# Amazon Nova Pro vs gpt-oss-120b

> gpt-oss-120b is the stronger model overall, scoring 36.0 to 30.5 on the Noometry Index.

- Canonical page: https://noometry.com/compare/amazon-nova-pro-vs-gpt-oss-120b
- Last updated: 2026-10-10
- Shared benchmarks: 26

## Summary

- They share 26 benchmarks with published results for both. Amazon Nova Pro scores higher in 3 categories and gpt-oss-120b in 6 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where gpt-oss-120b leads 50.6 to 26.4.
- The biggest single-benchmark swing is Omni-MATH: 24.2% for Amazon Nova Pro and 68.8% for gpt-oss-120b.
- gpt-oss-120b is cheaper at $0.037 / $0.17 per million input/output tokens, against $0.80 / $3.20 for Amazon Nova Pro.
- Amazon Nova Pro accepts more context: 300K tokens versus 131K.
- gpt-oss-120b has downloadable open weights; the other is API-only.

## Snapshot

| | Amazon Nova Pro | gpt-oss-120b |
|---|---|---|
| Provider | Amazon | OpenAI |
| Noometry Index | 30.5 | 36.0 |
| Rank | 278 | 210 |
| Context | 300K | 131K |
| Input $/M | $0.80 | $0.037 |
| Output $/M | $3.20 | $0.17 |
| Weights | Proprietary | Open |

## Coding

- Amazon Nova Pro: 34.6 (#224)
- gpt-oss-120b: 33.2 (#251)

| Benchmark | Amazon Nova Pro | gpt-oss-120b |
|---|---|---|
| LMArena Coding | 1270 | 1380 |
| SWE-bench Verified (bash only) | — | 26% |
| Aider Polyglot | — | 41.8% |
| SciCode | — | 36% |
| WeirdML | — | 48.2% |
| LiveBench Coding | 38.1% | — |
| ALE-Bench | — | 575.62 |
| AlgoTune | — | 1.41 |

## Agentic & Tool Use

- Amazon Nova Pro: 16.6 (#139)
- gpt-oss-120b: 12.1 (#145)

| Benchmark | Amazon Nova Pro | gpt-oss-120b |
|---|---|---|
| Terminal-Bench | — | 18.7% |
| APEX-Agents | — | 4.4% |
| Berkeley Function Calling Leaderboard | 25% | — |
| TheAgentCompany | 1.7% | — |
| METR Time Horizons | — | 56.6% |
| Vending-Bench 2 | — | -21.53 |

## Reasoning

- Amazon Nova Pro: 19.2 (#240)
- gpt-oss-120b: 19.5 (#236)

| Benchmark | Amazon Nova Pro | gpt-oss-120b |
|---|---|---|
| LMArena Hard Prompts | 1246 | 1364 |
| Epoch Capabilities Index | 123.75 | 139.94 |
| SimpleBench | — | 22.1% |
| Kagi LLM Benchmark | — | 58.6% |
| CritPt | — | 1.1% |
| Chess Puzzles | — | 20% |
| LiveBench Reasoning | 32.6% | — |
| Mystery Game Puzzles | — | 2% |
| DTBench | — | 76.3% |
| LiveBench Data Analysis | 48.3% | — |
| LMCA | — | 22.1% |
| Surface Evolver Bench | — | 25% |
| LiveBench | 43.5% | — |

## Math

- Amazon Nova Pro: 26.4 (#240)
- gpt-oss-120b: 50.6 (#43)

| Benchmark | Amazon Nova Pro | gpt-oss-120b |
|---|---|---|
| Omni-MATH | 24.2% | 68.8% |
| LMArena Math | 1252 | 1388 |
| OTIS Mock AIME 2024-2025 | — | 88.9% |
| LiveBench Math | 38% | — |

## Knowledge

- Amazon Nova Pro: 27.1 (#246)
- gpt-oss-120b: 42.3 (#89)

| Benchmark | Amazon Nova Pro | gpt-oss-120b |
|---|---|---|
| MMLU-Pro | 67.3% | 79.5% |
| Confabulations | 30.1% | 15.7% |
| Vectara Hallucination Rate | 5.1% | 14.2% |
| GPQA (HELM) | 44.6% | 68.4% |
| LMArena Expert | 1211 | 1356 |
| GPQA Diamond | — | 75.8% |
| Humanity's Last Exam | 4.4% | — |
| MMLU | 82% | — |

## Multimodal

- Amazon Nova Pro: 24.5 (#121)
- gpt-oss-120b: —

| Benchmark | Amazon Nova Pro | gpt-oss-120b |
|---|---|---|
| LMArena Vision | 980 | — |

## Multilingual

- Amazon Nova Pro: 39.9 (#218)
- gpt-oss-120b: 48.2 (#142)

| Benchmark | Amazon Nova Pro | gpt-oss-120b |
|---|---|---|
| LMArena Non-English | 1234 | 1350 |
| LMArena Chinese | 1244 | 1384 |
| LMArena French | 1270 | 1370 |
| LMArena German | 1243 | 1355 |
| LMArena Japanese | 1200 | 1332 |
| LMArena Korean | 1203 | 1283 |
| LMArena Russian | 1240 | 1343 |
| LMArena Spanish | 1182 | 1388 |

## Instruction Following

- Amazon Nova Pro: 65.1 (#221)
- gpt-oss-120b: 69.5 (#168)

| Benchmark | Amazon Nova Pro | gpt-oss-120b |
|---|---|---|
| IFEval | 81.5% | 83.6% |
| LMArena Instruction Following | 1235 | 1318 |
| LiveBench Instruction Following | 67.1% | — |

## Long Context

- Amazon Nova Pro: 38.1 (#199)
- gpt-oss-120b: 31.4 (#273)

| Benchmark | Amazon Nova Pro | gpt-oss-120b |
|---|---|---|
| LMArena Longer Query | 1255 | 1319 |
| Fiction.LiveBench | — | 44.4% |

## Writing & Preference

- Amazon Nova Pro: 44.1 (#221)
- gpt-oss-120b: 46.7 (#213)

| Benchmark | Amazon Nova Pro | gpt-oss-120b |
|---|---|---|
| LMArena Text | 1259 | 1366 |
| LMArena Creative Writing | 1212 | 1274 |
| Short-Story Creative Writing | 60.5% | 77.1% |
| WildBench | 77.7% | 84.5% |
| LMArena Multi-Turn | 1245 | 1340 |
| EQ-Bench Creative Writing | — | 961 |
| LiveBench Language | 37% | — |

## FAQ

### Is Amazon Nova Pro better than gpt-oss-120b?

gpt-oss-120b is the stronger model overall, scoring 36.0 to 30.5 on the Noometry Index.

### Which is cheaper, Amazon Nova Pro or gpt-oss-120b?

gpt-oss-120b is cheaper. It lists at $0.037 per million input tokens and $0.17 per million output tokens; Amazon Nova Pro lists at $0.80 and $3.20.

### Is Amazon Nova Pro or gpt-oss-120b better for coding?

Amazon Nova Pro scores higher on coding benchmarks: 34.6 versus 33.2 in the Noometry coding category.

### Which has the bigger context window?

Amazon Nova Pro does, with 300K tokens against 131K.

### How many benchmarks do Amazon Nova Pro and gpt-oss-120b share?

26 benchmarks have published results for both models. Amazon Nova Pro has 38 scored results on Noometry and gpt-oss-120b has 48.