Noometry

Model comparison

GPT-5 vs Grok 4

GPT-5 is the stronger model overall, scoring 50.9 to 48.1 on the Noometry Index.

Last verified . 46 shared benchmarks.

GPT-5 OpenAI

50.9

Rank #45 Confirmed

Grok 4 xAI

48.1

Rank #56 Confirmed

Summary

  • They share 46 benchmarks with published results for both. GPT-5 scores higher in 7 categories and Grok 4 in 3 categories; 7 gaps are clear of the uncertainty.
  • The widest gap is in multimodal, where GPT-5 leads 46.8 to 33.7.
  • The biggest single-benchmark swing is GeoBench: 81% for GPT-5 and 45% for Grok 4.

Side by side

GPT-5Grok 4
ProviderOpenAIxAI
Noometry Index50.948.1
Released2025-08-072025-07-09
WeightsProprietaryProprietary
Context window400K—
Max output128K—
Input $ / M tokens$1.25—
Output $ / M tokens$10—
Results tracked6948

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Category by category

Coding Too close to call

GPT-5: 50.3 (#47), Grok 4: 50.3 (#46)

BenchmarkGPT-5Grok 4
Aider Polyglot88%79.6%
WeirdML60.7%45.7%
LMArena Coding14361408
SWE-bench Verified73.6%—
SWE-bench Verified (bash only)65%—
LMArena WebDev1418—
SciCode42.9%—
GSO6.9%—
ALE-Bench1,162—
AlgoTune1.67—

Agentic & Tool Use Too close to call

GPT-5: 33.1 (#56), Grok 4: 32.3 (#68)

BenchmarkGPT-5Grok 4
Terminal-Bench49.6%27.2%
GDPval34.8%21.1%
DeepResearch Bench49.6%47.3%
BALROG32.8%43.6%
LMArena Search11331142
METR Time Horizons69.6%66.6%
Berkeley Function Calling Leaderboard—63%
Remote Labor Index1.7%—
Cybench—43%

Reasoning GPT-5 leads

GPT-5: 38.3 (#64), Grok 4: 36.7 (#65)

BenchmarkGPT-5Grok 4
ARC-AGI-29.9%16%
SimpleBench56.7%60.5%
Kagi LLM Benchmark72.7%73.6%
ARC-AGI-165.7%66.7%
Chess Puzzles37%28%
LMArena Hard Prompts14161409
Epoch Capabilities Index150146.44
ForecastBench61.460.9
CritPt12.6%—
EnigmaEval10.5%—
EBR-Bench12.7%—
Mystery Game Puzzles23%—
DTBench90.7%—
LMCA40%—

Math GPT-5 leads

GPT-5: 55.0 (#44), Grok 4: 48.4 (#64)

BenchmarkGPT-5Grok 4
OTIS Mock AIME 2024-202591.4%84%
Omni-MATH64.7%60.3%
LMArena Math14071422
FrontierMath (Feb 2025 set)32.4%19.7%
FrontierMath Tier 4 (v1)12.5%2.1%
FrontierMath (Tiers 1-3)55.4%—
FrontierMath Tier 422%—
ProofBench18%—
MATH Level 598.1%—

Knowledge GPT-5 leads

GPT-5: 56.6 (#43), Grok 4: 53.8 (#55)

BenchmarkGPT-5Grok 4
GPQA Diamond86.2%87%
MMLU-Pro86.3%85.1%
Confabulations10.3%12.4%
GPQA (HELM)79.2%72.7%
LMArena Expert14191415
Humanity's Last Exam25.3%—
SimpleQA Verified50.1%—
Vectara Hallucination Rate14.7%—

Multimodal GPT-5 leads

GPT-5: 46.8 (#13), Grok 4: 33.7 (#94)

BenchmarkGPT-5Grok 4
LMArena Vision12321210
GeoBench81%45%
VPCT66%—

Multilingual Too close to call

GPT-5: 51.4 (#110), Grok 4: 51.8 (#103)

BenchmarkGPT-5Grok 4
LMArena Non-English13971403
LMArena Chinese14221427
LMArena French14101418
LMArena German14161429
LMArena Japanese14091394
LMArena Korean13601377
LMArena Russian14061410
LMArena Spanish13991420

Instruction Following Grok 4 leads

GPT-5: 73.8 (#113), Grok 4: 79.2 (#5)

BenchmarkGPT-5Grok 4
IFEval87.5%94.9%
LMArena Instruction Following13881387

Long Context GPT-5 leads

GPT-5: 69.5 (#2), Grok 4: 63.1 (#4)

BenchmarkGPT-5Grok 4
Fiction.LiveBench97.2%94.4%
LMArena Longer Query13991409

Writing & Preference GPT-5 leads

GPT-5: 63.4 (#65), Grok 4: 58.5 (#116)

BenchmarkGPT-5Grok 4
LMArena Text14061411
LMArena Creative Writing13651397
Short-Story Creative Writing86%76.9%
WildBench85.7%79.7%
LMArena Multi-Turn14261416
EQ-Bench Creative Writing1627—

Frequently asked questions

Is GPT-5 better than Grok 4?

GPT-5 is the stronger model overall, scoring 50.9 to 48.1 on the Noometry Index.

Is GPT-5 or Grok 4 better for coding?

They score almost the same on coding (50.3 vs 50.3); test both on your own repository before choosing.

How many benchmarks do GPT-5 and Grok 4 share?

46 benchmarks have published results for both models. GPT-5 has 69 scored results on Noometry and Grok 4 has 48.

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