# Llama 3.1-70B vs Phi 3 Mini 128k Instruct

> Llama 3.1-70B and Phi 3 Mini 128k Instruct score almost the same on the Noometry Index (29.6 vs 29.7), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/llama-3-1-70b-vs-phi-3-mini-128k-instruct
- Last updated: 2026-10-10
- Shared benchmarks: 19

## Summary

- They share 19 benchmarks with published results for both. Llama 3.1-70B scores higher in 6 categories and Phi 3 Mini 128k Instruct in 2 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Phi 3 Mini 128k Instruct leads 31.6 to 13.5.
- The biggest single-benchmark swing is BigCodeBench Instruct: 46.1% for Llama 3.1-70B and 29.6% for Phi 3 Mini 128k Instruct.

## Snapshot

| | Llama 3.1-70B | Phi 3 Mini 128k Instruct |
|---|---|---|
| Provider | Meta | Microsoft |
| Noometry Index | 29.6 | 29.7 |
| Rank | 308 | 305 |
| Context | 128K | — |
| Input $/M | $0.40 | — |
| Output $/M | $0.40 | — |
| Weights | Open | Open |

## Coding

- Llama 3.1-70B: 30.3 (#296)
- Phi 3 Mini 128k Instruct: 28.8 (#312)

| Benchmark | Llama 3.1-70B | Phi 3 Mini 128k Instruct |
|---|---|---|
| BigCodeBench Instruct | 46.1% | 29.6% |
| LMArena Coding | 1260 | 1039 |
| BigCodeBench Complete | 54.8% | 40.6% |
| WeirdML | 9% | — |

## Agentic & Tool Use

- Llama 3.1-70B: 25.1 (#112)
- Phi 3 Mini 128k Instruct: —

| Benchmark | Llama 3.1-70B | Phi 3 Mini 128k Instruct |
|---|---|---|
| TheAgentCompany | 6.9% | — |
| BALROG | 27.9% | — |

## Reasoning

- Llama 3.1-70B: 21.6 (#220)
- Phi 3 Mini 128k Instruct: 19.6 (#256)

| Benchmark | Llama 3.1-70B | Phi 3 Mini 128k Instruct |
|---|---|---|
| LMArena Hard Prompts | 1241 | 1028 |
| DTBench | 60% | — |
| LMCA | 14.8% | — |
| Epoch Capabilities Index | 125.92 | — |

## Math

- Llama 3.1-70B: 13.5 (#304)
- Phi 3 Mini 128k Instruct: 31.6 (#222)

| Benchmark | Llama 3.1-70B | Phi 3 Mini 128k Instruct |
|---|---|---|
| LMArena Math | 1252 | 1089 |
| OTIS Mock AIME 2024-2025 | 3.6% | — |
| Omni-MATH | 21% | — |
| MATH Level 5 | 36.7% | — |

## Knowledge

- Llama 3.1-70B: 24.2 (#269)
- Phi 3 Mini 128k Instruct: 26.8 (#254)

| Benchmark | Llama 3.1-70B | Phi 3 Mini 128k Instruct |
|---|---|---|
| LMArena Expert | 1209 | 984 |
| GPQA Diamond | 44.2% | — |
| MMLU-Pro | 65.3% | — |
| GPQA (HELM) | 42.6% | — |
| MMLU | 80.1% | — |

## Multilingual

- Llama 3.1-70B: 38.8 (#225)
- Phi 3 Mini 128k Instruct: 25.2 (#285)

| Benchmark | Llama 3.1-70B | Phi 3 Mini 128k Instruct |
|---|---|---|
| LMArena Non-English | 1219 | 1000 |
| LMArena Chinese | 1215 | 1016 |
| LMArena French | 1261 | 1039 |
| LMArena German | 1222 | 1006 |
| LMArena Japanese | 1132 | 899 |
| LMArena Korean | 1140 | 856 |
| LMArena Russian | 1234 | 1004 |
| LMArena Spanish | 1253 | 1059 |

## Instruction Following

- Llama 3.1-70B: 65.3 (#223)
- Phi 3 Mini 128k Instruct: 51.8 (#294)

| Benchmark | Llama 3.1-70B | Phi 3 Mini 128k Instruct |
|---|---|---|
| LMArena Instruction Following | 1231 | 1023 |
| IFEval | 82.1% | — |

## Long Context

- Llama 3.1-70B: 37.6 (#214)
- Phi 3 Mini 128k Instruct: 30.4 (#289)

| Benchmark | Llama 3.1-70B | Phi 3 Mini 128k Instruct |
|---|---|---|
| LMArena Longer Query | 1241 | 996 |

## Writing & Preference

- Llama 3.1-70B: 35.4 (#267)
- Phi 3 Mini 128k Instruct: 27.1 (#301)

| Benchmark | Llama 3.1-70B | Phi 3 Mini 128k Instruct |
|---|---|---|
| LMArena Text | 1261 | 1050 |
| LMArena Creative Writing | 1232 | 1024 |
| LMArena Multi-Turn | 1256 | 989 |
| EQ-Bench Creative Writing | 784 | — |
| WildBench | 75.8% | — |

## FAQ

### Is Llama 3.1-70B better than Phi 3 Mini 128k Instruct?

Llama 3.1-70B and Phi 3 Mini 128k Instruct score almost the same on the Noometry Index (29.6 vs 29.7), so choose on price, context window or the category you care about most.

### Is Llama 3.1-70B or Phi 3 Mini 128k Instruct better for coding?

Llama 3.1-70B scores higher on coding benchmarks: 30.3 versus 28.8 in the Noometry coding category.

### How many benchmarks do Llama 3.1-70B and Phi 3 Mini 128k Instruct share?

19 benchmarks have published results for both models. Llama 3.1-70B has 35 scored results on Noometry and Phi 3 Mini 128k Instruct has 19.