Noometry

Model comparison

GPT-6 Luna vs Granite 4.0 H Small

GPT-6 Luna is the stronger model overall, scoring 53.3 to 36.5 on the Noometry Index.

Last verified . 13 shared benchmarks.

GPT-6 Luna OpenAI

53.3

Rank #36 Confirmed

Granite 4.0 H Small IBM

36.5

Rank #214 Confirmed

Summary

  • They share 13 benchmarks with published results for both. GPT-6 Luna scores higher in 8 categories and Granite 4.0 H Small in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in math, where GPT-6 Luna leads 76.1 to 31.4.
  • Granite 4.0 H Small has downloadable open weights; the other is API-only.

Side by side

GPT-6 LunaGranite 4.0 H Small
ProviderOpenAIIBM
Noometry Index53.336.5
Released2026-09-22—
WeightsProprietaryOpen
Context window1.05M—
Max output128K—
Input $ / M tokens$0.10—
Output $ / M tokens$0.50—
Results tracked4219

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Category by category

Coding GPT-6 Luna leads

GPT-6 Luna: 55.5 (#25), Granite 4.0 H Small: 36.4 (#209)

BenchmarkGPT-6 LunaGranite 4.0 H Small
LMArena Coding14391249
DeepSWE66.6%—
FrontierCode42.4%—
LMArena WebDev1581—
SciCode54.6%—
ALE-Bench1,577—

Agentic & Tool Use Not comparable

GPT-6 Luna: 33.3 (#54), Granite 4.0 H Small: —

BenchmarkGPT-6 LunaGranite 4.0 H Small
APEX-Agents44.3%—
GDP.pdf23%—

Reasoning GPT-6 Luna leads

GPT-6 Luna: 48.2 (#41), Granite 4.0 H Small: 24.4 (#163)

BenchmarkGPT-6 LunaGranite 4.0 H Small
LMArena Hard Prompts14111240
ARC-AGI-259.3%—
NYT Connections (extended)68.7%—
ARC-AGI-186.7%—
CritPt19.4%—
Chess Puzzles31%—
Mystery Game Puzzles7%—
DTBench90.1%—
LMCA44.5%—
Epoch Capabilities Index156.28—

Math GPT-6 Luna leads

GPT-6 Luna: 76.1 (#15), Granite 4.0 H Small: 31.4 (#223)

BenchmarkGPT-6 LunaGranite 4.0 H Small
LMArena Math14161247
FrontierMath (Tiers 1-3)78.9%—
FrontierMath Tier 456.1%—
OTIS Mock AIME 2024-202598.9%—
ProofBench64%—
Omni-MATH—29.6%

Knowledge GPT-6 Luna leads

GPT-6 Luna: 57.0 (#41), Granite 4.0 H Small: 32.0 (#215)

BenchmarkGPT-6 LunaGranite 4.0 H Small
LMArena Expert14441251
GPQA Diamond90.5%—
SimpleQA Verified41.4%—
MMLU-Pro—56.9%
Vectara Hallucination Rate—5.2%
GPQA (HELM)—38.3%

Multimodal Not comparable

GPT-6 Luna: 42.4 (#30), Granite 4.0 H Small: —

BenchmarkGPT-6 LunaGranite 4.0 H Small
LMArena Vision1217—
Blueprint-Bench 231.2%—
Furniture Assembly44.2%—

Multilingual GPT-6 Luna leads

GPT-6 Luna: 50.5 (#117), Granite 4.0 H Small: 38.6 (#228)

BenchmarkGPT-6 LunaGranite 4.0 H Small
LMArena Non-English13861216
LMArena Chinese14331249
LMArena Russian13941201
LMArena Spanish13931258
LMArena French1420—
LMArena German1369—
LMArena Japanese1369—
LMArena Korean1360—

Instruction Following GPT-6 Luna leads

GPT-6 Luna: 74.3 (#99), Granite 4.0 H Small: 68.7 (#183)

BenchmarkGPT-6 LunaGranite 4.0 H Small
LMArena Instruction Following14091222
IFEval—89%

Long Context GPT-6 Luna leads

GPT-6 Luna: 43.0 (#111), Granite 4.0 H Small: 37.7 (#213)

BenchmarkGPT-6 LunaGranite 4.0 H Small
LMArena Longer Query14091242

Writing & Preference GPT-6 Luna leads

GPT-6 Luna: 58.3 (#119), Granite 4.0 H Small: 43.8 (#227)

BenchmarkGPT-6 LunaGranite 4.0 H Small
LMArena Text13911241
LMArena Creative Writing13631211
LMArena Multi-Turn13961242
WildBench—73.9%

Frequently asked questions

Is GPT-6 Luna better than Granite 4.0 H Small?

GPT-6 Luna is the stronger model overall, scoring 53.3 to 36.5 on the Noometry Index.

Is GPT-6 Luna or Granite 4.0 H Small better for coding?

GPT-6 Luna scores higher on coding benchmarks: 55.5 versus 36.4 in the Noometry coding category.

How many benchmarks do GPT-6 Luna and Granite 4.0 H Small share?

13 benchmarks have published results for both models. GPT-6 Luna has 42 scored results on Noometry and Granite 4.0 H Small has 19.

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