Noometry

Model comparison

GPT-5.4 mini vs Grok 4

Grok 4 is the stronger model overall, scoring 47.8 to 44.8 on the Noometry Index.

Last verified . 30 shared benchmarks.

GPT-5.4 mini OpenAI

44.8

Rank #69 Confirmed

Grok 4 xAI

47.8

Rank #49 Confirmed

Summary

  • They share 30 benchmarks with published results for both. GPT-5.4 mini scores higher in 3 categories and Grok 4 in 7 categories; 9 gaps are clear of the uncertainty.
  • The widest gap is in long context, where Grok 4 leads 63.1 to 42.9.
  • The biggest single-benchmark swing is Kagi LLM Benchmark: 37.9% for GPT-5.4 mini and 73.6% for Grok 4.

Side by side

GPT-5.4 miniGrok 4
ProviderOpenAIxAI
Noometry Index44.847.8
Released2026-03-172025-07-09
WeightsProprietaryProprietary
Context window400K—
Max output128K—
Input $ / M tokens$0.75—
Output $ / M tokens$4.50—
Results tracked4648

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Category by category

Coding Grok 4 leads

GPT-5.4 mini: 45.0 (#67), Grok 4: 49.9 (#44)

BenchmarkGPT-5.4 miniGrok 4
WeirdML60.3%45.7%
LMArena Coding14381408
FrontierCode27%—
Aider Polyglot—79.6%
LMArena WebDev1397—
SciCode49.9%—
ALE-Bench1,189—

Agentic & Tool Use Grok 4 leads

GPT-5.4 mini: 29.6 (#74), Grok 4: 32.1 (#62)

BenchmarkGPT-5.4 miniGrok 4
DeepResearch Bench36.3%47.3%
Terminal-Bench—27.2%
Berkeley Function Calling Leaderboard—63%
GDPval—21.1%
Cybench—43%
BALROG—43.6%
LMArena Search—1142
METR Time Horizons—66.6%

Reasoning Grok 4 leads

GPT-5.4 mini: 30.3 (#77), Grok 4: 36.9 (#59)

BenchmarkGPT-5.4 miniGrok 4
ARC-AGI-218.9%16%
Kagi LLM Benchmark37.9%73.6%
ARC-AGI-163.7%66.7%
Chess Puzzles24%28%
LMArena Hard Prompts14241409
Epoch Capabilities Index148.83146.46
ForecastBench5760.9
SimpleBench—60.5%
NYT Connections (extended)61.8%—
CritPt10%—
Thematic Generalization61.7%—
Mystery Game Puzzles11%—
DTBench80%—
LMCA40.8%—

Math Grok 4 leads

GPT-5.4 mini: 45.4 (#63), Grok 4: 46.5 (#58)

BenchmarkGPT-5.4 miniGrok 4
OTIS Mock AIME 2024-202588.9%84%
LMArena Math14181422
FrontierMath (Feb 2025 set)28.3%19.7%
FrontierMath Tier 4 (v1)2.1%2.1%
FrontierMath (Tiers 1-3)51.2%—
FrontierMath Tier 49.8%—
ProofBench21%—
Omni-MATH—60.3%

Knowledge Grok 4 leads

GPT-5.4 mini: 51.4 (#62), Grok 4: 53.7 (#50)

BenchmarkGPT-5.4 miniGrok 4
GPQA Diamond86.9%87%
LMArena Expert14341417
SimpleQA Verified29.4%—
MMLU-Pro—85.1%
Confabulations—12.4%
Vectara Hallucination Rate5.5%—
GPQA (HELM)—72.7%

Multimodal GPT-5.4 mini leads

GPT-5.4 mini: 39.0 (#51), Grok 4: 33.1 (#89)

BenchmarkGPT-5.4 miniGrok 4
LMArena Vision12451211
GeoBench—45%

Multilingual Too close to call

GPT-5.4 mini: 52.1 (#94), Grok 4: 52.0 (#98)

BenchmarkGPT-5.4 miniGrok 4
LMArena Non-English14051403
LMArena Chinese14461428
LMArena French14401418
LMArena German14071429
LMArena Japanese13751396
LMArena Korean13691376
LMArena Russian14171409
LMArena Spanish14031419

Instruction Following Grok 4 leads

GPT-5.4 mini: 74.3 (#99), Grok 4: 79.4 (#4)

BenchmarkGPT-5.4 miniGrok 4
LMArena Instruction Following14051387
IFEval—94.9%

Long Context Grok 4 leads

GPT-5.4 mini: 42.9 (#107), Grok 4: 63.1 (#4)

BenchmarkGPT-5.4 miniGrok 4
LMArena Longer Query14071409
Fiction.LiveBench—94.4%

Writing & Preference GPT-5.4 mini leads

GPT-5.4 mini: 64.2 (#56), Grok 4: 58.7 (#111)

BenchmarkGPT-5.4 miniGrok 4
LMArena Text14111412
LMArena Creative Writing13701397
LMArena Multi-Turn14291416
Short-Story Creative Writing—76.9%
EQ-Bench Creative Writing1665—
WildBench—79.7%

Frequently asked questions

Is GPT-5.4 mini better than Grok 4?

Grok 4 is the stronger model overall, scoring 47.8 to 44.8 on the Noometry Index.

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

Grok 4 scores higher on coding benchmarks: 49.9 versus 45.0 in the Noometry coding category.

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

30 benchmarks have published results for both models. GPT-5.4 mini has 46 scored results on Noometry and Grok 4 has 48.

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