# Claude Opus 4.1 vs Granite 4.2 3b

> Claude Opus 4.1 is the stronger model overall, scoring 41.0 to 39.4 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-opus-4-1-vs-granite-4-2-3b
- Last updated: 2026-10-12
- Shared benchmarks: 11

## Summary

- They share 11 benchmarks with published results for both. Claude Opus 4.1 scores higher in 7 categories and Granite 4.2 3b in 0 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Claude Opus 4.1 leads 62.4 to 47.2.
- Granite 4.2 3b has downloadable open weights; the other is API-only.

## Snapshot

| | Claude Opus 4.1 | Granite 4.2 3b |
|---|---|---|
| Provider | Anthropic | IBM |
| Noometry Index | 41.0 | 39.4 |
| Rank | 142 | 169 |
| Context | 200K | — |
| Input $/M | $15 | — |
| Output $/M | $75 | — |
| Weights | Proprietary | Open |

## Coding

- Claude Opus 4.1: 44.4 (#73)
- Granite 4.2 3b: 40.0 (#151)

| Benchmark | Claude Opus 4.1 | Granite 4.2 3b |
|---|---|---|
| LMArena Coding | 1479 | 1361 |
| SWE-bench Verified | 73.3% | — |
| LMArena WebDev | 1390 | — |
| WeirdML | 45.9% | — |
| ALE-Bench | 674.77 | — |
| AlgoTune | 1.34 | — |

## Agentic & Tool Use

- Claude Opus 4.1: 35.0 (#41)
- Granite 4.2 3b: —

| Benchmark | Claude Opus 4.1 | Granite 4.2 3b |
|---|---|---|
| Terminal-Bench | 38% | — |
| GDPval | 43.6% | — |
| Cybench | 42% | — |
| DeepResearch Bench | 48.3% | — |
| LMArena Search | 1148 | — |
| METR Time Horizons | 66.8% | — |

## Reasoning

- Claude Opus 4.1: 32.2 (#76)
- Granite 4.2 3b: 26.0 (#138)

| Benchmark | Claude Opus 4.1 | Granite 4.2 3b |
|---|---|---|
| LMArena Hard Prompts | 1443 | 1306 |
| SimpleBench | 60% | — |
| Chess Puzzles | 7% | — |
| EnigmaEval | 7.2% | — |
| EBR-Bench | 7.9% | — |
| Mystery Game Puzzles | 21% | — |
| DTBench | 80% | — |
| LMCA | 37.1% | — |
| Epoch Capabilities Index | 144.12 | — |
| ForecastBench | 62 | — |

## Math

- Claude Opus 4.1: 22.3 (#277)
- Granite 4.2 3b: —

| Benchmark | Claude Opus 4.1 | Granite 4.2 3b |
|---|---|---|
| FrontierMath (Tiers 1-3) | 12.6% | — |
| FrontierMath Tier 4 | 2.4% | — |
| OTIS Mock AIME 2024-2025 | 68.9% | — |
| LMArena Math | 1431 | — |
| FrontierMath (Feb 2025 set) | 7.2% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |

## Knowledge

- Claude Opus 4.1: 42.0 (#101)
- Granite 4.2 3b: 36.3 (#171)

| Benchmark | Claude Opus 4.1 | Granite 4.2 3b |
|---|---|---|
| LMArena Expert | 1439 | 1315 |
| GPQA Diamond | 77.3% | — |
| Humanity's Last Exam | 11.5% | — |
| Confabulations | 17.1% | — |
| Vectara Hallucination Rate | 11.8% | — |

## Multimodal

- Claude Opus 4.1: 26.8 (#119)
- Granite 4.2 3b: —

| Benchmark | Claude Opus 4.1 | Granite 4.2 3b |
|---|---|---|
| VPCT | 35% | — |

## Multilingual

- Claude Opus 4.1: 52.0 (#95)
- Granite 4.2 3b: 42.1 (#198)

| Benchmark | Claude Opus 4.1 | Granite 4.2 3b |
|---|---|---|
| LMArena Non-English | 1405 | 1268 |
| LMArena Chinese | 1427 | 1269 |
| LMArena Russian | 1422 | 1249 |
| LMArena French | 1431 | — |
| LMArena German | 1413 | — |
| LMArena Japanese | 1378 | — |
| LMArena Korean | 1380 | — |
| LMArena Spanish | 1448 | — |

## Instruction Following

- Claude Opus 4.1: 75.6 (#58)
- Granite 4.2 3b: 67.1 (#200)

| Benchmark | Claude Opus 4.1 | Granite 4.2 3b |
|---|---|---|
| LMArena Instruction Following | 1435 | 1273 |

## Long Context

- Claude Opus 4.1: 44.5 (#63)
- Granite 4.2 3b: 39.2 (#185)

| Benchmark | Claude Opus 4.1 | Granite 4.2 3b |
|---|---|---|
| LMArena Longer Query | 1455 | 1291 |

## Writing & Preference

- Claude Opus 4.1: 62.4 (#74)
- Granite 4.2 3b: 47.2 (#212)

| Benchmark | Claude Opus 4.1 | Granite 4.2 3b |
|---|---|---|
| LMArena Text | 1419 | 1293 |
| LMArena Creative Writing | 1412 | 1205 |
| LMArena Multi-Turn | 1444 | 1290 |
| Short-Story Creative Writing | 84.7% | — |

## FAQ

### Is Claude Opus 4.1 better than Granite 4.2 3b?

Claude Opus 4.1 is the stronger model overall, scoring 41.0 to 39.4 on the Noometry Index.

### Is Claude Opus 4.1 or Granite 4.2 3b better for coding?

Claude Opus 4.1 scores higher on coding benchmarks: 44.4 versus 40.0 in the Noometry coding category.

### How many benchmarks do Claude Opus 4.1 and Granite 4.2 3b share?

11 benchmarks have published results for both models. Claude Opus 4.1 has 48 scored results on Noometry and Granite 4.2 3b has 11.