# Llama 3.1-70B vs o3-pro

> o3-pro is the stronger model overall, scoring 42.7 to 29.4 on the Noometry Index. Llama 3.1-70B costs 88× less per token, which makes it the better buy when o3-pro's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/llama-3-1-70b-vs-o3-pro
- Last updated: 2026-10-10
- Shared benchmarks: 4

## Summary

- They share 4 benchmarks with published results for both. Llama 3.1-70B scores higher in 0 categories and o3-pro in 5 categories; 5 gaps are clear of the uncertainty.
- The widest gap is in long context, where o3-pro leads 72.1 to 37.6.
- The biggest single-benchmark swing is WeirdML: 9% for Llama 3.1-70B and 58.2% for o3-pro.
- Llama 3.1-70B is cheaper at $0.40 / $0.40 per million input/output tokens, against $20 / $80 for o3-pro.
- o3-pro accepts more context: 200K tokens versus 128K.
- Llama 3.1-70B has downloadable open weights; the other is API-only.

## Snapshot

| | Llama 3.1-70B | o3-pro |
|---|---|---|
| Provider | Meta | OpenAI |
| Noometry Index | 29.4 | 42.7 |
| Rank | 299 | 94 |
| Context | 128K | 200K |
| Input $/M | $0.40 | $20 |
| Output $/M | $0.40 | $80 |
| Weights | Open | Proprietary |

## Coding

- Llama 3.1-70B: 29.8 (#292)
- o3-pro: 55.1 (#22)

| Benchmark | Llama 3.1-70B | o3-pro |
|---|---|---|
| WeirdML | 9% | 58.2% |
| Aider Polyglot | — | 84.9% |
| BigCodeBench Instruct | 46.1% | — |
| LMArena Coding | 1260 | — |
| BigCodeBench Complete | 54.8% | — |

## Agentic & Tool Use

- Llama 3.1-70B: 24.9 (#104)
- o3-pro: —

| Benchmark | Llama 3.1-70B | o3-pro |
|---|---|---|
| TheAgentCompany | 6.9% | — |
| BALROG | 27.9% | — |

## Reasoning

- Llama 3.1-70B: 20.8 (#215)
- o3-pro: 24.1 (#152)

| Benchmark | Llama 3.1-70B | o3-pro |
|---|---|---|
| DTBench | 60% | 86.9% |
| LMCA | 14.8% | 38.5% |
| Epoch Capabilities Index | 125.91 | 147.43 |
| ARC-AGI-2 | — | 4.9% |
| Kagi LLM Benchmark | — | 72.1% |
| ARC-AGI-1 | — | 59.3% |
| LMArena Hard Prompts | 1241 | — |

## Math

- Llama 3.1-70B: 12.7 (#298)
- o3-pro: —

| Benchmark | Llama 3.1-70B | o3-pro |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 3.6% | — |
| Omni-MATH | 21% | — |
| LMArena Math | 1252 | — |
| MATH Level 5 | 36.7% | — |

## Knowledge

- Llama 3.1-70B: 24.1 (#264)
- o3-pro: 29.0 (#234)

| Benchmark | Llama 3.1-70B | o3-pro |
|---|---|---|
| GPQA Diamond | 44.2% | — |
| MMLU-Pro | 65.3% | — |
| Confabulations | — | 14.2% |
| Vectara Hallucination Rate | — | 23.3% |
| GPQA (HELM) | 42.6% | — |
| LMArena Expert | 1209 | — |
| MMLU | 80.1% | — |

## Multilingual

- Llama 3.1-70B: 38.9 (#220)
- o3-pro: —

| Benchmark | Llama 3.1-70B | o3-pro |
|---|---|---|
| LMArena Non-English | 1219 | — |
| LMArena Chinese | 1215 | — |
| LMArena French | 1260 | — |
| LMArena German | 1222 | — |
| LMArena Japanese | 1132 | — |
| LMArena Korean | 1140 | — |
| LMArena Russian | 1234 | — |
| LMArena Spanish | 1253 | — |

## Instruction Following

- Llama 3.1-70B: 65.5 (#218)
- o3-pro: —

| Benchmark | Llama 3.1-70B | o3-pro |
|---|---|---|
| IFEval | 82.1% | — |
| LMArena Instruction Following | 1231 | — |

## Long Context

- Llama 3.1-70B: 37.6 (#208)
- o3-pro: 72.1 (#1)

| Benchmark | Llama 3.1-70B | o3-pro |
|---|---|---|
| Fiction.LiveBench | — | 97.2% |
| LMArena Longer Query | 1241 | — |

## Writing & Preference

- Llama 3.1-70B: 35.6 (#262)
- o3-pro: 57.1 (#128)

| Benchmark | Llama 3.1-70B | o3-pro |
|---|---|---|
| LMArena Text | 1261 | — |
| LMArena Creative Writing | 1232 | — |
| Short-Story Creative Writing | — | 84.4% |
| EQ-Bench Creative Writing | 784 | — |
| WildBench | 75.8% | — |
| LMArena Multi-Turn | 1256 | — |

## FAQ

### Is Llama 3.1-70B better than o3-pro?

o3-pro is the stronger model overall, scoring 42.7 to 29.4 on the Noometry Index. Llama 3.1-70B costs 88× less per token, which makes it the better buy when o3-pro's lead doesn't matter for your workload.

### Which is cheaper, Llama 3.1-70B or o3-pro?

Llama 3.1-70B is cheaper. It lists at $0.40 per million input tokens and $0.40 per million output tokens; o3-pro lists at $20 and $80.

### Is Llama 3.1-70B or o3-pro better for coding?

o3-pro scores higher on coding benchmarks: 55.1 versus 29.8 in the Noometry coding category.

### Which has the bigger context window?

o3-pro does, with 200K tokens against 128K.

### How many benchmarks do Llama 3.1-70B and o3-pro share?

4 benchmarks have published results for both models. Llama 3.1-70B has 35 scored results on Noometry and o3-pro has 12.