Model comparison
Llama 3.1-405B vs Mistral Small 3
Llama 3.1-405B and Mistral Small 3 score almost the same on the Noometry Index (30.7 vs 31.2), so choose on price, context window or the category you care about most.
Last verified . 21 shared benchmarks.
Meta
Mistral AISummary
- They share 21 benchmarks with published results for both. Llama 3.1-405B scores higher in 6 categories and Mistral Small 3 in 2 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Llama 3.1-405B leads 38.9 to 32.2.
- The biggest single-benchmark swing is Confabulations: 17.6% for Llama 3.1-405B and 25.2% for Mistral Small 3.
Side by side
| Llama 3.1-405B | Mistral Small 3 | |
|---|---|---|
| Provider | Meta | Mistral AI |
| Noometry Index | 30.7 | 31.2 |
| Released | 2024-07-23 | 2025-01-30 |
| Weights | Open | Open |
| Context window | — | 33K |
| Max output | — | 16K |
| Input $ / M tokens | — | $0.05 |
| Output $ / M tokens | — | $0.08 |
| Results tracked | 42 | 24 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Mistral Small 3 leads
Llama 3.1-405B: 33.1 (#262), Mistral Small 3: 36.5 (#207)
| Benchmark | Llama 3.1-405B | Mistral Small 3 |
|---|---|---|
| LMArena Coding | 1291 | 1246 |
| WeirdML | 21.4% | — |
| BigCodeBench Instruct | — | 45.3% |
| BigCodeBench Complete | — | 50.4% |
Agentic & Tool Use Not comparable
Llama 3.1-405B: 21.0 (#140), Mistral Small 3: —
| Benchmark | Llama 3.1-405B | Mistral Small 3 |
|---|---|---|
| TheAgentCompany | 7.4% | — |
| Cybench | 7.5% | — |
Reasoning Mistral Small 3 leads
Llama 3.1-405B: 16.8 (#300), Mistral Small 3: 18.9 (#273)
| Benchmark | Llama 3.1-405B | Mistral Small 3 |
|---|---|---|
| LMArena Hard Prompts | 1269 | 1233 |
| Epoch Capabilities Index | 128.75 | 127.07 |
| SimpleBench | 23% | — |
| Kagi LLM Benchmark | 45% | — |
| Chess Puzzles | — | 0% |
| DTBench | 61.4% | — |
| BIG-Bench Hard | 82.9% | — |
| ForecastBench | 59.9 | — |
| HellaSwag | 89.2% | — |
| PIQA | 85.9% | — |
| WinoGrande | 89.2% | — |
Math Llama 3.1-405B leads
Llama 3.1-405B: 18.4 (#290), Mistral Small 3: 16.3 (#295)
| Benchmark | Llama 3.1-405B | Mistral Small 3 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 9.7% | 6.7% |
| LMArena Math | 1281 | 1240 |
| Omni-MATH | 24.9% | — |
| MATH Level 5 | 49.8% | — |
Knowledge Llama 3.1-405B leads
Llama 3.1-405B: 30.4 (#227), Mistral Small 3: 25.1 (#263)
| Benchmark | Llama 3.1-405B | Mistral Small 3 |
|---|---|---|
| GPQA Diamond | 50.9% | 47.3% |
| Confabulations | 17.6% | 25.2% |
| LMArena Expert | 1243 | 1202 |
| MMLU-Pro | 72.3% | — |
| GPQA (HELM) | 52.2% | — |
| ARC (AI2) Challenge | 95.3% | — |
| MMLU | 84.5% | — |
| TriviaQA | 82.7% | — |
Multilingual Llama 3.1-405B leads
Llama 3.1-405B: 40.7 (#214), Mistral Small 3: 37.3 (#236)
| Benchmark | Llama 3.1-405B | Mistral Small 3 |
|---|---|---|
| LMArena Non-English | 1248 | 1198 |
| LMArena Chinese | 1242 | 1204 |
| LMArena French | 1279 | 1203 |
| LMArena German | 1252 | 1211 |
| LMArena Japanese | 1208 | 1111 |
| LMArena Korean | 1184 | 1188 |
| LMArena Russian | 1265 | 1216 |
| LMArena Spanish | 1260 | — |
Instruction Following Llama 3.1-405B leads
Llama 3.1-405B: 65.9 (#214), Mistral Small 3: 63.7 (#229)
| Benchmark | Llama 3.1-405B | Mistral Small 3 |
|---|---|---|
| LMArena Instruction Following | 1259 | 1214 |
| IFEval | 81.1% | — |
Long Context Too close to call
Llama 3.1-405B: 38.4 (#197), Mistral Small 3: 37.8 (#211)
| Benchmark | Llama 3.1-405B | Mistral Small 3 |
|---|---|---|
| LMArena Longer Query | 1266 | 1246 |
Writing & Preference Llama 3.1-405B leads
Llama 3.1-405B: 38.9 (#251), Mistral Small 3: 32.2 (#280)
| Benchmark | Llama 3.1-405B | Mistral Small 3 |
|---|---|---|
| LMArena Text | 1284 | 1234 |
| LMArena Creative Writing | 1262 | 1195 |
| EQ-Bench Creative Writing | 870 | 707 |
| LMArena Multi-Turn | 1297 | 1217 |
| WildBench | 78.3% | — |
Frequently asked questions
Is Llama 3.1-405B better than Mistral Small 3?
Llama 3.1-405B and Mistral Small 3 score almost the same on the Noometry Index (30.7 vs 31.2), so choose on price, context window or the category you care about most.
Is Llama 3.1-405B or Mistral Small 3 better for coding?
Mistral Small 3 scores higher on coding benchmarks: 36.5 versus 33.1 in the Noometry coding category.
How many benchmarks do Llama 3.1-405B and Mistral Small 3 share?
21 benchmarks have published results for both models. Llama 3.1-405B has 42 scored results on Noometry and Mistral Small 3 has 24.