# Amazon Nova Micro vs GPT-4.5

> GPT-4.5 is the stronger model overall, scoring 36.9 to 29.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/amazon-nova-micro-vs-gpt-4-5
- Last updated: 2026-10-10
- Shared benchmarks: 23

## Summary

- They share 23 benchmarks with published results for both. Amazon Nova Micro scores higher in 1 category and GPT-4.5 in 8 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where GPT-4.5 leads 57.1 to 39.7.
- The biggest single-benchmark swing is LiveBench Coding: 20.2% for Amazon Nova Micro and 75.2% for GPT-4.5.

## Snapshot

| | Amazon Nova Micro | GPT-4.5 |
|---|---|---|
| Provider | Amazon | OpenAI |
| Noometry Index | 29.9 | 36.9 |
| Rank | 290 | 200 |
| Context | 128K | — |
| Input $/M | $0.035 | — |
| Output $/M | $0.14 | — |
| Weights | Proprietary | Proprietary |

## Coding

- Amazon Nova Micro: 30.0 (#289)
- GPT-4.5: 41.8 (#102)

| Benchmark | Amazon Nova Micro | GPT-4.5 |
|---|---|---|
| LiveBench Coding | 20.2% | 75.2% |
| LMArena Coding | 1218 | 1397 |
| Aider Polyglot | — | 44.9% |
| WeirdML | — | 39.4% |

## Agentic & Tool Use

- Amazon Nova Micro: 21.9 (#125)
- GPT-4.5: 27.6 (#92)

| Benchmark | Amazon Nova Micro | GPT-4.5 |
|---|---|---|
| Berkeley Function Calling Leaderboard | 22.3% | — |
| Cybench | — | 17.5% |

## Reasoning

- Amazon Nova Micro: 16.7 (#289)
- GPT-4.5: 14.1 (#320)

| Benchmark | Amazon Nova Micro | GPT-4.5 |
|---|---|---|
| LiveBench Reasoning | 25.1% | 71.1% |
| LMArena Hard Prompts | 1191 | 1404 |
| LiveBench Data Analysis | 34% | 64.3% |
| LiveBench | 29.6% | 69% |
| ARC-AGI-2 | — | 0.8% |
| SimpleBench | — | 34.5% |
| ARC-AGI-1 | — | 10.3% |
| EnigmaEval | — | 3.2% |
| Epoch Capabilities Index | — | 136.74 |
| ForecastBench | — | 61.7 |

## Math

- Amazon Nova Micro: 24.9 (#252)
- GPT-4.5: 31.0 (#200)

| Benchmark | Amazon Nova Micro | GPT-4.5 |
|---|---|---|
| LiveBench Math | 34.5% | 69.3% |
| LMArena Math | 1206 | 1412 |
| OTIS Mock AIME 2024-2025 | — | 37.8% |
| Omni-MATH | 21.4% | — |
| MATH Level 5 | — | 78.6% |

## Knowledge

- Amazon Nova Micro: 29.2 (#231)
- GPT-4.5: 32.4 (#205)

| Benchmark | Amazon Nova Micro | GPT-4.5 |
|---|---|---|
| LMArena Expert | 1184 | 1394 |
| GPQA Diamond | — | 68.7% |
| Humanity's Last Exam | — | 5.4% |
| MMLU-Pro | 51.1% | — |
| Confabulations | — | 13.6% |
| Vectara Hallucination Rate | 5.5% | — |
| GPQA (HELM) | 38.3% | — |
| MMLU | 70.8% | — |

## Multimodal

- Amazon Nova Micro: —
- GPT-4.5: 37.0 (#68)

| Benchmark | Amazon Nova Micro | GPT-4.5 |
|---|---|---|
| LMArena Vision | — | 1195 |
| VPCT | — | 45% |

## Multilingual

- Amazon Nova Micro: 36.7 (#234)
- GPT-4.5: 52.7 (#78)

| Benchmark | Amazon Nova Micro | GPT-4.5 |
|---|---|---|
| LMArena Non-English | 1186 | 1413 |
| LMArena Chinese | 1209 | 1421 |
| LMArena French | 1237 | 1417 |
| LMArena German | 1192 | 1457 |
| LMArena Japanese | 1154 | 1416 |
| LMArena Korean | 1150 | 1392 |
| LMArena Russian | 1185 | 1419 |
| LMArena Spanish | 1225 | — |

## Instruction Following

- Amazon Nova Micro: 56.6 (#267)
- GPT-4.5: 72.8 (#129)

| Benchmark | Amazon Nova Micro | GPT-4.5 |
|---|---|---|
| LiveBench Instruction Following | 48% | 72.3% |
| LMArena Instruction Following | 1174 | 1404 |
| IFEval | 76% | — |

## Long Context

- Amazon Nova Micro: 36.5 (#224)
- GPT-4.5: 40.4 (#150)

| Benchmark | Amazon Nova Micro | GPT-4.5 |
|---|---|---|
| LMArena Longer Query | 1206 | 1406 |
| Fiction.LiveBench | — | 63.9% |

## Writing & Preference

- Amazon Nova Micro: 39.7 (#242)
- GPT-4.5: 57.1 (#129)

| Benchmark | Amazon Nova Micro | GPT-4.5 |
|---|---|---|
| LMArena Text | 1208 | 1417 |
| LMArena Creative Writing | 1172 | 1394 |
| LMArena Multi-Turn | 1178 | 1444 |
| LiveBench Language | 15.8% | 61.5% |
| Short-Story Creative Writing | — | 75.6% |
| EQ-Bench Creative Writing | — | 1258 |
| WildBench | 74.3% | — |

## FAQ

### Is Amazon Nova Micro better than GPT-4.5?

GPT-4.5 is the stronger model overall, scoring 36.9 to 29.9 on the Noometry Index.

### Is Amazon Nova Micro or GPT-4.5 better for coding?

GPT-4.5 scores higher on coding benchmarks: 41.8 versus 30.0 in the Noometry coding category.

### How many benchmarks do Amazon Nova Micro and GPT-4.5 share?

23 benchmarks have published results for both models. Amazon Nova Micro has 32 scored results on Noometry and GPT-4.5 has 42.