Noometry

Model comparison

GPT-5 Mini vs Grok 3

GPT-5 Mini is the stronger model overall, scoring 41.7 to 39.6 on the Noometry Index.

Last verified . 37 shared benchmarks.

GPT-5 Mini OpenAI

41.7

Rank #115 Confirmed

Grok 3 xAI

39.6

Rank #150 Confirmed

Summary

  • They share 37 benchmarks with published results for both. GPT-5 Mini scores higher in 5 categories and Grok 3 in 4 categories; 6 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where GPT-5 Mini leads 24.1 to 13.8.
  • The biggest single-benchmark swing is ARC-AGI-1: 54.3% for GPT-5 Mini and 5.5% for Grok 3.

Side by side

GPT-5 MiniGrok 3
ProviderOpenAIxAI
Noometry Index41.739.6
Released2025-08-072025-04-09
WeightsProprietaryProprietary
Context window400K—
Max output128K—
Input $ / M tokens$0.25—
Output $ / M tokens$2—
Results tracked6040

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Category by category

Coding Grok 3 leads

GPT-5 Mini: 40.0 (#134), Grok 3: 41.5 (#113)

BenchmarkGPT-5 MiniGrok 3
WeirdML52.7%37.2%
LMArena Coding14061432
SWE-bench Verified64.7%—
SWE-bench Verified (bash only)59.8%—
Aider Polyglot—53.3%
SWE-bench Multilingual39.7%—
SciCode39.2%—
ALE-Bench799.77—
AlgoTune1.38—

Agentic & Tool Use Too close to call

GPT-5 Mini: 31.0 (#64), Grok 3: 30.2 (#69)

BenchmarkGPT-5 MiniGrok 3
Terminal-Bench34.8%—
Berkeley Function Calling Leaderboard55.5%—
BALROG—29.5%
Vending-Bench 2-31.18—

Reasoning GPT-5 Mini leads

GPT-5 Mini: 24.1 (#153), Grok 3: 13.8 (#322)

BenchmarkGPT-5 MiniGrok 3
ARC-AGI-24.4%0%
Kagi LLM Benchmark70.3%61.3%
ARC-AGI-154.3%5.5%
LMArena Hard Prompts13801433
Epoch Capabilities Index145.51138.34
SimpleBench—36.1%
CritPt0%—
Chess Puzzles30%—
EnigmaEval8.2%—
Mystery Game Puzzles10%—
DTBench80.5%—
LMCA34.2%—
ForecastBench61—

Math GPT-5 Mini leads

GPT-5 Mini: 46.3 (#59), Grok 3: 36.2 (#122)

BenchmarkGPT-5 MiniGrok 3
OTIS Mock AIME 2024-202586.7%55.6%
Omni-MATH72.2%46.4%
LMArena Math13771390
MATH Level 597.8%88.7%
FrontierMath (Feb 2025 set)27.2%3.8%
FrontierMath Tier 4 (v1)6.3%0%
FrontierMath (Tiers 1-3)46.7%—
FrontierMath Tier 412.2%—
ProofBench9%—

Knowledge Too close to call

GPT-5 Mini: 45.5 (#80), Grok 3: 46.0 (#76)

BenchmarkGPT-5 MiniGrok 3
GPQA Diamond75%75.8%
MMLU-Pro83.5%78.8%
Confabulations13.3%14.2%
Vectara Hallucination Rate12.9%5.8%
GPQA (HELM)75.6%65%
LMArena Expert13771420
Humanity's Last Exam19.4%—
SimpleQA Verified21.6%—

Multimodal Not comparable

GPT-5 Mini: 35.0 (#80), Grok 3: —

BenchmarkGPT-5 MiniGrok 3
LMArena Vision1202—
VPCT40.2%—

Multilingual Grok 3 leads

GPT-5 Mini: 49.1 (#131), Grok 3: 52.5 (#81)

BenchmarkGPT-5 MiniGrok 3
LMArena Non-English13631411
LMArena Chinese13871448
LMArena French13851460
LMArena German13661431
LMArena Japanese13421389
LMArena Korean13061374
LMArena Russian13621416
LMArena Spanish13551417

Instruction Following GPT-5 Mini leads

GPT-5 Mini: 76.4 (#43), Grok 3: 75.2 (#69)

BenchmarkGPT-5 MiniGrok 3
IFEval92.7%88.4%
LMArena Instruction Following13571409

Long Context GPT-5 Mini leads

GPT-5 Mini: 41.9 (#127), Grok 3: 38.7 (#187)

BenchmarkGPT-5 MiniGrok 3
Fiction.LiveBench69.4%58.3%
LMArena Longer Query13551439

Writing & Preference Too close to call

GPT-5 Mini: 55.4 (#143), Grok 3: 56.0 (#136)

BenchmarkGPT-5 MiniGrok 3
LMArena Text13731426
LMArena Creative Writing13251414
Short-Story Creative Writing83.1%76.4%
EQ-Bench Creative Writing13131186
WildBench85.5%84.9%
LMArena Multi-Turn13631424

Frequently asked questions

Is GPT-5 Mini better than Grok 3?

GPT-5 Mini is the stronger model overall, scoring 41.7 to 39.6 on the Noometry Index.

Is GPT-5 Mini or Grok 3 better for coding?

Grok 3 scores higher on coding benchmarks: 41.5 versus 40.0 in the Noometry coding category.

How many benchmarks do GPT-5 Mini and Grok 3 share?

37 benchmarks have published results for both models. GPT-5 Mini has 60 scored results on Noometry and Grok 3 has 40.

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