# Claude 3 Sonnet vs Llama 3.1-70B

> Claude 3 Sonnet and Llama 3.1-70B score almost the same on the Noometry Index (29.0 vs 29.6), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/claude-3-sonnet-vs-llama-3-1-70b
- Last updated: 2026-10-12
- Shared benchmarks: 26

## Summary

- They share 26 benchmarks with published results for both. Claude 3 Sonnet scores higher in 1 category and Llama 3.1-70B in 7 categories; 5 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Claude 3 Sonnet leads 42.1 to 35.4.
- The biggest single-benchmark swing is MATH Level 5: 18.2% for Claude 3 Sonnet and 36.7% for Llama 3.1-70B.
- Llama 3.1-70B has downloadable open weights; the other is API-only.

## Snapshot

| | Claude 3 Sonnet | Llama 3.1-70B |
|---|---|---|
| Provider | Anthropic | Meta |
| Noometry Index | 29.0 | 29.6 |
| Rank | 319 | 308 |
| Context | — | 128K |
| Input $/M | — | $0.40 |
| Output $/M | — | $0.40 |
| Weights | Proprietary | Open |

## Coding

- Claude 3 Sonnet: 29.6 (#302)
- Llama 3.1-70B: 30.3 (#296)

| Benchmark | Claude 3 Sonnet | Llama 3.1-70B |
|---|---|---|
| WeirdML | 10.2% | 9% |
| BigCodeBench Instruct | 42.7% | 46.1% |
| LMArena Coding | 1223 | 1260 |
| BigCodeBench Complete | 53.8% | 54.8% |
| HumanEval+ | 64% | — |
| MBPP+ | 69.3% | — |

## Agentic & Tool Use

- Claude 3 Sonnet: —
- Llama 3.1-70B: 25.1 (#112)

| Benchmark | Claude 3 Sonnet | Llama 3.1-70B |
|---|---|---|
| TheAgentCompany | — | 6.9% |
| BALROG | — | 27.9% |

## Reasoning

- Claude 3 Sonnet: 20.5 (#237)
- Llama 3.1-70B: 21.6 (#220)

| Benchmark | Claude 3 Sonnet | Llama 3.1-70B |
|---|---|---|
| LMArena Hard Prompts | 1197 | 1241 |
| DTBench | 53.6% | 60% |
| Epoch Capabilities Index | 120.7 | 125.92 |
| LMCA | — | 14.8% |
| WinoGrande | 75.1% | — |

## Math

- Claude 3 Sonnet: 10.7 (#310)
- Llama 3.1-70B: 13.5 (#304)

| Benchmark | Claude 3 Sonnet | Llama 3.1-70B |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 2.5% | 3.6% |
| LMArena Math | 1213 | 1252 |
| MATH Level 5 | 18.2% | 36.7% |
| Omni-MATH | — | 21% |

## Knowledge

- Claude 3 Sonnet: 21.1 (#276)
- Llama 3.1-70B: 24.2 (#269)

| Benchmark | Claude 3 Sonnet | Llama 3.1-70B |
|---|---|---|
| GPQA Diamond | 40.6% | 44.2% |
| LMArena Expert | 1173 | 1209 |
| MMLU | 75.9% | 80.1% |
| MMLU-Pro | — | 65.3% |
| GPQA (HELM) | — | 42.6% |

## Multimodal

- Claude 3 Sonnet: 25.2 (#125)
- Llama 3.1-70B: —

| Benchmark | Claude 3 Sonnet | Llama 3.1-70B |
|---|---|---|
| LMArena Vision | 984 | — |

## Multilingual

- Claude 3 Sonnet: 37.8 (#234)
- Llama 3.1-70B: 38.8 (#225)

| Benchmark | Claude 3 Sonnet | Llama 3.1-70B |
|---|---|---|
| LMArena Non-English | 1205 | 1219 |
| LMArena Chinese | 1189 | 1215 |
| LMArena French | 1229 | 1261 |
| LMArena German | 1204 | 1222 |
| LMArena Japanese | 1131 | 1132 |
| LMArena Korean | 1128 | 1140 |
| LMArena Russian | 1227 | 1234 |
| LMArena Spanish | 1204 | 1253 |

## Instruction Following

- Claude 3 Sonnet: 62.8 (#235)
- Llama 3.1-70B: 65.3 (#223)

| Benchmark | Claude 3 Sonnet | Llama 3.1-70B |
|---|---|---|
| LMArena Instruction Following | 1199 | 1231 |
| IFEval | — | 82.1% |

## Long Context

- Claude 3 Sonnet: 36.7 (#228)
- Llama 3.1-70B: 37.6 (#214)

| Benchmark | Claude 3 Sonnet | Llama 3.1-70B |
|---|---|---|
| LMArena Longer Query | 1211 | 1241 |

## Writing & Preference

- Claude 3 Sonnet: 42.1 (#238)
- Llama 3.1-70B: 35.4 (#267)

| Benchmark | Claude 3 Sonnet | Llama 3.1-70B |
|---|---|---|
| LMArena Text | 1218 | 1261 |
| LMArena Creative Writing | 1186 | 1232 |
| LMArena Multi-Turn | 1227 | 1256 |
| EQ-Bench Creative Writing | — | 784 |
| WildBench | — | 75.8% |

## FAQ

### Is Claude 3 Sonnet better than Llama 3.1-70B?

Claude 3 Sonnet and Llama 3.1-70B score almost the same on the Noometry Index (29.0 vs 29.6), so choose on price, context window or the category you care about most.

### Is Claude 3 Sonnet or Llama 3.1-70B better for coding?

They score almost the same on coding (29.6 vs 30.3); test both on your own repository before choosing.

### How many benchmarks do Claude 3 Sonnet and Llama 3.1-70B share?

26 benchmarks have published results for both models. Claude 3 Sonnet has 30 scored results on Noometry and Llama 3.1-70B has 35.