# Amazon Nova Micro vs Llama 3.1-405B

> Amazon Nova Micro and Llama 3.1-405B score almost the same on the Noometry Index (30.4 vs 30.7), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/amazon-nova-micro-vs-llama-3-1-405b
- Last updated: 2026-10-10
- Shared benchmarks: 23

## Summary

- They share 23 benchmarks with published results for both. Amazon Nova Micro scores higher in 4 categories and Llama 3.1-405B in 5 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in instruction following, where Llama 3.1-405B leads 65.9 to 56.3.
- The biggest single-benchmark swing is MMLU-Pro: 51.1% for Amazon Nova Micro and 72.3% for Llama 3.1-405B.
- Llama 3.1-405B has downloadable open weights; the other is API-only.

## Snapshot

| | Amazon Nova Micro | Llama 3.1-405B |
|---|---|---|
| Provider | Amazon | Meta |
| Noometry Index | 30.4 | 30.7 |
| Rank | 294 | 288 |
| Context | 128K | — |
| Input $/M | $0.035 | — |
| Output $/M | $0.14 | — |
| Weights | Proprietary | Open |

## Coding

- Amazon Nova Micro: 30.5 (#295)
- Llama 3.1-405B: 33.1 (#262)

| Benchmark | Amazon Nova Micro | Llama 3.1-405B |
|---|---|---|
| LMArena Coding | 1218 | 1291 |
| WeirdML | — | 21.4% |
| LiveBench Coding | 20.2% | — |

## Agentic & Tool Use

- Amazon Nova Micro: 22.1 (#132)
- Llama 3.1-405B: 21.0 (#140)

| Benchmark | Amazon Nova Micro | Llama 3.1-405B |
|---|---|---|
| Berkeley Function Calling Leaderboard | 22.3% | — |
| TheAgentCompany | — | 7.4% |
| Cybench | — | 7.5% |

## Reasoning

- Amazon Nova Micro: 17.4 (#294)
- Llama 3.1-405B: 16.8 (#300)

| Benchmark | Amazon Nova Micro | Llama 3.1-405B |
|---|---|---|
| LMArena Hard Prompts | 1191 | 1269 |
| SimpleBench | — | 23% |
| Kagi LLM Benchmark | — | 45% |
| LiveBench Reasoning | 25.1% | — |
| DTBench | — | 61.4% |
| LiveBench Data Analysis | 34% | — |
| BIG-Bench Hard | — | 82.9% |
| Epoch Capabilities Index | — | 128.75 |
| ForecastBench | — | 59.9 |
| HellaSwag | — | 89.2% |
| LiveBench | 29.6% | — |
| PIQA | — | 85.9% |
| WinoGrande | — | 89.2% |

## Math

- Amazon Nova Micro: 26.9 (#254)
- Llama 3.1-405B: 18.4 (#290)

| Benchmark | Amazon Nova Micro | Llama 3.1-405B |
|---|---|---|
| Omni-MATH | 21.4% | 24.9% |
| LMArena Math | 1206 | 1281 |
| OTIS Mock AIME 2024-2025 | — | 9.7% |
| LiveBench Math | 34.5% | — |
| MATH Level 5 | — | 49.8% |

## Knowledge

- Amazon Nova Micro: 29.6 (#237)
- Llama 3.1-405B: 30.4 (#227)

| Benchmark | Amazon Nova Micro | Llama 3.1-405B |
|---|---|---|
| MMLU-Pro | 51.1% | 72.3% |
| GPQA (HELM) | 38.3% | 52.2% |
| LMArena Expert | 1184 | 1243 |
| MMLU | 70.8% | 84.5% |
| GPQA Diamond | — | 50.9% |
| Confabulations | — | 17.6% |
| Vectara Hallucination Rate | 5.5% | — |
| ARC (AI2) Challenge | — | 95.3% |
| TriviaQA | — | 82.7% |

## Multilingual

- Amazon Nova Micro: 36.5 (#239)
- Llama 3.1-405B: 40.7 (#214)

| Benchmark | Amazon Nova Micro | Llama 3.1-405B |
|---|---|---|
| LMArena Non-English | 1186 | 1248 |
| LMArena Chinese | 1209 | 1242 |
| LMArena French | 1238 | 1279 |
| LMArena German | 1192 | 1252 |
| LMArena Japanese | 1154 | 1208 |
| LMArena Korean | 1150 | 1184 |
| LMArena Russian | 1185 | 1265 |
| LMArena Spanish | 1225 | 1260 |

## Instruction Following

- Amazon Nova Micro: 56.3 (#272)
- Llama 3.1-405B: 65.9 (#214)

| Benchmark | Amazon Nova Micro | Llama 3.1-405B |
|---|---|---|
| IFEval | 76% | 81.1% |
| LMArena Instruction Following | 1174 | 1259 |
| LiveBench Instruction Following | 48% | — |

## Long Context

- Amazon Nova Micro: 36.5 (#229)
- Llama 3.1-405B: 38.4 (#197)

| Benchmark | Amazon Nova Micro | Llama 3.1-405B |
|---|---|---|
| LMArena Longer Query | 1205 | 1266 |

## Writing & Preference

- Amazon Nova Micro: 39.5 (#247)
- Llama 3.1-405B: 38.9 (#251)

| Benchmark | Amazon Nova Micro | Llama 3.1-405B |
|---|---|---|
| LMArena Text | 1208 | 1284 |
| LMArena Creative Writing | 1172 | 1262 |
| WildBench | 74.3% | 78.3% |
| LMArena Multi-Turn | 1178 | 1297 |
| EQ-Bench Creative Writing | — | 870 |
| LiveBench Language | 15.8% | — |

## FAQ

### Is Amazon Nova Micro better than Llama 3.1-405B?

Amazon Nova Micro and Llama 3.1-405B score almost the same on the Noometry Index (30.4 vs 30.7), so choose on price, context window or the category you care about most.

### Is Amazon Nova Micro or Llama 3.1-405B better for coding?

Llama 3.1-405B scores higher on coding benchmarks: 33.1 versus 30.5 in the Noometry coding category.

### How many benchmarks do Amazon Nova Micro and Llama 3.1-405B share?

23 benchmarks have published results for both models. Amazon Nova Micro has 32 scored results on Noometry and Llama 3.1-405B has 42.