# Claude Opus 4.1 vs Phi 3 Mini 4k Instruct

> Claude Opus 4.1 is the stronger model overall, scoring 41.0 to 27.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-opus-4-1-vs-phi-3-mini-4k-instruct
- Last updated: 2026-10-11
- Shared benchmarks: 18

## Summary

- They share 18 benchmarks with published results for both. Claude Opus 4.1 scores higher in 7 categories and Phi 3 Mini 4k Instruct in 1 category; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Claude Opus 4.1 leads 62.4 to 27.6.
- The biggest single-benchmark swing is Chess Puzzles: 7% for Claude Opus 4.1 and 0% for Phi 3 Mini 4k Instruct.
- Phi 3 Mini 4k Instruct has downloadable open weights; the other is API-only.

## Snapshot

| | Claude Opus 4.1 | Phi 3 Mini 4k Instruct |
|---|---|---|
| Provider | Anthropic | Microsoft |
| Noometry Index | 41.0 | 27.9 |
| Rank | 142 | 328 |
| Context | 200K | — |
| Input $/M | $15 | — |
| Output $/M | $75 | — |
| Weights | Proprietary | Open |

## Coding

- Claude Opus 4.1: 44.4 (#73)
- Phi 3 Mini 4k Instruct: 26.6 (#323)

| Benchmark | Claude Opus 4.1 | Phi 3 Mini 4k Instruct |
|---|---|---|
| LMArena Coding | 1479 | 1093 |
| SWE-bench Verified | 73.3% | — |
| LMArena WebDev | 1390 | — |
| WeirdML | 45.9% | — |
| LiveBench Coding | — | 15.5% |
| ALE-Bench | 674.77 | — |
| AlgoTune | 1.34 | — |
| HumanEval+ | — | 59.1% |
| MBPP+ | — | 54.2% |

## Agentic & Tool Use

- Claude Opus 4.1: 35.0 (#41)
- Phi 3 Mini 4k Instruct: —

| Benchmark | Claude Opus 4.1 | Phi 3 Mini 4k Instruct |
|---|---|---|
| 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)
- Phi 3 Mini 4k Instruct: 14.1 (#328)

| Benchmark | Claude Opus 4.1 | Phi 3 Mini 4k Instruct |
|---|---|---|
| Chess Puzzles | 7% | 0% |
| LMArena Hard Prompts | 1443 | 1072 |
| SimpleBench | 60% | — |
| EnigmaEval | 7.2% | — |
| EBR-Bench | 7.9% | — |
| LiveBench Reasoning | — | 26.8% |
| Mystery Game Puzzles | 21% | — |
| DTBench | 80% | — |
| LiveBench Data Analysis | — | 34.7% |
| LMCA | 37.1% | — |
| Adversarial NLI | — | 52.8% |
| BIG-Bench Hard | — | 71.7% |
| Epoch Capabilities Index | 144.12 | — |
| ForecastBench | 62 | — |
| HellaSwag | — | 76.7% |
| LiveBench | — | 22.4% |
| WinoGrande | — | 70.8% |

## Math

- Claude Opus 4.1: 22.3 (#277)
- Phi 3 Mini 4k Instruct: 26.6 (#257)

| Benchmark | Claude Opus 4.1 | Phi 3 Mini 4k Instruct |
|---|---|---|
| LMArena Math | 1431 | 1111 |
| FrontierMath (Tiers 1-3) | 12.6% | — |
| FrontierMath Tier 4 | 2.4% | — |
| OTIS Mock AIME 2024-2025 | 68.9% | — |
| LiveBench Math | — | 15.7% |
| FrontierMath (Feb 2025 set) | 7.2% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |

## Knowledge

- Claude Opus 4.1: 42.0 (#101)
- Phi 3 Mini 4k Instruct: 28.5 (#246)

| Benchmark | Claude Opus 4.1 | Phi 3 Mini 4k Instruct |
|---|---|---|
| LMArena Expert | 1439 | 1045 |
| GPQA Diamond | 77.3% | — |
| Humanity's Last Exam | 11.5% | — |
| Confabulations | 17.1% | — |
| Vectara Hallucination Rate | 11.8% | — |
| ARC (AI2) Challenge | — | 84.9% |
| MMLU | — | 68.8% |
| OpenBookQA | — | 88% |
| TriviaQA | — | 64% |

## Multimodal

- Claude Opus 4.1: 26.8 (#119)
- Phi 3 Mini 4k Instruct: —

| Benchmark | Claude Opus 4.1 | Phi 3 Mini 4k Instruct |
|---|---|---|
| VPCT | 35% | — |

## Multilingual

- Claude Opus 4.1: 52.0 (#95)
- Phi 3 Mini 4k Instruct: 26.3 (#280)

| Benchmark | Claude Opus 4.1 | Phi 3 Mini 4k Instruct |
|---|---|---|
| LMArena Non-English | 1405 | 1021 |
| LMArena Chinese | 1427 | 1021 |
| LMArena French | 1431 | 1076 |
| LMArena German | 1413 | 1044 |
| LMArena Japanese | 1378 | 935 |
| LMArena Korean | 1380 | 905 |
| LMArena Russian | 1422 | 1022 |
| LMArena Spanish | 1448 | 1085 |

## Instruction Following

- Claude Opus 4.1: 75.6 (#58)
- Phi 3 Mini 4k Instruct: 47.7 (#303)

| Benchmark | Claude Opus 4.1 | Phi 3 Mini 4k Instruct |
|---|---|---|
| LMArena Instruction Following | 1435 | 1053 |
| LiveBench Instruction Following | — | 39.1% |

## Long Context

- Claude Opus 4.1: 44.5 (#63)
- Phi 3 Mini 4k Instruct: 31.7 (#276)

| Benchmark | Claude Opus 4.1 | Phi 3 Mini 4k Instruct |
|---|---|---|
| LMArena Longer Query | 1455 | 1044 |

## Writing & Preference

- Claude Opus 4.1: 62.4 (#74)
- Phi 3 Mini 4k Instruct: 27.6 (#300)

| Benchmark | Claude Opus 4.1 | Phi 3 Mini 4k Instruct |
|---|---|---|
| LMArena Text | 1419 | 1073 |
| LMArena Creative Writing | 1412 | 1037 |
| LMArena Multi-Turn | 1444 | 1018 |
| Short-Story Creative Writing | 84.7% | — |
| LiveBench Language | — | 9.2% |

## FAQ

### Is Claude Opus 4.1 better than Phi 3 Mini 4k Instruct?

Claude Opus 4.1 is the stronger model overall, scoring 41.0 to 27.9 on the Noometry Index.

### Is Claude Opus 4.1 or Phi 3 Mini 4k Instruct better for coding?

Claude Opus 4.1 scores higher on coding benchmarks: 44.4 versus 26.6 in the Noometry coding category.

### How many benchmarks do Claude Opus 4.1 and Phi 3 Mini 4k Instruct share?

18 benchmarks have published results for both models. Claude Opus 4.1 has 48 scored results on Noometry and Phi 3 Mini 4k Instruct has 35.