Noometry

Model comparison

Claude Opus 5.5 vs Granite 4.1 8b

Claude Opus 5.5 is the stronger model overall, scoring 68.5 to 36.8 on the Noometry Index.

Last verified . 12 shared benchmarks.

Claude Opus 5.5 Anthropic

68.5

Rank #3 Confirmed

Granite 4.1 8b IBM

36.8

Rank #202 Confirmed

Summary

  • They share 12 benchmarks with published results for both. Claude Opus 5.5 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 Claude Opus 5.5 leads 92.4 to 33.8.
  • Granite 4.1 8b has downloadable open weights; the other is API-only.

Side by side

Claude Opus 5.5Granite 4.1 8b
ProviderAnthropicIBM
Noometry Index68.536.8
Released2026-09-22—
WeightsProprietaryOpen
Context window1M—
Max output128K—
Input $ / M tokens$4—
Output $ / M tokens$20—
Results tracked3513

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Category by category

Coding Claude Opus 5.5 leads

Claude Opus 5.5: 71.4 (#1), Granite 4.1 8b: 29.9 (#291)

BenchmarkClaude Opus 5.5Granite 4.1 8b
LMArena WebDev18201190
LMArena Coding15451313
FrontierCode54.4%—
CursorBench57.8%—
FrontierSWE62.3%—
SciCode66.9%—
MirrorCode77.4%—

Agentic & Tool Use Not comparable

Claude Opus 5.5: 45.3 (#13), Granite 4.1 8b: —

BenchmarkClaude Opus 5.5Granite 4.1 8b
APEX-Agents73.5%—
GDP.pdf30.6%—

Reasoning Claude Opus 5.5 leads

Claude Opus 5.5: 79.5 (#2), Granite 4.1 8b: 24.6 (#142)

BenchmarkClaude Opus 5.5Granite 4.1 8b
LMArena Hard Prompts15451294
ARC-AGI-292.5%—
NYT Connections (extended)88.5%—
ARC-AGI-197.5%—
CritPt31.7%—
EBR-Bench71.4%—
Mystery Game Puzzles71%—
DTBench98.9%—
LMCA68.2%—

Math Claude Opus 5.5 leads

Claude Opus 5.5: 92.4 (#2), Granite 4.1 8b: 33.8 (#167)

BenchmarkClaude Opus 5.5Granite 4.1 8b
FrontierMath (Tiers 1-3)91.2%—
FrontierMath Tier 495%—
OTIS Mock AIME 2024-2025100%—
ProofBench100%—
LMArena Math—1311

Knowledge Claude Opus 5.5 leads

Claude Opus 5.5: 66.6 (#9), Granite 4.1 8b: 35.5 (#171)

BenchmarkClaude Opus 5.5Granite 4.1 8b
LMArena Expert15641310
GPQA Diamond90.6%—
SimpleQA Verified72.2%—

Multimodal Not comparable

Claude Opus 5.5: 56.5 (#2), Granite 4.1 8b: —

BenchmarkClaude Opus 5.5Granite 4.1 8b
Furniture Assembly83.3%—

Multilingual Claude Opus 5.5 leads

Claude Opus 5.5: 59.8 (#1), Granite 4.1 8b: 41.8 (#199)

BenchmarkClaude Opus 5.5Granite 4.1 8b
LMArena Non-English15131261
LMArena Chinese15721335
LMArena Russian15321238

Instruction Following Claude Opus 5.5 leads

Claude Opus 5.5: 80.1 (#2), Granite 4.1 8b: 67.0 (#198)

BenchmarkClaude Opus 5.5Granite 4.1 8b
LMArena Instruction Following15351268

Long Context Claude Opus 5.5 leads

Claude Opus 5.5: 47.3 (#18), Granite 4.1 8b: 38.7 (#188)

BenchmarkClaude Opus 5.5Granite 4.1 8b
LMArena Longer Query15401275

Writing & Preference Claude Opus 5.5 leads

Claude Opus 5.5: 78.7 (#3), Granite 4.1 8b: 48.3 (#199)

BenchmarkClaude Opus 5.5Granite 4.1 8b
LMArena Text15181291
LMArena Creative Writing15381249
LMArena Multi-Turn15201269
EQ-Bench Creative Writing2050—

Frequently asked questions

Is Claude Opus 5.5 better than Granite 4.1 8b?

Claude Opus 5.5 is the stronger model overall, scoring 68.5 to 36.8 on the Noometry Index.

Is Claude Opus 5.5 or Granite 4.1 8b better for coding?

Claude Opus 5.5 scores higher on coding benchmarks: 71.4 versus 29.9 in the Noometry coding category.

How many benchmarks do Claude Opus 5.5 and Granite 4.1 8b share?

12 benchmarks have published results for both models. Claude Opus 5.5 has 35 scored results on Noometry and Granite 4.1 8b has 13.

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