# Llama 13b vs o3-pro

> o3-pro is the stronger model overall, scoring 42.9 to 24.4 on the Noometry Index.

- Canonical page: https://noometry.com/compare/llama-13b-vs-o3-pro
- Last updated: 2026-10-11
- Shared benchmarks: 1

## Summary

- They share 1 benchmark with published results for both. Llama 13b scores higher in 0 categories and o3-pro in 3 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where o3-pro leads 57.1 to 13.8.
- Llama 13b has downloadable open weights; the other is API-only.

## Snapshot

| | Llama 13b | o3-pro |
|---|---|---|
| Provider | Meta | OpenAI |
| Noometry Index | 24.4 | 42.9 |
| Rank | 348 | 105 |
| Context | — | 200K |
| Input $/M | — | $20 |
| Output $/M | — | $80 |
| Weights | Open | Proprietary |

## Coding

- Llama 13b: 21.4 (#337)
- o3-pro: 55.5 (#24)

| Benchmark | Llama 13b | o3-pro |
|---|---|---|
| Aider Polyglot | — | 84.9% |
| WeirdML | — | 58.2% |
| LMArena Coding | 683 | — |

## Reasoning

- Llama 13b: 14.0 (#329)
- o3-pro: 23.8 (#171)

| Benchmark | Llama 13b | o3-pro |
|---|---|---|
| Epoch Capabilities Index | 100.58 | 147.42 |
| ARC-AGI-2 | — | 4.9% |
| Kagi LLM Benchmark | — | 72.1% |
| ARC-AGI-1 | — | 59.3% |
| LMArena Hard Prompts | 728 | — |
| DTBench | — | 86.9% |
| LMCA | — | 38.5% |
| BIG-Bench Hard | 37.9% | — |
| HellaSwag | 79.2% | — |
| LAMBADA | 75.2% | — |
| PIQA | 80.1% | — |
| WinoGrande | 73% | — |

## Math

- Llama 13b: 26.7 (#256)
- o3-pro: —

| Benchmark | Llama 13b | o3-pro |
|---|---|---|
| LMArena Math | 838 | — |
| GSM8K | 20.6% | — |

## Knowledge

- Llama 13b: —
- o3-pro: 29.5 (#238)

| Benchmark | Llama 13b | o3-pro |
|---|---|---|
| Confabulations | — | 14.2% |
| Vectara Hallucination Rate | — | 23.3% |
| ARC (AI2) Challenge | 52.7% | — |
| BoolQ | 78.7% | — |
| MMLU | 47.7% | — |
| OpenBookQA | 56.4% | — |
| TriviaQA | 77.9% | — |

## Multimodal

- Llama 13b: —
- o3-pro: —

| Benchmark | Llama 13b | o3-pro |
|---|---|---|
| ScienceQA | 43.3% | — |

## Multilingual

- Llama 13b: 16.6 (#297)
- o3-pro: —

| Benchmark | Llama 13b | o3-pro |
|---|---|---|
| LMArena Non-English | 819 | — |

## Instruction Following

- Llama 13b: 36.7 (#305)
- o3-pro: —

| Benchmark | Llama 13b | o3-pro |
|---|---|---|
| LMArena Instruction Following | 781 | — |

## Long Context

- Llama 13b: —
- o3-pro: 72.2 (#1)

| Benchmark | Llama 13b | o3-pro |
|---|---|---|
| Fiction.LiveBench | — | 97.2% |

## Writing & Preference

- Llama 13b: 13.8 (#312)
- o3-pro: 57.1 (#133)

| Benchmark | Llama 13b | o3-pro |
|---|---|---|
| LMArena Text | 834 | — |
| LMArena Creative Writing | 794 | — |
| Short-Story Creative Writing | — | 84.4% |
| LMArena Multi-Turn | 753 | — |

## FAQ

### Is Llama 13b better than o3-pro?

o3-pro is the stronger model overall, scoring 42.9 to 24.4 on the Noometry Index.

### Is Llama 13b or o3-pro better for coding?

o3-pro scores higher on coding benchmarks: 55.5 versus 21.4 in the Noometry coding category.

### How many benchmarks do Llama 13b and o3-pro share?

1 benchmark has published results for both models. Llama 13b has 21 scored results on Noometry and o3-pro has 12.