coding Grok 4 leads

Claude Sonnet 4: 43.5 (#88), Grok 4: 50.3 (#46)

BenchmarkClaude Sonnet 4Grok 4
Aider Polyglot61.3%79.6%
WeirdML46.1%45.7%
LMArena Coding14141408
SWE-bench Verified (bash only)64.9%—
SciCode40%—
GSO4.9%—
ALE-Bench655.35—

Agentic & Tool Use Claude Sonnet 4 leads

Claude Sonnet 4: 38.5 (#31), Grok 4: 32.3 (#68)

BenchmarkClaude Sonnet 4Grok 4
Cybench35%43%
DeepResearch Bench46.6%47.3%
METR Time Horizons62%66.6%
Terminal-Bench—27.2%
Berkeley Function Calling Leaderboard—63%
GDPval—21.1%
TheAgentCompany33.1%—
OSWorld43.9%—
BALROG—43.6%
LMArena Search—1142

Reasoning Grok 4 leads

Claude Sonnet 4: 22.9 (#187), Grok 4: 36.7 (#65)

BenchmarkClaude Sonnet 4Grok 4
ARC-AGI-25.9%16%
SimpleBench45.5%60.5%
Kagi LLM Benchmark73%73.6%
ARC-AGI-140%66.7%
LMArena Hard Prompts13721409
Epoch Capabilities Index141.69146.44
ForecastBench60.260.9
CritPt0.3%—
Chess Puzzles—28%
EnigmaEval3.1%—
DTBench77.1%—
LMCA29%—

Math Grok 4 leads

Claude Sonnet 4: 43.3 (#80), Grok 4: 48.4 (#64)

BenchmarkClaude Sonnet 4Grok 4
OTIS Mock AIME 2024-202571.1%84%
Omni-MATH60.2%60.3%
LMArena Math13751422
FrontierMath (Feb 2025 set)4.1%19.7%
FrontierMath Tier 4 (v1)0%2.1%
MATH Level 584.4%—

Knowledge Grok 4 leads

Claude Sonnet 4: 41.8 (#108), Grok 4: 53.8 (#55)

BenchmarkClaude Sonnet 4Grok 4
GPQA Diamond79.2%87%
MMLU-Pro84.3%85.1%
Confabulations13.2%12.4%
GPQA (HELM)70.6%72.7%
LMArena Expert13721415
Humanity's Last Exam7.8%—
Vectara Hallucination Rate10.3%—

Multimodal Grok 4 leads

Claude Sonnet 4: 26.2 (#121), Grok 4: 33.7 (#94)

BenchmarkClaude Sonnet 4Grok 4
LMArena Vision11911210
GeoBench37%45%
VPCT34%—
MindCube44.8%—

Multilingual Grok 4 leads

Claude Sonnet 4: 46.7 (#156), Grok 4: 51.8 (#103)

BenchmarkClaude Sonnet 4Grok 4
LMArena Non-English13331403
LMArena Chinese13501427
LMArena French13631418
LMArena German13311429
LMArena Japanese13021394
LMArena Korean12911377
LMArena Russian13551410
LMArena Spanish13571420

Instruction Following Grok 4 leads

Claude Sonnet 4: 71.7 (#145), Grok 4: 79.2 (#5)

BenchmarkClaude Sonnet 4Grok 4
IFEval84%94.9%
LMArena Instruction Following13761387

Long Context Grok 4 leads

Claude Sonnet 4: 33.7 (#259), Grok 4: 63.1 (#4)

BenchmarkClaude Sonnet 4Grok 4
Fiction.LiveBench46.9%94.4%
LMArena Longer Query13981409

Writing & Preference Grok 4 leads

Claude Sonnet 4: 57.1 (#132), Grok 4: 58.5 (#116)

BenchmarkClaude Sonnet 4Grok 4
LMArena Text13511411
LMArena Creative Writing13451397
Short-Story Creative Writing81.4%76.9%
WildBench83.8%79.7%
LMArena Multi-Turn13761416
EQ-Bench Creative Writing1483—

Frequently asked questions

Is Claude Sonnet 4 better than Grok 4?

Grok 4 is the stronger model overall, scoring 48.1 to 40.8 on the Noometry Index.

Is Claude Sonnet 4 or Grok 4 better for coding?

Grok 4 scores higher on coding benchmarks: 50.3 versus 43.5 in the Noometry coding category.

How many benchmarks do Claude Sonnet 4 and Grok 4 share?

42 benchmarks have published results for both models. Claude Sonnet 4 has 58 scored results on Noometry and Grok 4 has 48.

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