Noometry

Model comparison

GPT-5.4 nano vs Grok 4

Grok 4 is the stronger model overall, scoring 47.8 to 41.9 on the Noometry Index.

Last verified . 29 shared benchmarks.

GPT-5.4 nano OpenAI

41.9

Rank #111 Confirmed

Grok 4 xAI

47.8

Rank #49 Confirmed

Summary

  • They share 29 benchmarks with published results for both. GPT-5.4 nano scores higher in 1 category and Grok 4 in 8 categories; 9 gaps are clear of the uncertainty.
  • The widest gap is in long context, where Grok 4 leads 63.1 to 41.6.
  • The biggest single-benchmark swing is Kagi LLM Benchmark: 39.7% for GPT-5.4 nano and 73.6% for Grok 4.

Side by side

GPT-5.4 nanoGrok 4
ProviderOpenAIxAI
Noometry Index41.947.8
Released2026-03-172025-07-09
WeightsProprietaryProprietary
Context window400K—
Max output128K—
Input $ / M tokens$0.20—
Output $ / M tokens$1.25—
Results tracked4048

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Category by category

Coding Grok 4 leads

GPT-5.4 nano: 43.1 (#82), Grok 4: 49.9 (#44)

BenchmarkGPT-5.4 nanoGrok 4
WeirdML49.2%45.7%
LMArena Coding14041408
Aider Polyglot—79.6%
SciCode46.9%—
ALE-Bench1,005—

Agentic & Tool Use Not comparable

GPT-5.4 nano: —, Grok 4: 32.1 (#62)

BenchmarkGPT-5.4 nanoGrok 4
Terminal-Bench—27.2%
Berkeley Function Calling Leaderboard—63%
GDPval—21.1%
Cybench—43%
DeepResearch Bench—47.3%
BALROG—43.6%
LMArena Search—1142
METR Time Horizons—66.6%

Reasoning Grok 4 leads

GPT-5.4 nano: 23.8 (#159), Grok 4: 36.9 (#59)

BenchmarkGPT-5.4 nanoGrok 4
ARC-AGI-25.7%16%
Kagi LLM Benchmark39.7%73.6%
ARC-AGI-151.5%66.7%
Chess Puzzles30%28%
LMArena Hard Prompts13801409
Epoch Capabilities Index145.78146.46
ForecastBench57.360.9
SimpleBench—60.5%
CritPt9.3%—
Mystery Game Puzzles9%—
DTBench80.3%—
LMCA36.9%—

Math Grok 4 leads

GPT-5.4 nano: 40.7 (#76), Grok 4: 46.5 (#58)

BenchmarkGPT-5.4 nanoGrok 4
OTIS Mock AIME 2024-202587.8%84%
LMArena Math14061422
FrontierMath (Feb 2025 set)25.9%19.7%
FrontierMath Tier 4 (v1)6.3%2.1%
FrontierMath (Tiers 1-3)44.9%—
FrontierMath Tier 412.2%—
ProofBench5%—
Omni-MATH—60.3%

Knowledge Grok 4 leads

GPT-5.4 nano: 41.8 (#94), Grok 4: 53.7 (#50)

BenchmarkGPT-5.4 nanoGrok 4
GPQA Diamond78.5%87%
LMArena Expert13971417
SimpleQA Verified11.7%—
MMLU-Pro—85.1%
Confabulations—12.4%
Vectara Hallucination Rate3.1%—
GPQA (HELM)—72.7%

Multimodal GPT-5.4 nano leads

GPT-5.4 nano: 36.0 (#73), Grok 4: 33.1 (#89)

BenchmarkGPT-5.4 nanoGrok 4
LMArena Vision11961211
GeoBench—45%

Multilingual Grok 4 leads

GPT-5.4 nano: 48.8 (#136), Grok 4: 52.0 (#98)

BenchmarkGPT-5.4 nanoGrok 4
LMArena Non-English13591403
LMArena Chinese13911428
LMArena French13961418
LMArena German13681429
LMArena Japanese13421396
LMArena Korean13211376
LMArena Russian13631409
LMArena Spanish13681419

Instruction Following Grok 4 leads

GPT-5.4 nano: 72.1 (#139), Grok 4: 79.4 (#4)

BenchmarkGPT-5.4 nanoGrok 4
LMArena Instruction Following13621387
IFEval—94.9%

Long Context Grok 4 leads

GPT-5.4 nano: 41.6 (#131), Grok 4: 63.1 (#4)

BenchmarkGPT-5.4 nanoGrok 4
LMArena Longer Query13651409
Fiction.LiveBench—94.4%

Writing & Preference Grok 4 leads

GPT-5.4 nano: 55.9 (#137), Grok 4: 58.7 (#111)

BenchmarkGPT-5.4 nanoGrok 4
LMArena Text13721412
LMArena Creative Writing13131397
LMArena Multi-Turn13821416
Short-Story Creative Writing—76.9%
WildBench—79.7%

Frequently asked questions

Is GPT-5.4 nano better than Grok 4?

Grok 4 is the stronger model overall, scoring 47.8 to 41.9 on the Noometry Index.

Is GPT-5.4 nano or Grok 4 better for coding?

Grok 4 scores higher on coding benchmarks: 49.9 versus 43.1 in the Noometry coding category.

How many benchmarks do GPT-5.4 nano and Grok 4 share?

29 benchmarks have published results for both models. GPT-5.4 nano has 40 scored results on Noometry and Grok 4 has 48.

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