# Claude Opus 4.1 vs phi-3-medium 14B

> Claude Opus 4.1 is the stronger model overall, scoring 40.8 to 29.1 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-opus-4-1-vs-phi-3-medium-14b
- Last updated: 2026-10-10
- Shared benchmarks: 2

## Summary

- They share 2 benchmarks with published results for both. Claude Opus 4.1 scores higher in 2 categories and phi-3-medium 14B in 1 category; 3 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Claude Opus 4.1 leads 41.9 to 9.1.
- The biggest single-benchmark swing is GPQA Diamond: 77.3% for Claude Opus 4.1 and 27.6% for phi-3-medium 14B.
- phi-3-medium 14B has downloadable open weights; the other is API-only.

## Snapshot

| | Claude Opus 4.1 | phi-3-medium 14B |
|---|---|---|
| Provider | Anthropic | Microsoft |
| Noometry Index | 40.8 | 29.1 |
| Rank | 136 | 306 |
| Context | 200K | — |
| Input $/M | $15 | — |
| Output $/M | $75 | — |
| Weights | Proprietary | Open |

## Coding

- Claude Opus 4.1: 44.3 (#69)
- phi-3-medium 14B: 36.3 (#198)

| Benchmark | Claude Opus 4.1 | phi-3-medium 14B |
|---|---|---|
| SWE-bench Verified | 73.3% | — |
| LMArena WebDev | 1390 | — |
| WeirdML | 45.9% | — |
| BigCodeBench Instruct | — | 37.6% |
| LMArena Coding | 1479 | — |
| BigCodeBench Complete | — | 48.7% |
| ALE-Bench | 674.77 | — |
| AlgoTune | 1.34 | — |

## Agentic & Tool Use

- Claude Opus 4.1: 34.8 (#38)
- phi-3-medium 14B: —

| Benchmark | Claude Opus 4.1 | phi-3-medium 14B |
|---|---|---|
| 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: 31.6 (#70)
- phi-3-medium 14B: —

| Benchmark | Claude Opus 4.1 | phi-3-medium 14B |
|---|---|---|
| Epoch Capabilities Index | 144.11 | 121.18 |
| SimpleBench | 60% | — |
| Chess Puzzles | 7% | — |
| EnigmaEval | 7.2% | — |
| EBR-Bench | 7.9% | — |
| LMArena Hard Prompts | 1443 | — |
| Mystery Game Puzzles | 21% | — |
| DTBench | 80% | — |
| LMCA | 37.1% | — |
| Adversarial NLI | — | 55.8% |
| BIG-Bench Hard | — | 81.4% |
| ForecastBench | 62 | — |
| HellaSwag | — | 82.4% |
| WinoGrande | — | 81.5% |

## Math

- Claude Opus 4.1: 22.0 (#267)
- phi-3-medium 14B: 25.2 (#249)

| Benchmark | Claude Opus 4.1 | phi-3-medium 14B |
|---|---|---|
| FrontierMath (Tiers 1-3) | 12.6% | — |
| FrontierMath Tier 4 | 2.4% | — |
| OTIS Mock AIME 2024-2025 | 68.9% | — |
| LMArena Math | 1430 | — |
| MATH Level 5 | — | 17.6% |
| FrontierMath (Feb 2025 set) | 7.2% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |

## Knowledge

- Claude Opus 4.1: 41.9 (#93)
- phi-3-medium 14B: 9.1 (#301)

| Benchmark | Claude Opus 4.1 | phi-3-medium 14B |
|---|---|---|
| GPQA Diamond | 77.3% | 27.6% |
| Humanity's Last Exam | 11.5% | — |
| Confabulations | 17.1% | — |
| Vectara Hallucination Rate | 11.8% | — |
| LMArena Expert | 1439 | — |
| ARC (AI2) Challenge | — | 91.6% |
| MMLU | — | 78% |
| OpenBookQA | — | 87.4% |
| TriviaQA | — | 73.9% |

## Multimodal

- Claude Opus 4.1: 26.2 (#114)
- phi-3-medium 14B: —

| Benchmark | Claude Opus 4.1 | phi-3-medium 14B |
|---|---|---|
| VPCT | 35% | — |

## Multilingual

- Claude Opus 4.1: 52.1 (#90)
- phi-3-medium 14B: —

| Benchmark | Claude Opus 4.1 | phi-3-medium 14B |
|---|---|---|
| LMArena Non-English | 1405 | — |
| LMArena Chinese | 1427 | — |
| LMArena French | 1432 | — |
| LMArena German | 1412 | — |
| LMArena Japanese | 1378 | — |
| LMArena Korean | 1381 | — |
| LMArena Russian | 1421 | — |
| LMArena Spanish | 1448 | — |

## Instruction Following

- Claude Opus 4.1: 75.8 (#53)
- phi-3-medium 14B: —

| Benchmark | Claude Opus 4.1 | phi-3-medium 14B |
|---|---|---|
| LMArena Instruction Following | 1436 | — |

## Long Context

- Claude Opus 4.1: 44.5 (#60)
- phi-3-medium 14B: —

| Benchmark | Claude Opus 4.1 | phi-3-medium 14B |
|---|---|---|
| LMArena Longer Query | 1455 | — |

## Writing & Preference

- Claude Opus 4.1: 62.6 (#70)
- phi-3-medium 14B: —

| Benchmark | Claude Opus 4.1 | phi-3-medium 14B |
|---|---|---|
| LMArena Text | 1419 | — |
| LMArena Creative Writing | 1412 | — |
| Short-Story Creative Writing | 84.7% | — |
| LMArena Multi-Turn | 1444 | — |

## FAQ

### Is Claude Opus 4.1 better than phi-3-medium 14B?

Claude Opus 4.1 is the stronger model overall, scoring 40.8 to 29.1 on the Noometry Index.

### Is Claude Opus 4.1 or phi-3-medium 14B better for coding?

Claude Opus 4.1 scores higher on coding benchmarks: 44.3 versus 36.3 in the Noometry coding category.

### How many benchmarks do Claude Opus 4.1 and phi-3-medium 14B share?

2 benchmarks have published results for both models. Claude Opus 4.1 has 48 scored results on Noometry and phi-3-medium 14B has 13.