# Amazon Nova Experimental Chat 10 20 vs o3

> o3 is the stronger model overall, scoring 47.5 to 42.1 on the Noometry Index.

- Canonical page: https://noometry.com/compare/amazon-nova-experimental-chat-10-20-vs-o3
- Last updated: 2026-10-11
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. Amazon Nova Experimental Chat 10 20 scores higher in 0 categories and o3 in 8 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where o3 leads 54.6 to 38.5.

## Snapshot

| | Amazon Nova Experimental Chat 10 20 | o3 |
|---|---|---|
| Provider | Amazon | OpenAI |
| Noometry Index | 42.1 | 47.5 |
| Rank | 118 | 61 |
| Context | — | 200K |
| Input $/M | — | $2 |
| Output $/M | — | $8 |
| Weights | Proprietary | Proprietary |

## Coding

- Amazon Nova Experimental Chat 10 20: 41.6 (#123)
- o3: 46.8 (#64)

| Benchmark | Amazon Nova Experimental Chat 10 20 | o3 |
|---|---|---|
| LMArena Coding | 1412 | 1408 |
| SWE-bench Verified | — | 62.3% |
| SWE-bench Verified (bash only) | — | 58.4% |
| Aider Polyglot | — | 81.3% |
| GSO | — | 8.8% |
| WeirdML | — | 52.4% |
| CadEval | — | 74% |
| ALE-Bench | — | 933.55 |

## Agentic & Tool Use

- Amazon Nova Experimental Chat 10 20: —
- o3: 34.5 (#44)

| Benchmark | Amazon Nova Experimental Chat 10 20 | o3 |
|---|---|---|
| Berkeley Function Calling Leaderboard | — | 63% |
| GDPval | — | 30.8% |
| DeepResearch Bench | — | 45.2% |
| OSWorld | — | 23% |
| LMArena Search | — | 1144 |
| METR Time Horizons | — | 65.4% |

## Reasoning

- Amazon Nova Experimental Chat 10 20: 28.4 (#106)
- o3: 32.0 (#78)

| Benchmark | Amazon Nova Experimental Chat 10 20 | o3 |
|---|---|---|
| LMArena Hard Prompts | 1396 | 1402 |
| ARC-AGI-2 | — | 6.5% |
| SimpleBench | — | 53.1% |
| Kagi LLM Benchmark | — | 67.6% |
| ARC-AGI-1 | — | 60.8% |
| CritPt | — | 1.4% |
| Chess Puzzles | — | 38% |
| EnigmaEval | — | 13.1% |
| Mystery Game Puzzles | — | 29% |
| DTBench | — | 84.8% |
| LMCA | — | 39.7% |
| Epoch Capabilities Index | — | 146.86 |
| ForecastBench | — | 62.5 |

## Math

- Amazon Nova Experimental Chat 10 20: 39.0 (#119)
- o3: 50.2 (#58)

| Benchmark | Amazon Nova Experimental Chat 10 20 | o3 |
|---|---|---|
| LMArena Math | 1425 | 1426 |
| FrontierMath (Tiers 1-3) | — | 33.3% |
| OTIS Mock AIME 2024-2025 | — | 84.4% |
| Omni-MATH | — | 71.4% |
| MATH Level 5 | — | 97.8% |
| FrontierMath (Feb 2025 set) | — | 18.7% |
| FrontierMath Tier 4 (v1) | — | 2.1% |

## Knowledge

- Amazon Nova Experimental Chat 10 20: 38.5 (#144)
- o3: 54.6 (#52)

| Benchmark | Amazon Nova Experimental Chat 10 20 | o3 |
|---|---|---|
| LMArena Expert | 1386 | 1402 |
| GPQA Diamond | — | 81.8% |
| Humanity's Last Exam | — | 20.3% |
| SimpleQA Verified | — | 49.4% |
| MMLU-Pro | — | 85.9% |
| Confabulations | — | 14.4% |
| GPQA (HELM) | — | 75.3% |

## Multimodal

- Amazon Nova Experimental Chat 10 20: —
- o3: 41.4 (#36)

| Benchmark | Amazon Nova Experimental Chat 10 20 | o3 |
|---|---|---|
| LMArena Vision | — | 1214 |
| GeoBench | — | 74% |
| VPCT | — | 52% |

## Multilingual

- Amazon Nova Experimental Chat 10 20: 49.5 (#131)
- o3: 51.7 (#105)

| Benchmark | Amazon Nova Experimental Chat 10 20 | o3 |
|---|---|---|
| LMArena Non-English | 1372 | 1401 |
| LMArena Chinese | 1404 | 1437 |
| LMArena French | 1425 | 1430 |
| LMArena German | 1391 | 1420 |
| LMArena Japanese | 1360 | 1403 |
| LMArena Korean | 1324 | 1370 |
| LMArena Russian | 1371 | 1406 |
| LMArena Spanish | 1382 | 1395 |

## Instruction Following

- Amazon Nova Experimental Chat 10 20: 72.1 (#141)
- o3: 72.8 (#127)

| Benchmark | Amazon Nova Experimental Chat 10 20 | o3 |
|---|---|---|
| LMArena Instruction Following | 1365 | 1368 |
| IFEval | — | 86.9% |

## Long Context

- Amazon Nova Experimental Chat 10 20: 41.7 (#133)
- o3: 53.3 (#6)

| Benchmark | Amazon Nova Experimental Chat 10 20 | o3 |
|---|---|---|
| LMArena Longer Query | 1370 | 1372 |
| Fiction.LiveBench | — | 88.9% |
| CL-bench | — | 17.8% |

## Writing & Preference

- Amazon Nova Experimental Chat 10 20: 56.6 (#136)
- o3: 63.5 (#64)

| Benchmark | Amazon Nova Experimental Chat 10 20 | o3 |
|---|---|---|
| LMArena Text | 1394 | 1410 |
| LMArena Creative Writing | 1318 | 1359 |
| LMArena Multi-Turn | 1364 | 1405 |
| Short-Story Creative Writing | — | 83.9% |
| EQ-Bench Creative Writing | — | 1676 |
| WildBench | — | 86.1% |

## FAQ

### Is Amazon Nova Experimental Chat 10 20 better than o3?

o3 is the stronger model overall, scoring 47.5 to 42.1 on the Noometry Index.

### Is Amazon Nova Experimental Chat 10 20 or o3 better for coding?

o3 scores higher on coding benchmarks: 46.8 versus 41.6 in the Noometry coding category.

### How many benchmarks do Amazon Nova Experimental Chat 10 20 and o3 share?

17 benchmarks have published results for both models. Amazon Nova Experimental Chat 10 20 has 17 scored results on Noometry and o3 has 63.