# Claude 3 Opus vs Llama 3-8B

> Claude 3 Opus is the stronger model overall, scoring 29.3 to 25.3 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-3-opus-vs-llama-3-8b
- Last updated: 2026-10-10
- Shared benchmarks: 30

## Summary

- They share 30 benchmarks with published results for both. Claude 3 Opus scores higher in 8 categories and Llama 3-8B in 0 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Claude 3 Opus leads 24.5 to 7.8.
- The biggest single-benchmark swing is MATH Level 5: 37.5% for Claude 3 Opus and 6.1% for Llama 3-8B.
- Llama 3-8B has downloadable open weights; the other is API-only.

## Snapshot

| | Claude 3 Opus | Llama 3-8B |
|---|---|---|
| Provider | Anthropic | Meta |
| Noometry Index | 29.3 | 25.3 |
| Rank | 300 | 338 |
| Context | — | 8K |
| Input $/M | — | $0.14 |
| Output $/M | — | $0.14 |
| Weights | Proprietary | Open |

## Coding

- Claude 3 Opus: 32.4 (#261)
- Llama 3-8B: 30.5 (#285)

| Benchmark | Claude 3 Opus | Llama 3-8B |
|---|---|---|
| BigCodeBench Instruct | 45.5% | 31.9% |
| LMArena Coding | 1264 | 1152 |
| BigCodeBench Complete | 57.4% | 36.9% |
| HumanEval+ | 77.4% | 56.7% |
| MBPP+ | 73.3% | 54.8% |
| WeirdML | 19.2% | — |
| LiveBench Coding | 38.6% | — |

## Agentic & Tool Use

- Claude 3 Opus: 24.3 (#110)
- Llama 3-8B: —

| Benchmark | Claude 3 Opus | Llama 3-8B |
|---|---|---|
| Cybench | 10% | — |
| METR Time Horizons | 29.5% | — |

## Reasoning

- Claude 3 Opus: 14.2 (#318)
- Llama 3-8B: 13.8 (#321)

| Benchmark | Claude 3 Opus | Llama 3-8B |
|---|---|---|
| Chess Puzzles | 5% | 0% |
| LMArena Hard Prompts | 1246 | 1133 |
| DTBench | 61.6% | 43.9% |
| Epoch Capabilities Index | 126.91 | 116.33 |
| ForecastBench | 58.4 | 58.6 |
| WinoGrande | 88.5% | 75.7% |
| SimpleBench | 23.5% | — |
| EnigmaEval | 0.8% | — |
| LiveBench Reasoning | 40.6% | — |
| LiveBench Data Analysis | 57.9% | — |
| LMCA | 17% | — |
| Adversarial NLI | — | 57.3% |
| LiveBench | 49.2% | — |

## Math

- Claude 3 Opus: 13.9 (#293)
- Llama 3-8B: 8.3 (#317)

| Benchmark | Claude 3 Opus | Llama 3-8B |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 4.7% | 1.9% |
| LMArena Math | 1273 | 1151 |
| MATH Level 5 | 37.5% | 6.1% |
| LiveBench Math | 43.6% | — |

## Knowledge

- Claude 3 Opus: 24.5 (#262)
- Llama 3-8B: 7.8 (#303)

| Benchmark | Claude 3 Opus | Llama 3-8B |
|---|---|---|
| GPQA Diamond | 47.2% | 26.1% |
| LMArena Expert | 1223 | 1113 |
| MMLU | 84.6% | 68.8% |
| SimpleQA Verified | 12.6% | — |
| Confabulations | 22.7% | — |
| ARC (AI2) Challenge | — | 82.8% |
| OpenBookQA | — | 82.6% |
| TriviaQA | — | 67.7% |

## Multimodal

- Claude 3 Opus: 26.6 (#112)
- Llama 3-8B: —

| Benchmark | Claude 3 Opus | Llama 3-8B |
|---|---|---|
| LMArena Vision | 1023 | — |

## Multilingual

- Claude 3 Opus: 41.6 (#202)
- Llama 3-8B: 31.0 (#256)

| Benchmark | Claude 3 Opus | Llama 3-8B |
|---|---|---|
| LMArena Non-English | 1258 | 1098 |
| LMArena Chinese | 1248 | 1076 |
| LMArena French | 1274 | 1158 |
| LMArena German | 1258 | 1104 |
| LMArena Japanese | 1204 | 967 |
| LMArena Korean | 1187 | 1003 |
| LMArena Russian | 1280 | 1109 |
| LMArena Spanish | 1246 | 1172 |

## Instruction Following

- Claude 3 Opus: 64.3 (#223)
- Llama 3-8B: 58.7 (#255)

| Benchmark | Claude 3 Opus | Llama 3-8B |
|---|---|---|
| LMArena Instruction Following | 1248 | 1127 |
| LiveBench Instruction Following | 63.9% | — |

## Long Context

- Claude 3 Opus: 38.2 (#197)
- Llama 3-8B: 34.2 (#246)

| Benchmark | Claude 3 Opus | Llama 3-8B |
|---|---|---|
| LMArena Longer Query | 1259 | 1128 |

## Writing & Preference

- Claude 3 Opus: 47.4 (#208)
- Llama 3-8B: 37.7 (#251)

| Benchmark | Claude 3 Opus | Llama 3-8B |
|---|---|---|
| LMArena Text | 1262 | 1166 |
| LMArena Creative Writing | 1235 | 1150 |
| LMArena Multi-Turn | 1275 | 1152 |
| LiveBench Language | 50.4% | — |

## FAQ

### Is Claude 3 Opus better than Llama 3-8B?

Claude 3 Opus is the stronger model overall, scoring 29.3 to 25.3 on the Noometry Index.

### Is Claude 3 Opus or Llama 3-8B better for coding?

Claude 3 Opus scores higher on coding benchmarks: 32.4 versus 30.5 in the Noometry coding category.

### How many benchmarks do Claude 3 Opus and Llama 3-8B share?

30 benchmarks have published results for both models. Claude 3 Opus has 46 scored results on Noometry and Llama 3-8B has 34.