# Llama 3-70B vs o3-mini

> o3-mini is the stronger model overall, scoring 36.7 to 28.5 on the Noometry Index.

- Canonical page: https://noometry.com/compare/llama-3-70b-vs-o3-mini
- Last updated: 2026-10-10
- Shared benchmarks: 24

## Summary

- They share 24 benchmarks with published results for both. Llama 3-70B scores higher in 2 categories and o3-mini in 7 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where o3-mini leads 38.3 to 20.8.
- The biggest single-benchmark swing is MATH Level 5: 22.6% for Llama 3-70B and 96.5% for o3-mini.
- Llama 3-70B has downloadable open weights; the other is API-only.

## Snapshot

| | Llama 3-70B | o3-mini |
|---|---|---|
| Provider | Meta | OpenAI |
| Noometry Index | 28.5 | 36.7 |
| Rank | 317 | 205 |
| Context | — | 200K |
| Input $/M | — | $1.10 |
| Output $/M | — | $4.40 |
| Weights | Open | Proprietary |

## Coding

- Llama 3-70B: 35.3 (#215)
- o3-mini: 41.4 (#116)

| Benchmark | Llama 3-70B | o3-mini |
|---|---|---|
| LMArena Coding | 1206 | 1378 |
| Aider Polyglot | — | 60.4% |
| SciCode | — | 39.8% |
| GSO | — | 1.3% |
| WeirdML | — | 43.7% |
| BigCodeBench Instruct | 43.6% | — |
| LiveBench Coding | — | 82.7% |
| BigCodeBench Complete | 54.5% | — |
| CadEval | — | 54% |
| HumanEval+ | 72% | — |
| MBPP+ | 69% | — |

## Agentic & Tool Use

- Llama 3-70B: 20.9 (#132)
- o3-mini: 29.3 (#79)

| Benchmark | Llama 3-70B | o3-mini |
|---|---|---|
| Cybench | 5% | 22.5% |

## Reasoning

- Llama 3-70B: 17.4 (#284)
- o3-mini: 16.3 (#295)

| Benchmark | Llama 3-70B | o3-mini |
|---|---|---|
| LMArena Hard Prompts | 1195 | 1366 |
| DTBench | 54.2% | 68.8% |
| Epoch Capabilities Index | 122.91 | 140.35 |
| ForecastBench | 57.1 | 59.6 |
| ARC-AGI-2 | — | 3% |
| SimpleBench | — | 22.8% |
| Kagi LLM Benchmark | 35.1% | — |
| ARC-AGI-1 | — | 34.5% |
| CritPt | — | 0.3% |
| Chess Puzzles | — | 17% |
| LiveBench Reasoning | — | 89.6% |
| Mystery Game Puzzles | — | 7% |
| LiveBench Data Analysis | — | 70.6% |
| LMCA | — | 19% |
| LiveBench | — | 75.9% |
| WinoGrande | 83.5% | — |

## Math

- Llama 3-70B: 12.0 (#299)
- o3-mini: 27.6 (#236)

| Benchmark | Llama 3-70B | o3-mini |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 4.3% | 76.9% |
| LMArena Math | 1218 | 1396 |
| MATH Level 5 | 22.6% | 96.5% |
| FrontierMath (Tiers 1-3) | — | 18.6% |
| FrontierMath Tier 4 | — | 0% |
| LiveBench Math | — | 77.3% |
| FrontierMath (Feb 2025 set) | — | 12.4% |
| FrontierMath Tier 4 (v1) | — | 4.2% |

## Knowledge

- Llama 3-70B: 20.8 (#272)
- o3-mini: 38.3 (#135)

| Benchmark | Llama 3-70B | o3-mini |
|---|---|---|
| GPQA Diamond | 40.6% | 77% |
| LMArena Expert | 1149 | 1364 |
| SimpleQA Verified | — | 15.3% |
| Confabulations | — | 17.9% |
| MMLU | 79.3% | — |

## Multilingual

- Llama 3-70B: 33.8 (#246)
- o3-mini: 45.9 (#159)

| Benchmark | Llama 3-70B | o3-mini |
|---|---|---|
| LMArena Non-English | 1142 | 1319 |
| LMArena Chinese | 1114 | 1379 |
| LMArena French | 1231 | 1333 |
| LMArena German | 1169 | 1303 |
| LMArena Japanese | 1017 | 1286 |
| LMArena Korean | 1017 | 1314 |
| LMArena Russian | 1159 | 1304 |
| LMArena Spanish | 1241 | 1321 |

## Instruction Following

- Llama 3-70B: 62.8 (#233)
- o3-mini: 75.3 (#67)

| Benchmark | Llama 3-70B | o3-mini |
|---|---|---|
| LMArena Instruction Following | 1194 | 1338 |
| LiveBench Instruction Following | — | 84.4% |

## Long Context

- Llama 3-70B: 35.6 (#235)
- o3-mini: 33.8 (#251)

| Benchmark | Llama 3-70B | o3-mini |
|---|---|---|
| LMArena Longer Query | 1174 | 1343 |
| Fiction.LiveBench | — | 50% |

## Writing & Preference

- Llama 3-70B: 43.0 (#225)
- o3-mini: 50.4 (#177)

| Benchmark | Llama 3-70B | o3-mini |
|---|---|---|
| LMArena Text | 1221 | 1337 |
| LMArena Creative Writing | 1210 | 1286 |
| LMArena Multi-Turn | 1223 | 1320 |
| Short-Story Creative Writing | — | 61.7% |
| LiveBench Language | — | 50.7% |

## FAQ

### Is Llama 3-70B better than o3-mini?

o3-mini is the stronger model overall, scoring 36.7 to 28.5 on the Noometry Index.

### Is Llama 3-70B or o3-mini better for coding?

o3-mini scores higher on coding benchmarks: 41.4 versus 35.3 in the Noometry coding category.

### How many benchmarks do Llama 3-70B and o3-mini share?

24 benchmarks have published results for both models. Llama 3-70B has 31 scored results on Noometry and o3-mini has 51.