Noometry

Model comparison

Claude Opus 5.5 vs Granite 4.2 30b

Claude Opus 5.5 is the stronger model overall, scoring 68.6 to 41.8 on the Noometry Index.

Last verified . 11 shared benchmarks.

Claude Opus 5.5 Anthropic

68.6

Rank #3 Confirmed

Granite 4.2 30b IBM

41.8

Rank #130 Confirmed

Summary

  • They share 11 benchmarks with published results for both. Claude Opus 5.5 scores higher in 7 categories and Granite 4.2 30b in 0 categories; 7 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Claude Opus 5.5 leads 80.2 to 27.8.
  • Granite 4.2 30b has downloadable open weights; the other is API-only.

Side by side

Claude Opus 5.5Granite 4.2 30b
ProviderAnthropicIBM
Noometry Index68.641.8
Released2026-09-22—
WeightsProprietaryOpen
Context window1M—
Max output128K—
Input $ / M tokens$4—
Output $ / M tokens$20—
Results tracked4411

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Category by category

Coding Claude Opus 5.5 leads

Claude Opus 5.5: 71.9 (#3), Granite 4.2 30b: 41.0 (#126)

BenchmarkClaude Opus 5.5Granite 4.2 30b
LMArena Coding15471396
FrontierCode54.6%—
CursorBench57.8%—
LMArena WebDev1813—
FrontierSWE62.3%—
SciCode66.9%—
MirrorCode77.4%—
ALE-Bench2,147—

Agentic & Tool Use Not comparable

Claude Opus 5.5: 45.3 (#15), Granite 4.2 30b: —

BenchmarkClaude Opus 5.5Granite 4.2 30b
APEX-Agents73.5%—
GDP.pdf30.6%—
Vending-Bench 29,235—

Reasoning Claude Opus 5.5 leads

Claude Opus 5.5: 80.2 (#3), Granite 4.2 30b: 27.8 (#112)

BenchmarkClaude Opus 5.5Granite 4.2 30b
LMArena Hard Prompts15351374
ARC-AGI-293.3%—
NYT Connections (extended)88.5%—
ARC-AGI-198.5%—
CritPt31.7%—
EBR-Bench71.4%—
Mystery Game Puzzles71%—
DTBench98.9%—
LMCA68.2%—
Epoch Capabilities Index167.33—

Math Not comparable

Claude Opus 5.5: 91.8 (#3), Granite 4.2 30b: —

BenchmarkClaude Opus 5.5Granite 4.2 30b
FrontierMath (Tiers 1-3)91.2%—
FrontierMath Tier 495%—
OTIS Mock AIME 2024-2025100%—
ProofBench100%—
LMArena Math1506—
FrontierMath Erdős2.9%—

Knowledge Claude Opus 5.5 leads

Claude Opus 5.5: 66.4 (#10), Granite 4.2 30b: 39.1 (#138)

BenchmarkClaude Opus 5.5Granite 4.2 30b
LMArena Expert15471406
GPQA Diamond90.6%—
SimpleQA Verified72.2%—

Multimodal Not comparable

Claude Opus 5.5: 57.8 (#1), Granite 4.2 30b: —

BenchmarkClaude Opus 5.5Granite 4.2 30b
LMArena Vision1321—
Blueprint-Bench 251.2%—
Furniture Assembly83.3%—

Multilingual Claude Opus 5.5 leads

Claude Opus 5.5: 59.1 (#2), Granite 4.2 30b: 47.3 (#151)

BenchmarkClaude Opus 5.5Granite 4.2 30b
LMArena Non-English15071340
LMArena Chinese15881414
LMArena Russian15201343
LMArena French1514—
LMArena Spanish1507—

Instruction Following Claude Opus 5.5 leads

Claude Opus 5.5: 80.0 (#3), Granite 4.2 30b: 71.2 (#155)

BenchmarkClaude Opus 5.5Granite 4.2 30b
LMArena Instruction Following15371347

Long Context Claude Opus 5.5 leads

Claude Opus 5.5: 47.1 (#19), Granite 4.2 30b: 41.4 (#140)

BenchmarkClaude Opus 5.5Granite 4.2 30b
LMArena Longer Query15321359

Writing & Preference Claude Opus 5.5 leads

Claude Opus 5.5: 78.2 (#3), Granite 4.2 30b: 53.8 (#156)

BenchmarkClaude Opus 5.5Granite 4.2 30b
LMArena Text15151361
LMArena Creative Writing15331288
LMArena Multi-Turn14991339
EQ-Bench Creative Writing2050—

Frequently asked questions

Is Claude Opus 5.5 better than Granite 4.2 30b?

Claude Opus 5.5 is the stronger model overall, scoring 68.6 to 41.8 on the Noometry Index.

Is Claude Opus 5.5 or Granite 4.2 30b better for coding?

Claude Opus 5.5 scores higher on coding benchmarks: 71.9 versus 41.0 in the Noometry coding category.

How many benchmarks do Claude Opus 5.5 and Granite 4.2 30b share?

11 benchmarks have published results for both models. Claude Opus 5.5 has 44 scored results on Noometry and Granite 4.2 30b has 11.

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