Noometry

Model comparison

Grok 4 vs Grok 4.3

Grok 4 is the stronger model overall, scoring 48.1 to 43.8 on the Noometry Index.

Last verified . 25 shared benchmarks.

Grok 4 xAI

48.1

Rank #56 Confirmed

Grok 4.3 xAI

43.8

Rank #86 Confirmed

Summary

  • They share 25 benchmarks with published results for both. Grok 4 scores higher in 10 categories and Grok 4.3 in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in long context, where Grok 4 leads 63.1 to 42.5.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 84% for Grok 4 and 93.3% for Grok 4.3.

Side by side

Grok 4Grok 4.3
ProviderxAIxAI
Noometry Index48.143.8
Released2025-07-092026-04-17
WeightsProprietaryProprietary
Context window—1M
Max output—30K
Input $ / M tokens—$1.25
Output $ / M tokens—$2.50
Results tracked4840

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Category by category

Coding Grok 4 leads

Grok 4: 50.3 (#46), Grok 4.3: 41.6 (#121)

BenchmarkGrok 4Grok 4.3
WeirdML45.7%49.9%
LMArena Coding14081415
Aider Polyglot79.6%—
LMArena WebDev—1357
SciCode—47.3%
ALE-Bench—944.17

Agentic & Tool Use Grok 4 leads

Grok 4: 32.3 (#68), Grok 4.3: 27.7 (#99)

BenchmarkGrok 4Grok 4.3
LMArena Search11421165
Terminal-Bench27.2%—
Berkeley Function Calling Leaderboard63%—
GDPval21.1%—
Cybench43%—
DeepResearch Bench47.3%—
BALROG43.6%—
GDP.pdf—8%
METR Time Horizons66.6%—
Vending-Bench 2—35.26

Reasoning Too close to call

Grok 4: 36.7 (#65), Grok 4.3: 35.9 (#68)

BenchmarkGrok 4Grok 4.3
Chess Puzzles28%25%
LMArena Hard Prompts14091396
Epoch Capabilities Index146.44149.16
ForecastBench60.960.3
ARC-AGI-216%—
SimpleBench60.5%—
Kagi LLM Benchmark73.6%—
NYT Connections (extended)—55.2%
ARC-AGI-166.7%—
CritPt—8%
DTBench—90.7%
LMCA—38.3%

Math Grok 4 leads

Grok 4: 48.4 (#64), Grok 4.3: 46.0 (#74)

BenchmarkGrok 4Grok 4.3
OTIS Mock AIME 2024-202584%93.3%
LMArena Math14221388
FrontierMath (Tiers 1-3)—42.8%
FrontierMath Tier 4—14.6%
ProofBench—11%
Omni-MATH60.3%—
FrontierMath (Feb 2025 set)19.7%—
FrontierMath Tier 4 (v1)2.1%—

Knowledge Grok 4 leads

Grok 4: 53.8 (#55), Grok 4.3: 52.5 (#62)

BenchmarkGrok 4Grok 4.3
GPQA Diamond87%88.8%
LMArena Expert14151385
SimpleQA Verified—33.2%
MMLU-Pro85.1%—
Confabulations12.4%—
GPQA (HELM)72.7%—

Multimodal Grok 4 leads

Grok 4: 33.7 (#94), Grok 4.3: 31.6 (#104)

BenchmarkGrok 4Grok 4.3
LMArena Vision12101229
GeoBench45%—
Blueprint-Bench 2—0%

Multilingual Grok 4 leads

Grok 4: 51.8 (#103), Grok 4.3: 50.5 (#120)

BenchmarkGrok 4Grok 4.3
LMArena Non-English14031385
LMArena Chinese14271422
LMArena French14181412
LMArena German14291395
LMArena Japanese13941379
LMArena Korean13771356
LMArena Russian14101399
LMArena Spanish14201398

Instruction Following Grok 4 leads

Grok 4: 79.2 (#5), Grok 4.3: 72.1 (#140)

BenchmarkGrok 4Grok 4.3
LMArena Instruction Following13871366
IFEval94.9%—

Long Context Grok 4 leads

Grok 4: 63.1 (#4), Grok 4.3: 42.5 (#123)

BenchmarkGrok 4Grok 4.3
LMArena Longer Query14091393
Fiction.LiveBench94.4%—

Writing & Preference Too close to call

Grok 4: 58.5 (#116), Grok 4.3: 58.5 (#118)

BenchmarkGrok 4Grok 4.3
LMArena Text14111397
LMArena Creative Writing13971380
LMArena Multi-Turn14161406
Short-Story Creative Writing76.9%—
WildBench79.7%—
EQ-Bench 4—1075

Frequently asked questions

Is Grok 4 better than Grok 4.3?

Grok 4 is the stronger model overall, scoring 48.1 to 43.8 on the Noometry Index.

Is Grok 4 or Grok 4.3 better for coding?

Grok 4 scores higher on coding benchmarks: 50.3 versus 41.6 in the Noometry coding category.

How many benchmarks do Grok 4 and Grok 4.3 share?

25 benchmarks have published results for both models. Grok 4 has 48 scored results on Noometry and Grok 4.3 has 40.

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