Model comparison
Claude Opus 5.5 vs Granite 4.1 30B
Claude Opus 5.5 has enough public results to be ranked (#3); Granite 4.1 30B does not yet, so treat this comparison as directional.
Last verified . 2 shared benchmarks.
Summary
- They share 2 benchmarks with published results for both. Claude Opus 5.5 scores higher in 2 categories and Granite 4.1 30B in 0 categories; 2 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Claude Opus 5.5 leads 80.2 to 22.4.
- The biggest single-benchmark swing is SciCode: 66.9% for Claude Opus 5.5 and 25.8% for Granite 4.1 30B.
- Granite 4.1 30B has downloadable open weights; the other is API-only.
Side by side
| Claude Opus 5.5 | Granite 4.1 30B | |
|---|---|---|
| Provider | Anthropic | IBM |
| Noometry Index | 68.6 | 34.0 |
| Released | 2026-09-22 | 2026-04-29 |
| Weights | Proprietary | Open |
| Context window | 1M | — |
| Max output | 128K | — |
| Input $ / M tokens | $4 | — |
| Output $ / M tokens | $20 | — |
| Results tracked | 44 | 2 |
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Category by category
Coding Claude Opus 5.5 leads
Claude Opus 5.5: 71.9 (#3), Granite 4.1 30B: 35.2
| Benchmark | Claude Opus 5.5 | Granite 4.1 30B |
|---|---|---|
| SciCode | 66.9% | 25.8% |
| FrontierCode | 54.6% | — |
| CursorBench | 57.8% | — |
| LMArena WebDev | 1813 | — |
| FrontierSWE | 62.3% | — |
| LMArena Coding | 1547 | — |
| MirrorCode | 77.4% | — |
| ALE-Bench | 2,147 | — |
Agentic & Tool Use Not comparable
Claude Opus 5.5: 45.3 (#15), Granite 4.1 30B: —
| Benchmark | Claude Opus 5.5 | Granite 4.1 30B |
|---|---|---|
| APEX-Agents | 73.5% | — |
| GDP.pdf | 30.6% | — |
| Vending-Bench 2 | 9,235 | — |
Reasoning Claude Opus 5.5 leads
Claude Opus 5.5: 80.2 (#3), Granite 4.1 30B: 22.4
| Benchmark | Claude Opus 5.5 | Granite 4.1 30B |
|---|---|---|
| CritPt | 31.7% | 0% |
| ARC-AGI-2 | 93.3% | — |
| NYT Connections (extended) | 88.5% | — |
| ARC-AGI-1 | 98.5% | — |
| EBR-Bench | 71.4% | — |
| LMArena Hard Prompts | 1535 | — |
| Mystery Game Puzzles | 71% | — |
| DTBench | 98.9% | — |
| LMCA | 68.2% | — |
| Epoch Capabilities Index | 167.33 | — |
Math Not comparable
Claude Opus 5.5: 91.8 (#3), Granite 4.1 30B: —
| Benchmark | Claude Opus 5.5 | Granite 4.1 30B |
|---|---|---|
| FrontierMath (Tiers 1-3) | 91.2% | — |
| FrontierMath Tier 4 | 95% | — |
| OTIS Mock AIME 2024-2025 | 100% | — |
| ProofBench | 100% | — |
| LMArena Math | 1506 | — |
| FrontierMath Erdős | 2.9% | — |
Knowledge Not comparable
Claude Opus 5.5: 66.4 (#10), Granite 4.1 30B: —
| Benchmark | Claude Opus 5.5 | Granite 4.1 30B |
|---|---|---|
| GPQA Diamond | 90.6% | — |
| SimpleQA Verified | 72.2% | — |
| LMArena Expert | 1547 | — |
Multimodal Not comparable
Claude Opus 5.5: 57.8 (#1), Granite 4.1 30B: —
| Benchmark | Claude Opus 5.5 | Granite 4.1 30B |
|---|---|---|
| LMArena Vision | 1321 | — |
| Blueprint-Bench 2 | 51.2% | — |
| Furniture Assembly | 83.3% | — |
Multilingual Not comparable
Claude Opus 5.5: 59.1 (#2), Granite 4.1 30B: —
| Benchmark | Claude Opus 5.5 | Granite 4.1 30B |
|---|---|---|
| LMArena Non-English | 1507 | — |
| LMArena Chinese | 1588 | — |
| LMArena French | 1514 | — |
| LMArena Russian | 1520 | — |
| LMArena Spanish | 1507 | — |
Instruction Following Not comparable
Claude Opus 5.5: 80.0 (#3), Granite 4.1 30B: —
| Benchmark | Claude Opus 5.5 | Granite 4.1 30B |
|---|---|---|
| LMArena Instruction Following | 1537 | — |
Long Context Not comparable
Claude Opus 5.5: 47.1 (#19), Granite 4.1 30B: —
| Benchmark | Claude Opus 5.5 | Granite 4.1 30B |
|---|---|---|
| LMArena Longer Query | 1532 | — |
Writing & Preference Not comparable
Claude Opus 5.5: 78.2 (#3), Granite 4.1 30B: —
| Benchmark | Claude Opus 5.5 | Granite 4.1 30B |
|---|---|---|
| LMArena Text | 1515 | — |
| LMArena Creative Writing | 1533 | — |
| EQ-Bench Creative Writing | 2050 | — |
| LMArena Multi-Turn | 1499 | — |
Frequently asked questions
Is Claude Opus 5.5 better than Granite 4.1 30B?
Claude Opus 5.5 has enough public results to be ranked (#3); Granite 4.1 30B does not yet, so treat this comparison as directional.
Is Claude Opus 5.5 or Granite 4.1 30B better for coding?
Claude Opus 5.5 scores higher on coding benchmarks: 71.9 versus 35.2 in the Noometry coding category.
How many benchmarks do Claude Opus 5.5 and Granite 4.1 30B share?
2 benchmarks have published results for both models. Claude Opus 5.5 has 44 scored results on Noometry and Granite 4.1 30B has 2.