Noometry

Model comparison

GPT-5 Nano vs Granite 4.1 8b

Granite 4.1 8b is the stronger model overall, scoring 37.4 to 33.5 on the Noometry Index.

Last verified . 12 shared benchmarks.

GPT-5 Nano OpenAI

33.5

Rank #241 Confirmed

Granite 4.1 8b IBM

37.4

Rank #205 Confirmed

Summary

  • They share 12 benchmarks with published results for both. GPT-5 Nano scores higher in 3 categories and Granite 4.1 8b in 5 categories; 7 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Granite 4.1 8b leads 25.7 to 16.3.
  • Granite 4.1 8b has downloadable open weights; the other is API-only.

Side by side

GPT-5 NanoGranite 4.1 8b
ProviderOpenAIIBM
Noometry Index33.537.4
Released2025-08-07—
WeightsProprietaryOpen
Context window400K—
Max output128K—
Input $ / M tokens$0.05—
Output $ / M tokens$0.40—
Results tracked4913

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Category by category

Coding GPT-5 Nano leads

GPT-5 Nano: 33.6 (#254), Granite 4.1 8b: 30.1 (#297)

BenchmarkGPT-5 NanoGranite 4.1 8b
LMArena Coding13511312
SWE-bench Verified (bash only)34.8%—
LMArena WebDev—1192
WeirdML38.1%—
ALE-Bench718.67—

Agentic & Tool Use Not comparable

GPT-5 Nano: 25.8 (#106), Granite 4.1 8b: —

BenchmarkGPT-5 NanoGranite 4.1 8b
Terminal-Bench21.8%—
Berkeley Function Calling Leaderboard51.5%—

Reasoning Granite 4.1 8b leads

GPT-5 Nano: 16.3 (#306), Granite 4.1 8b: 25.7 (#143)

BenchmarkGPT-5 NanoGranite 4.1 8b
LMArena Hard Prompts13281293
ARC-AGI-22.6%—
Kagi LLM Benchmark62.2%—
ARC-AGI-120.7%—
Chess Puzzles27%—
Mystery Game Puzzles9%—
DTBench62.7%—
LMCA7.9%—
Epoch Capabilities Index139.38—
ForecastBench59.1—

Math Granite 4.1 8b leads

GPT-5 Nano: 29.4 (#241), Granite 4.1 8b: 36.4 (#166)

BenchmarkGPT-5 NanoGranite 4.1 8b
LMArena Math13171312
FrontierMath (Tiers 1-3)20%—
FrontierMath Tier 42.4%—
OTIS Mock AIME 2024-202581.1%—
ProofBench12%—
Omni-MATH54.6%—
MATH Level 595.2%—
FrontierMath (Feb 2025 set)8.3%—
FrontierMath Tier 4 (v1)2.1%—

Knowledge Too close to call

GPT-5 Nano: 35.9 (#178), Granite 4.1 8b: 36.1 (#174)

BenchmarkGPT-5 NanoGranite 4.1 8b
LMArena Expert13211309
GPQA Diamond69.4%—
SimpleQA Verified11.7%—
MMLU-Pro77.8%—
Vectara Hallucination Rate10.5%—
GPQA (HELM)67.9%—

Multimodal Not comparable

GPT-5 Nano: 31.3 (#108), Granite 4.1 8b: —

BenchmarkGPT-5 NanoGranite 4.1 8b
LMArena Vision1159—
VPCT37.2%—

Multilingual GPT-5 Nano leads

GPT-5 Nano: 45.3 (#172), Granite 4.1 8b: 41.7 (#204)

BenchmarkGPT-5 NanoGranite 4.1 8b
LMArena Non-English13131261
LMArena Chinese13561337
LMArena Russian12961240
LMArena German1327—
LMArena Japanese1226—
LMArena Korean1269—
LMArena Spanish1360—

Instruction Following GPT-5 Nano leads

GPT-5 Nano: 75.0 (#79), Granite 4.1 8b: 66.9 (#203)

BenchmarkGPT-5 NanoGranite 4.1 8b
LMArena Instruction Following13061269
IFEval93.2%—

Long Context Granite 4.1 8b leads

GPT-5 Nano: 31.3 (#281), Granite 4.1 8b: 38.7 (#193)

BenchmarkGPT-5 NanoGranite 4.1 8b
LMArena Longer Query13121275
Fiction.LiveBench44.4%—

Writing & Preference Granite 4.1 8b leads

GPT-5 Nano: 39.1 (#249), Granite 4.1 8b: 48.1 (#204)

BenchmarkGPT-5 NanoGranite 4.1 8b
LMArena Text13201290
LMArena Creative Writing12491251
LMArena Multi-Turn13111268
EQ-Bench Creative Writing705—
WildBench80.6%—

Frequently asked questions

Is GPT-5 Nano better than Granite 4.1 8b?

Granite 4.1 8b is the stronger model overall, scoring 37.4 to 33.5 on the Noometry Index.

Is GPT-5 Nano or Granite 4.1 8b better for coding?

GPT-5 Nano scores higher on coding benchmarks: 33.6 versus 30.1 in the Noometry coding category.

How many benchmarks do GPT-5 Nano and Granite 4.1 8b share?

12 benchmarks have published results for both models. GPT-5 Nano has 49 scored results on Noometry and Granite 4.1 8b has 13.

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