# Grok 4.1 vs Phi 3 Medium 4k Instruct

> Grok 4.1 is the stronger model overall, scoring 40.8 to 32.4 on the Noometry Index.

- Canonical page: https://noometry.com/compare/grok-4-1-vs-phi-3-medium-4k-instruct
- Last updated: 2026-10-10
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. Grok 4.1 scores higher in 8 categories and Phi 3 Medium 4k Instruct in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Grok 4.1 leads 62.6 to 34.3.
- Phi 3 Medium 4k Instruct has downloadable open weights; the other is API-only.

## Snapshot

| | Grok 4.1 | Phi 3 Medium 4k Instruct |
|---|---|---|
| Provider | xAI | Microsoft |
| Noometry Index | 40.8 | 32.4 |
| Rank | 135 | 246 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Proprietary | Open |

## Coding

- Grok 4.1: 33.4 (#246)
- Phi 3 Medium 4k Instruct: 32.3 (#263)

| Benchmark | Grok 4.1 | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Coding | 1445 | 1130 |
| LMArena WebDev | 1214 | — |

## Agentic & Tool Use

- Grok 4.1: 33.8 (#47)
- Phi 3 Medium 4k Instruct: —

| Benchmark | Grok 4.1 | Phi 3 Medium 4k Instruct |
|---|---|---|
| Cybench | 39% | — |

## Reasoning

- Grok 4.1: 28.3 (#91)
- Phi 3 Medium 4k Instruct: 20.8 (#214)

| Benchmark | Grok 4.1 | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Hard Prompts | 1436 | 1127 |

## Math

- Grok 4.1: 36.2 (#124)
- Phi 3 Medium 4k Instruct: 30.9 (#202)

| Benchmark | Grok 4.1 | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Math | 1422 | 1173 |

## Knowledge

- Grok 4.1: 38.9 (#129)
- Phi 3 Medium 4k Instruct: 29.6 (#226)

| Benchmark | Grok 4.1 | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Expert | 1417 | 1108 |

## Multilingual

- Grok 4.1: 53.6 (#64)
- Phi 3 Medium 4k Instruct: 30.8 (#258)

| Benchmark | Grok 4.1 | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Non-English | 1425 | 1094 |
| LMArena Chinese | 1464 | 1108 |
| LMArena French | 1448 | 1109 |
| LMArena German | 1447 | 1101 |
| LMArena Japanese | 1396 | 1042 |
| LMArena Korean | 1407 | 954 |
| LMArena Russian | 1434 | 1145 |
| LMArena Spanish | 1438 | 1095 |

## Instruction Following

- Grok 4.1: 74.0 (#106)
- Phi 3 Medium 4k Instruct: 57.8 (#263)

| Benchmark | Grok 4.1 | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Instruction Following | 1400 | 1114 |

## Long Context

- Grok 4.1: 43.2 (#96)
- Phi 3 Medium 4k Instruct: 33.9 (#250)

| Benchmark | Grok 4.1 | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Longer Query | 1416 | 1120 |

## Writing & Preference

- Grok 4.1: 62.6 (#71)
- Phi 3 Medium 4k Instruct: 34.3 (#267)

| Benchmark | Grok 4.1 | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Text | 1437 | 1138 |
| LMArena Creative Writing | 1411 | 1106 |
| LMArena Multi-Turn | 1438 | 1088 |

## FAQ

### Is Grok 4.1 better than Phi 3 Medium 4k Instruct?

Grok 4.1 is the stronger model overall, scoring 40.8 to 32.4 on the Noometry Index.

### Is Grok 4.1 or Phi 3 Medium 4k Instruct better for coding?

Grok 4.1 scores higher on coding benchmarks: 33.4 versus 32.3 in the Noometry coding category.

### How many benchmarks do Grok 4.1 and Phi 3 Medium 4k Instruct share?

17 benchmarks have published results for both models. Grok 4.1 has 19 scored results on Noometry and Phi 3 Medium 4k Instruct has 17.