Noometry

Model comparison

Grok-3 mini vs Grok 4.3

Grok 4.3 is the stronger model overall, scoring 43.6 to 41.0 on the Noometry Index.

Last verified . 21 shared benchmarks.

Grok-3 mini xAI

41.0

Rank #130 Confirmed

Grok 4.3 xAI

43.6

Rank #80 Confirmed

Summary

  • They share 21 benchmarks with published results for both. Grok-3 mini scores higher in 1 category and Grok 4.3 in 7 categories; 7 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Grok 4.3 leads 34.9 to 13.8.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 77.8% for Grok-3 mini and 93.3% for Grok 4.3.

Side by side

Grok-3 miniGrok 4.3
ProviderxAIxAI
Noometry Index41.043.6
Released2025-04-092026-04-17
WeightsProprietaryProprietary
Context window—1M
Max output—30K
Input $ / M tokens—$1.25
Output $ / M tokens—$2.50
Results tracked3540

Sponsored placements are available on pages like this one. Advertise on Noometry

Category by category

Coding Too close to call

Grok-3 mini: 40.4 (#126), Grok 4.3: 41.3 (#117)

BenchmarkGrok-3 miniGrok 4.3
WeirdML42.6%49.9%
LMArena Coding13801415
Aider Polyglot49.3%—
LMArena WebDev—1357
SciCode—47.3%
ALE-Bench—944.17

Agentic & Tool Use Not comparable

Grok-3 mini: —, Grok 4.3: 27.6 (#93)

BenchmarkGrok-3 miniGrok 4.3
GDP.pdf—8%
LMArena Search—1165
Vending-Bench 2—35.26

Reasoning Grok 4.3 leads

Grok-3 mini: 13.8 (#323), Grok 4.3: 34.9 (#60)

BenchmarkGrok-3 miniGrok 4.3
LMArena Hard Prompts13741397
Epoch Capabilities Index140.35149.13
ARC-AGI-20.4%—
Kagi LLM Benchmark61.3%—
NYT Connections (extended)—55.2%
ARC-AGI-116.5%—
CritPt—8%
Chess Puzzles—25%
DTBench—90.7%
LMCA—38.3%
ForecastBench—60.3

Math Grok 4.3 leads

Grok-3 mini: 40.3 (#78), Grok 4.3: 45.8 (#60)

BenchmarkGrok-3 miniGrok 4.3
OTIS Mock AIME 2024-202577.8%93.3%
LMArena Math13861388
FrontierMath (Tiers 1-3)—42.8%
FrontierMath Tier 4—14.6%
ProofBench—11%
Omni-MATH31.8%—
MATH Level 590.9%—
FrontierMath (Feb 2025 set)5.9%—

Knowledge Grok 4.3 leads

Grok-3 mini: 46.3 (#75), Grok 4.3: 52.5 (#57)

BenchmarkGrok-3 miniGrok 4.3
GPQA Diamond76.3%88.8%
LMArena Expert13951385
SimpleQA Verified—33.2%
MMLU-Pro79.9%—
Confabulations10.8%—
GPQA (HELM)67.5%—

Multimodal Not comparable

Grok-3 mini: —, Grok 4.3: 31.6 (#96)

BenchmarkGrok-3 miniGrok 4.3
LMArena Vision—1231
Blueprint-Bench 2—0%

Multilingual Grok 4.3 leads

Grok-3 mini: 48.3 (#141), Grok 4.3: 50.7 (#114)

BenchmarkGrok-3 miniGrok 4.3
LMArena Non-English13521385
LMArena Chinese13871423
LMArena French13571412
LMArena German13501395
LMArena Japanese13431379
LMArena Korean13361357
LMArena Russian13521399
LMArena Spanish13791402

Instruction Following Grok-3 mini leads

Grok-3 mini: 78.7 (#8), Grok 4.3: 72.3 (#135)

BenchmarkGrok-3 miniGrok 4.3
LMArena Instruction Following13561366
IFEval95.1%—

Long Context Grok 4.3 leads

Grok-3 mini: 41.0 (#142), Grok 4.3: 42.5 (#118)

BenchmarkGrok-3 miniGrok 4.3
LMArena Longer Query13721393
Fiction.LiveBench66.7%—

Writing & Preference Grok 4.3 leads

Grok-3 mini: 52.7 (#163), Grok 4.3: 58.6 (#112)

BenchmarkGrok-3 miniGrok 4.3
LMArena Text13701397
LMArena Creative Writing13421380
LMArena Multi-Turn13551406
Short-Story Creative Writing73.5%—
WildBench65.1%—
EQ-Bench 4—1075

Frequently asked questions

Is Grok-3 mini better than Grok 4.3?

Grok 4.3 is the stronger model overall, scoring 43.6 to 41.0 on the Noometry Index.

Is Grok-3 mini or Grok 4.3 better for coding?

They score almost the same on coding (40.4 vs 41.3); test both on your own repository before choosing.

How many benchmarks do Grok-3 mini and Grok 4.3 share?

21 benchmarks have published results for both models. Grok-3 mini has 35 scored results on Noometry and Grok 4.3 has 40.

Related comparisons

Go deeper