Model comparison
Claude 3 Sonnet vs Llama 3.1-405B
Llama 3.1-405B is the stronger model overall, scoring 30.4 to 28.8 on the Noometry Index.
Last verified . 25 shared benchmarks.
Summary
- They share 25 benchmarks with published results for both. Claude 3 Sonnet scores higher in 2 categories and Llama 3.1-405B in 6 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Llama 3.1-405B leads 30.4 to 21.1.
- The biggest single-benchmark swing is MATH Level 5: 18.2% for Claude 3 Sonnet and 49.8% for Llama 3.1-405B.
- Llama 3.1-405B has downloadable open weights; the other is API-only.
Side by side
| Claude 3 Sonnet | Llama 3.1-405B | |
|---|---|---|
| Provider | Anthropic | Meta |
| Noometry Index | 28.8 | 30.4 |
| Released | 2024-02-29 | 2024-07-23 |
| Weights | Proprietary | Open |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 30 | 42 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Llama 3.1-405B leads
Claude 3 Sonnet: 29.2 (#296), Llama 3.1-405B: 32.7 (#257)
| Benchmark | Claude 3 Sonnet | Llama 3.1-405B |
|---|---|---|
| WeirdML | 10.2% | 21.4% |
| LMArena Coding | 1223 | 1291 |
| BigCodeBench Instruct | 42.7% | — |
| BigCodeBench Complete | 53.8% | — |
| HumanEval+ | 64% | — |
| MBPP+ | 69.3% | — |
Agentic & Tool Use Not comparable
Claude 3 Sonnet: —, Llama 3.1-405B: 20.9 (#131)
| Benchmark | Claude 3 Sonnet | Llama 3.1-405B |
|---|---|---|
| TheAgentCompany | — | 7.4% |
| Cybench | — | 7.5% |
Reasoning Claude 3 Sonnet leads
Claude 3 Sonnet: 19.7 (#232), Llama 3.1-405B: 16.4 (#293)
| Benchmark | Claude 3 Sonnet | Llama 3.1-405B |
|---|---|---|
| LMArena Hard Prompts | 1197 | 1270 |
| DTBench | 53.6% | 61.4% |
| Epoch Capabilities Index | 120.69 | 128.76 |
| WinoGrande | 75.1% | 89.2% |
| SimpleBench | — | 23% |
| Kagi LLM Benchmark | — | 45% |
| BIG-Bench Hard | — | 82.9% |
| ForecastBench | — | 59.9 |
| HellaSwag | — | 89.2% |
| PIQA | — | 85.9% |
Math Llama 3.1-405B leads
Claude 3 Sonnet: 10.0 (#305), Llama 3.1-405B: 17.3 (#283)
| Benchmark | Claude 3 Sonnet | Llama 3.1-405B |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 2.5% | 9.7% |
| LMArena Math | 1213 | 1281 |
| MATH Level 5 | 18.2% | 49.8% |
| Omni-MATH | — | 24.9% |
Knowledge Llama 3.1-405B leads
Claude 3 Sonnet: 21.1 (#271), Llama 3.1-405B: 30.4 (#221)
| Benchmark | Claude 3 Sonnet | Llama 3.1-405B |
|---|---|---|
| GPQA Diamond | 40.6% | 50.9% |
| LMArena Expert | 1173 | 1243 |
| MMLU | 75.9% | 84.5% |
| MMLU-Pro | — | 72.3% |
| Confabulations | — | 17.6% |
| GPQA (HELM) | — | 52.2% |
| ARC (AI2) Challenge | — | 95.3% |
| TriviaQA | — | 82.7% |
Multimodal Not comparable
Claude 3 Sonnet: 24.7 (#120), Llama 3.1-405B: —
| Benchmark | Claude 3 Sonnet | Llama 3.1-405B |
|---|---|---|
| LMArena Vision | 984 | — |
Multilingual Llama 3.1-405B leads
Claude 3 Sonnet: 38.0 (#229), Llama 3.1-405B: 40.9 (#209)
| Benchmark | Claude 3 Sonnet | Llama 3.1-405B |
|---|---|---|
| LMArena Non-English | 1205 | 1248 |
| LMArena Chinese | 1188 | 1242 |
| LMArena French | 1228 | 1278 |
| LMArena German | 1204 | 1252 |
| LMArena Japanese | 1131 | 1208 |
| LMArena Korean | 1128 | 1184 |
| LMArena Russian | 1227 | 1265 |
| LMArena Spanish | 1204 | 1259 |
Instruction Following Llama 3.1-405B leads
Claude 3 Sonnet: 63.1 (#230), Llama 3.1-405B: 66.1 (#209)
| Benchmark | Claude 3 Sonnet | Llama 3.1-405B |
|---|---|---|
| LMArena Instruction Following | 1200 | 1259 |
| IFEval | — | 81.1% |
Long Context Llama 3.1-405B leads
Claude 3 Sonnet: 36.7 (#223), Llama 3.1-405B: 38.4 (#192)
| Benchmark | Claude 3 Sonnet | Llama 3.1-405B |
|---|---|---|
| LMArena Longer Query | 1211 | 1266 |
Writing & Preference Claude 3 Sonnet leads
Claude 3 Sonnet: 42.3 (#233), Llama 3.1-405B: 39.1 (#246)
| Benchmark | Claude 3 Sonnet | Llama 3.1-405B |
|---|---|---|
| LMArena Text | 1218 | 1284 |
| LMArena Creative Writing | 1186 | 1262 |
| LMArena Multi-Turn | 1227 | 1297 |
| EQ-Bench Creative Writing | — | 870 |
| WildBench | — | 78.3% |
Frequently asked questions
Is Claude 3 Sonnet better than Llama 3.1-405B?
Llama 3.1-405B is the stronger model overall, scoring 30.4 to 28.8 on the Noometry Index.
Is Claude 3 Sonnet or Llama 3.1-405B better for coding?
Llama 3.1-405B scores higher on coding benchmarks: 32.7 versus 29.2 in the Noometry coding category.
How many benchmarks do Claude 3 Sonnet and Llama 3.1-405B share?
25 benchmarks have published results for both models. Claude 3 Sonnet has 30 scored results on Noometry and Llama 3.1-405B has 42.