# Amazon Nova Pro vs GPT-5.5 Instant

> GPT-5.5 Instant is the stronger model overall, scoring 42.5 to 30.5 on the Noometry Index.

- Canonical page: https://noometry.com/compare/amazon-nova-pro-vs-gpt-5-5-instant
- Last updated: 2026-10-10
- Shared benchmarks: 19

## Summary

- They share 19 benchmarks with published results for both. Amazon Nova Pro scores higher in 1 category and GPT-5.5 Instant in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where GPT-5.5 Instant leads 48.9 to 27.1.

## Snapshot

| | Amazon Nova Pro | GPT-5.5 Instant |
|---|---|---|
| Provider | Amazon | OpenAI |
| Noometry Index | 30.5 | 42.5 |
| Rank | 278 | 99 |
| Context | 300K | — |
| Input $/M | $0.80 | — |
| Output $/M | $3.20 | — |
| Weights | Proprietary | Proprietary |

## Coding

- Amazon Nova Pro: 34.6 (#224)
- GPT-5.5 Instant: 43.7 (#73)

| Benchmark | Amazon Nova Pro | GPT-5.5 Instant |
|---|---|---|
| LMArena Coding | 1270 | 1433 |
| SciCode | — | 48.6% |
| LiveBench Coding | 38.1% | — |

## Agentic & Tool Use

- Amazon Nova Pro: 16.6 (#139)
- GPT-5.5 Instant: —

| Benchmark | Amazon Nova Pro | GPT-5.5 Instant |
|---|---|---|
| Berkeley Function Calling Leaderboard | 25% | — |
| TheAgentCompany | 1.7% | — |

## Reasoning

- Amazon Nova Pro: 19.2 (#240)
- GPT-5.5 Instant: 24.2 (#149)

| Benchmark | Amazon Nova Pro | GPT-5.5 Instant |
|---|---|---|
| LMArena Hard Prompts | 1246 | 1426 |
| Epoch Capabilities Index | 123.75 | 142.48 |
| CritPt | — | 0% |
| Chess Puzzles | — | 12% |
| LiveBench Reasoning | 32.6% | — |
| LiveBench Data Analysis | 48.3% | — |
| LiveBench | 43.5% | — |

## Math

- Amazon Nova Pro: 26.4 (#240)
- GPT-5.5 Instant: 26.1 (#241)

| Benchmark | Amazon Nova Pro | GPT-5.5 Instant |
|---|---|---|
| LMArena Math | 1252 | 1420 |
| FrontierMath (Tiers 1-3) | — | 26.3% |
| FrontierMath Tier 4 | — | 2.4% |
| OTIS Mock AIME 2024-2025 | — | 68.1% |
| Omni-MATH | 24.2% | — |
| LiveBench Math | 38% | — |

## Knowledge

- Amazon Nova Pro: 27.1 (#246)
- GPT-5.5 Instant: 48.9 (#68)

| Benchmark | Amazon Nova Pro | GPT-5.5 Instant |
|---|---|---|
| LMArena Expert | 1211 | 1409 |
| GPQA Diamond | — | 82.5% |
| Humanity's Last Exam | 4.4% | — |
| MMLU-Pro | 67.3% | — |
| Confabulations | 30.1% | — |
| Vectara Hallucination Rate | 5.1% | — |
| GPQA (HELM) | 44.6% | — |
| MMLU | 82% | — |

## Multimodal

- Amazon Nova Pro: 24.5 (#121)
- GPT-5.5 Instant: 39.3 (#48)

| Benchmark | Amazon Nova Pro | GPT-5.5 Instant |
|---|---|---|
| LMArena Vision | 980 | 1250 |
| LMArena Document | — | 1403 |

## Multilingual

- Amazon Nova Pro: 39.9 (#218)
- GPT-5.5 Instant: 53.0 (#76)

| Benchmark | Amazon Nova Pro | GPT-5.5 Instant |
|---|---|---|
| LMArena Non-English | 1234 | 1417 |
| LMArena Chinese | 1244 | 1457 |
| LMArena French | 1270 | 1428 |
| LMArena German | 1243 | 1410 |
| LMArena Japanese | 1200 | 1408 |
| LMArena Korean | 1203 | 1393 |
| LMArena Russian | 1240 | 1430 |
| LMArena Spanish | 1182 | 1430 |

## Instruction Following

- Amazon Nova Pro: 65.1 (#221)
- GPT-5.5 Instant: 74.4 (#94)

| Benchmark | Amazon Nova Pro | GPT-5.5 Instant |
|---|---|---|
| LMArena Instruction Following | 1235 | 1407 |
| LiveBench Instruction Following | 67.1% | — |
| IFEval | 81.5% | — |

## Long Context

- Amazon Nova Pro: 38.1 (#199)
- GPT-5.5 Instant: 43.4 (#92)

| Benchmark | Amazon Nova Pro | GPT-5.5 Instant |
|---|---|---|
| LMArena Longer Query | 1255 | 1422 |

## Writing & Preference

- Amazon Nova Pro: 44.1 (#221)
- GPT-5.5 Instant: 62.0 (#81)

| Benchmark | Amazon Nova Pro | GPT-5.5 Instant |
|---|---|---|
| LMArena Text | 1259 | 1419 |
| LMArena Creative Writing | 1212 | 1420 |
| LMArena Multi-Turn | 1245 | 1434 |
| Short-Story Creative Writing | 60.5% | — |
| WildBench | 77.7% | — |
| LiveBench Language | 37% | — |

## FAQ

### Is Amazon Nova Pro better than GPT-5.5 Instant?

GPT-5.5 Instant is the stronger model overall, scoring 42.5 to 30.5 on the Noometry Index.

### Is Amazon Nova Pro or GPT-5.5 Instant better for coding?

GPT-5.5 Instant scores higher on coding benchmarks: 43.7 versus 34.6 in the Noometry coding category.

### How many benchmarks do Amazon Nova Pro and GPT-5.5 Instant share?

19 benchmarks have published results for both models. Amazon Nova Pro has 38 scored results on Noometry and GPT-5.5 Instant has 27.