Noometry

Model comparison

GPT-5.6 Luna vs Granite 4.1 8b

GPT-5.6 Luna is the stronger model overall, scoring 54.6 to 37.4 on the Noometry Index.

Last verified . 13 shared benchmarks.

GPT-5.6 Luna OpenAI

54.6

Rank #30 Confirmed

Granite 4.1 8b IBM

37.4

Rank #205 Confirmed

Summary

  • They share 13 benchmarks with published results for both. GPT-5.6 Luna scores higher in 8 categories and Granite 4.1 8b in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in math, where GPT-5.6 Luna leads 77.7 to 36.4.
  • Granite 4.1 8b has downloadable open weights; the other is API-only.

Side by side

GPT-5.6 LunaGranite 4.1 8b
ProviderOpenAIIBM
Noometry Index54.637.4
Released2026-07-09—
WeightsProprietaryOpen
Context window1.05M—
Max output128K—
Input $ / M tokens$0.20—
Output $ / M tokens$1.20—
Results tracked5213

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Category by category

Coding GPT-5.6 Luna leads

GPT-5.6 Luna: 54.5 (#28), Granite 4.1 8b: 30.1 (#297)

BenchmarkGPT-5.6 LunaGranite 4.1 8b
LMArena WebDev15191192
LMArena Coding14661312
DeepSWE67.2%—
FrontierCode39.8%—
CursorBench35.9%—
SciCode53.6%—
WeirdML60.9%—
ALE-Bench1,667—

Agentic & Tool Use Not comparable

GPT-5.6 Luna: 34.4 (#45), Granite 4.1 8b: —

BenchmarkGPT-5.6 LunaGranite 4.1 8b
APEX-Agents43%—
BALROG45.6%—
GDP.pdf22.7%—
Vending-Bench 24,095—

Reasoning GPT-5.6 Luna leads

GPT-5.6 Luna: 47.6 (#43), Granite 4.1 8b: 25.7 (#143)

BenchmarkGPT-5.6 LunaGranite 4.1 8b
LMArena Hard Prompts14511293
ARC-AGI-259.5%—
SimpleBench46.8%—
Kagi LLM Benchmark49.1%—
NYT Connections (extended)69.4%—
ARC-AGI-188%—
CritPt20.6%—
Chess Puzzles40%—
Mystery Game Puzzles21%—
DTBench89.1%—
LMCA48.5%—
Surface Evolver Bench61.9%—
Epoch Capabilities Index156.39—

Math GPT-5.6 Luna leads

GPT-5.6 Luna: 77.7 (#14), Granite 4.1 8b: 36.4 (#166)

BenchmarkGPT-5.6 LunaGranite 4.1 8b
LMArena Math14581312
FrontierMath (Tiers 1-3)82.1%—
FrontierMath Tier 461%—
OTIS Mock AIME 2024-202598.3%—
ProofBench60%—

Knowledge GPT-5.6 Luna leads

GPT-5.6 Luna: 58.5 (#34), Granite 4.1 8b: 36.1 (#174)

BenchmarkGPT-5.6 LunaGranite 4.1 8b
LMArena Expert14781309
GPQA Diamond91.6%—
SimpleQA Verified41%—

Multimodal Not comparable

GPT-5.6 Luna: 42.7 (#28), Granite 4.1 8b: —

BenchmarkGPT-5.6 LunaGranite 4.1 8b
LMArena Vision1258—
Blueprint-Bench 222.6%—
Furniture Assembly42.5%—
LMArena Document1457—

Multilingual GPT-5.6 Luna leads

GPT-5.6 Luna: 52.8 (#78), Granite 4.1 8b: 41.7 (#204)

BenchmarkGPT-5.6 LunaGranite 4.1 8b
LMArena Non-English14171261
LMArena Chinese14701337
LMArena Russian14281240
LMArena French1456—
LMArena German1454—
LMArena Japanese1411—
LMArena Korean1415—
LMArena Spanish1448—

Instruction Following GPT-5.6 Luna leads

GPT-5.6 Luna: 75.6 (#57), Granite 4.1 8b: 66.9 (#203)

BenchmarkGPT-5.6 LunaGranite 4.1 8b
LMArena Instruction Following14371269

Long Context GPT-5.6 Luna leads

GPT-5.6 Luna: 43.9 (#82), Granite 4.1 8b: 38.7 (#193)

BenchmarkGPT-5.6 LunaGranite 4.1 8b
LMArena Longer Query14361275

Writing & Preference GPT-5.6 Luna leads

GPT-5.6 Luna: 68.0 (#29), Granite 4.1 8b: 48.1 (#204)

BenchmarkGPT-5.6 LunaGranite 4.1 8b
LMArena Text14311290
LMArena Creative Writing13961251
LMArena Multi-Turn14341268
EQ-Bench Creative Writing1829—
EQ-Bench 41156—

Frequently asked questions

Is GPT-5.6 Luna better than Granite 4.1 8b?

GPT-5.6 Luna is the stronger model overall, scoring 54.6 to 37.4 on the Noometry Index.

Is GPT-5.6 Luna or Granite 4.1 8b better for coding?

GPT-5.6 Luna scores higher on coding benchmarks: 54.5 versus 30.1 in the Noometry coding category.

How many benchmarks do GPT-5.6 Luna and Granite 4.1 8b share?

13 benchmarks have published results for both models. GPT-5.6 Luna has 52 scored results on Noometry and Granite 4.1 8b has 13.

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