Noometry

Model comparison

Claude Opus 5.5 vs Granite 4.0 Micro

Claude Opus 5.5 is the stronger model overall, scoring 68.6 to 29.0 on the Noometry Index. Granite 4.0 Micro costs 196× less per token, which makes it the better buy when Claude Opus 5.5's lead doesn't matter for your workload.

Last verified . 2 shared benchmarks.

Claude Opus 5.5 Anthropic

68.6

Rank #3 Confirmed

Granite 4.0 Micro IBM

29.0

Rank #318 Confirmed

Summary

  • They share 2 benchmarks with published results for both. Claude Opus 5.5 scores higher in 5 categories and Granite 4.0 Micro in 0 categories; 5 gaps are clear of the uncertainty.
  • The widest gap is in math, where Claude Opus 5.5 leads 91.8 to 12.0.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 100% for Claude Opus 5.5 and 2.8% for Granite 4.0 Micro.
  • Granite 4.0 Micro is cheaper at $0.017 / $0.11 per million input/output tokens, against $4 / $20 for Claude Opus 5.5.
  • Claude Opus 5.5 accepts more context: 1M tokens versus 131K.
  • Granite 4.0 Micro has downloadable open weights; the other is API-only.

Side by side

Claude Opus 5.5Granite 4.0 Micro
ProviderAnthropicIBM
Noometry Index68.629.0
Released2026-09-222025-10-02
WeightsProprietaryOpen
Context window1M131K
Max output128K118K
Input $ / M tokens$4$0.017
Output $ / M tokens$20$0.11
Results tracked448

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Category by category

Coding Not comparable

Claude Opus 5.5: 71.9 (#3), Granite 4.0 Micro: —

BenchmarkClaude Opus 5.5Granite 4.0 Micro
FrontierCode54.6%—
CursorBench57.8%—
LMArena WebDev1813—
FrontierSWE62.3%—
SciCode66.9%—
LMArena Coding1547—
MirrorCode77.4%—
ALE-Bench2,147—

Agentic & Tool Use Not comparable

Claude Opus 5.5: 45.3 (#15), Granite 4.0 Micro: —

BenchmarkClaude Opus 5.5Granite 4.0 Micro
APEX-Agents73.5%—
GDP.pdf30.6%—
Vending-Bench 29,235—

Reasoning Claude Opus 5.5 leads

Claude Opus 5.5: 80.2 (#3), Granite 4.0 Micro: 19.2 (#265)

BenchmarkClaude Opus 5.5Granite 4.0 Micro
ARC-AGI-293.3%—
NYT Connections (extended)88.5%—
ARC-AGI-198.5%—
CritPt31.7%—
Chess Puzzles—0%
EBR-Bench71.4%—
LMArena Hard Prompts1535—
Mystery Game Puzzles71%—
DTBench98.9%—
LMCA68.2%—
Epoch Capabilities Index167.33—

Math Claude Opus 5.5 leads

Claude Opus 5.5: 91.8 (#3), Granite 4.0 Micro: 12.0 (#307)

BenchmarkClaude Opus 5.5Granite 4.0 Micro
OTIS Mock AIME 2024-2025100%2.8%
FrontierMath (Tiers 1-3)91.2%—
FrontierMath Tier 495%—
ProofBench100%—
Omni-MATH—20.9%
LMArena Math1506—
FrontierMath Erdős2.9%—

Knowledge Claude Opus 5.5 leads

Claude Opus 5.5: 66.4 (#10), Granite 4.0 Micro: 9.9 (#304)

BenchmarkClaude Opus 5.5Granite 4.0 Micro
GPQA Diamond90.6%28.3%
SimpleQA Verified72.2%—
MMLU-Pro—39.5%
GPQA (HELM)—30.7%
LMArena Expert1547—

Multimodal Not comparable

Claude Opus 5.5: 57.8 (#1), Granite 4.0 Micro: —

BenchmarkClaude Opus 5.5Granite 4.0 Micro
LMArena Vision1321—
Blueprint-Bench 251.2%—
Furniture Assembly83.3%—

Multilingual Not comparable

Claude Opus 5.5: 59.1 (#2), Granite 4.0 Micro: —

BenchmarkClaude Opus 5.5Granite 4.0 Micro
LMArena Non-English1507—
LMArena Chinese1588—
LMArena French1514—
LMArena Russian1520—
LMArena Spanish1507—

Instruction Following Claude Opus 5.5 leads

Claude Opus 5.5: 80.0 (#3), Granite 4.0 Micro: 69.9 (#169)

BenchmarkClaude Opus 5.5Granite 4.0 Micro
IFEval—84.9%
LMArena Instruction Following1537—

Long Context Not comparable

Claude Opus 5.5: 47.1 (#19), Granite 4.0 Micro: —

BenchmarkClaude Opus 5.5Granite 4.0 Micro
LMArena Longer Query1532—

Writing & Preference Claude Opus 5.5 leads

Claude Opus 5.5: 78.2 (#3), Granite 4.0 Micro: 46.7 (#216)

BenchmarkClaude Opus 5.5Granite 4.0 Micro
LMArena Text1515—
LMArena Creative Writing1533—
EQ-Bench Creative Writing2050—
WildBench—67%
LMArena Multi-Turn1499—

Frequently asked questions

Is Claude Opus 5.5 better than Granite 4.0 Micro?

Claude Opus 5.5 is the stronger model overall, scoring 68.6 to 29.0 on the Noometry Index. Granite 4.0 Micro costs 196× less per token, which makes it the better buy when Claude Opus 5.5's lead doesn't matter for your workload.

Which is cheaper, Claude Opus 5.5 or Granite 4.0 Micro?

Granite 4.0 Micro is cheaper. It lists at $0.017 per million input tokens and $0.11 per million output tokens; Claude Opus 5.5 lists at $4 and $20.

Which has the bigger context window?

Claude Opus 5.5 does, with 1M tokens against 131K.

How many benchmarks do Claude Opus 5.5 and Granite 4.0 Micro share?

2 benchmarks have published results for both models. Claude Opus 5.5 has 44 scored results on Noometry and Granite 4.0 Micro has 8.

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