Noometry

Model comparison

GPT-6 Luna vs Granite 4.1 8b

GPT-6 Luna is the stronger model overall, scoring 53.3 to 37.4 on the Noometry Index.

Last verified . 13 shared benchmarks.

GPT-6 Luna OpenAI

53.3

Rank #36 Confirmed

Granite 4.1 8b IBM

37.4

Rank #205 Confirmed

Summary

  • They share 13 benchmarks with published results for both. GPT-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-6 Luna leads 76.1 to 36.4.
  • Granite 4.1 8b has downloadable open weights; the other is API-only.

Side by side

GPT-6 LunaGranite 4.1 8b
ProviderOpenAIIBM
Noometry Index53.337.4
Released2026-09-22—
WeightsProprietaryOpen
Context window1.05M—
Max output128K—
Input $ / M tokens$0.10—
Output $ / M tokens$0.50—
Results tracked4213

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Category by category

Coding GPT-6 Luna leads

GPT-6 Luna: 55.5 (#25), Granite 4.1 8b: 30.1 (#297)

BenchmarkGPT-6 LunaGranite 4.1 8b
LMArena WebDev15811192
LMArena Coding14391312
DeepSWE66.6%—
FrontierCode42.4%—
SciCode54.6%—
ALE-Bench1,577—

Agentic & Tool Use Not comparable

GPT-6 Luna: 33.3 (#54), Granite 4.1 8b: —

BenchmarkGPT-6 LunaGranite 4.1 8b
APEX-Agents44.3%—
GDP.pdf23%—

Reasoning GPT-6 Luna leads

GPT-6 Luna: 48.2 (#41), Granite 4.1 8b: 25.7 (#143)

BenchmarkGPT-6 LunaGranite 4.1 8b
LMArena Hard Prompts14111293
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 4.1 8b: 36.4 (#166)

BenchmarkGPT-6 LunaGranite 4.1 8b
LMArena Math14161312
FrontierMath (Tiers 1-3)78.9%—
FrontierMath Tier 456.1%—
OTIS Mock AIME 2024-202598.9%—
ProofBench64%—

Knowledge GPT-6 Luna leads

GPT-6 Luna: 57.0 (#41), Granite 4.1 8b: 36.1 (#174)

BenchmarkGPT-6 LunaGranite 4.1 8b
LMArena Expert14441309
GPQA Diamond90.5%—
SimpleQA Verified41.4%—

Multimodal Not comparable

GPT-6 Luna: 42.4 (#30), Granite 4.1 8b: —

BenchmarkGPT-6 LunaGranite 4.1 8b
LMArena Vision1217—
Blueprint-Bench 231.2%—
Furniture Assembly44.2%—

Multilingual GPT-6 Luna leads

GPT-6 Luna: 50.5 (#117), Granite 4.1 8b: 41.7 (#204)

BenchmarkGPT-6 LunaGranite 4.1 8b
LMArena Non-English13861261
LMArena Chinese14331337
LMArena Russian13941240
LMArena French1420—
LMArena German1369—
LMArena Japanese1369—
LMArena Korean1360—
LMArena Spanish1393—

Instruction Following GPT-6 Luna leads

GPT-6 Luna: 74.3 (#99), Granite 4.1 8b: 66.9 (#203)

BenchmarkGPT-6 LunaGranite 4.1 8b
LMArena Instruction Following14091269

Long Context GPT-6 Luna leads

GPT-6 Luna: 43.0 (#111), Granite 4.1 8b: 38.7 (#193)

BenchmarkGPT-6 LunaGranite 4.1 8b
LMArena Longer Query14091275

Writing & Preference GPT-6 Luna leads

GPT-6 Luna: 58.3 (#119), Granite 4.1 8b: 48.1 (#204)

BenchmarkGPT-6 LunaGranite 4.1 8b
LMArena Text13911290
LMArena Creative Writing13631251
LMArena Multi-Turn13961268

Frequently asked questions

Is GPT-6 Luna better than Granite 4.1 8b?

GPT-6 Luna is the stronger model overall, scoring 53.3 to 37.4 on the Noometry Index.

Is GPT-6 Luna or Granite 4.1 8b better for coding?

GPT-6 Luna scores higher on coding benchmarks: 55.5 versus 30.1 in the Noometry coding category.

How many benchmarks do GPT-6 Luna and Granite 4.1 8b share?

13 benchmarks have published results for both models. GPT-6 Luna has 42 scored results on Noometry and Granite 4.1 8b has 13.

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