Noometry

Model comparison

GPT-6 Astra vs Granite 4.1 8b

GPT-6 Astra is the stronger model overall, scoring 70.3 to 36.8 on the Noometry Index.

Last verified . 13 shared benchmarks.

GPT-6 Astra OpenAI

70.3

Rank #1 Confirmed

Granite 4.1 8b IBM

36.8

Rank #202 Confirmed

Summary

  • They share 13 benchmarks with published results for both. GPT-6 Astra 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 reasoning, where GPT-6 Astra leads 85.1 to 24.6.
  • Granite 4.1 8b has downloadable open weights; the other is API-only.

Side by side

GPT-6 AstraGranite 4.1 8b
ProviderOpenAIIBM
Noometry Index70.336.8
Released2026-09-03—
WeightsProprietaryOpen
Context window1.05M—
Max output128K—
Input $ / M tokens$10—
Output $ / M tokens$50—
Results tracked5113

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Category by category

Coding GPT-6 Astra leads

GPT-6 Astra: 70.5 (#3), Granite 4.1 8b: 29.9 (#291)

BenchmarkGPT-6 AstraGranite 4.1 8b
LMArena WebDev17921190
LMArena Coding14881313
DeepSWE74.1%—
FrontierCode53.3%—
FrontierSWE65.5%—
SciCode56.5%—
WeirdML93.6%—
MirrorCode46.7%—
ALE-Bench2,951—

Agentic & Tool Use Not comparable

GPT-6 Astra: 52.3 (#3), Granite 4.1 8b: —

BenchmarkGPT-6 AstraGranite 4.1 8b
APEX-Agents64.7%—
Remote Labor Index20.8%—
BALROG68.3%—
Vending-Bench 215,515—

Reasoning GPT-6 Astra leads

GPT-6 Astra: 85.1 (#1), Granite 4.1 8b: 24.6 (#142)

BenchmarkGPT-6 AstraGranite 4.1 8b
LMArena Hard Prompts14641294
ARC-AGI-295%—
NYT Connections (extended)98.1%—
ARC-AGI-198.5%—
CritPt31.7%—
Chess Puzzles72%—
EBR-Bench76.2%—
Mystery Game Puzzles84%—
DTBench97.3%—
LMCA64.4%—
Bench to the Future 30.14—
Epoch Capabilities Index166.6—

Math GPT-6 Astra leads

GPT-6 Astra: 93.4 (#1), Granite 4.1 8b: 33.8 (#167)

BenchmarkGPT-6 AstraGranite 4.1 8b
LMArena Math14631311
FrontierMath (Tiers 1-3)93.7%—
FrontierMath Tier 497.6%—
OTIS Mock AIME 2024-2025100%—
ProofBench99%—
FrontierMath Erdős2.9%—

Knowledge GPT-6 Astra leads

GPT-6 Astra: 75.3 (#1), Granite 4.1 8b: 35.5 (#171)

BenchmarkGPT-6 AstraGranite 4.1 8b
LMArena Expert14861310
GPQA Diamond95.8%—
Humanity's Last Exam54.8%—
SimpleQA Verified75.6%—
Vectara Hallucination Rate8.7%—

Multimodal Not comparable

GPT-6 Astra: 55.1 (#3), Granite 4.1 8b: —

BenchmarkGPT-6 AstraGranite 4.1 8b
LMArena Vision1280—
Blueprint-Bench 249.7%—
Furniture Assembly80%—
LMArena Document1468—

Multilingual GPT-6 Astra leads

GPT-6 Astra: 54.0 (#53), Granite 4.1 8b: 41.8 (#199)

BenchmarkGPT-6 AstraGranite 4.1 8b
LMArena Non-English14311261
LMArena Chinese14951335
LMArena Russian14341238
LMArena French1467—
LMArena Spanish1412—

Instruction Following GPT-6 Astra leads

GPT-6 Astra: 76.6 (#37), Granite 4.1 8b: 67.0 (#198)

BenchmarkGPT-6 AstraGranite 4.1 8b
LMArena Instruction Following14541268

Long Context GPT-6 Astra leads

GPT-6 Astra: 44.7 (#57), Granite 4.1 8b: 38.7 (#188)

BenchmarkGPT-6 AstraGranite 4.1 8b
LMArena Longer Query14601275

Writing & Preference GPT-6 Astra leads

GPT-6 Astra: 75.7 (#7), Granite 4.1 8b: 48.3 (#199)

BenchmarkGPT-6 AstraGranite 4.1 8b
LMArena Text14431291
LMArena Creative Writing14231249
LMArena Multi-Turn14571269
EQ-Bench Creative Writing2173—

Frequently asked questions

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

GPT-6 Astra is the stronger model overall, scoring 70.3 to 36.8 on the Noometry Index.

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

GPT-6 Astra scores higher on coding benchmarks: 70.5 versus 29.9 in the Noometry coding category.

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

13 benchmarks have published results for both models. GPT-6 Astra has 51 scored results on Noometry and Granite 4.1 8b has 13.

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