# Amazon Nova Experimental Chat 12 10 vs o3

> o3 is the stronger model overall, scoring 47.5 to 42.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/amazon-nova-experimental-chat-12-10-vs-o3
- Last updated: 2026-10-11
- Shared benchmarks: 12

## Summary

- They share 12 benchmarks with published results for both. Amazon Nova Experimental Chat 12 10 scores higher in 1 category and o3 in 7 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where o3 leads 54.6 to 39.2.

## Snapshot

| | Amazon Nova Experimental Chat 12 10 | o3 |
|---|---|---|
| Provider | Amazon | OpenAI |
| Noometry Index | 42.9 | 47.5 |
| Rank | 104 | 61 |
| Context | — | 200K |
| Input $/M | — | $2 |
| Output $/M | — | $8 |
| Weights | Proprietary | Proprietary |

## Coding

- Amazon Nova Experimental Chat 12 10: 42.2 (#110)
- o3: 46.8 (#64)

| Benchmark | Amazon Nova Experimental Chat 12 10 | o3 |
|---|---|---|
| LMArena Coding | 1430 | 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 12 10: —
- o3: 34.5 (#44)

| Benchmark | Amazon Nova Experimental Chat 12 10 | 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 12 10: 29.3 (#94)
- o3: 32.0 (#78)

| Benchmark | Amazon Nova Experimental Chat 12 10 | o3 |
|---|---|---|
| LMArena Hard Prompts | 1427 | 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 12 10: 38.9 (#124)
- o3: 50.2 (#58)

| Benchmark | Amazon Nova Experimental Chat 12 10 | o3 |
|---|---|---|
| LMArena Math | 1419 | 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 12 10: 39.2 (#136)
- o3: 54.6 (#52)

| Benchmark | Amazon Nova Experimental Chat 12 10 | o3 |
|---|---|---|
| LMArena Expert | 1408 | 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 12 10: —
- o3: 41.4 (#36)

| Benchmark | Amazon Nova Experimental Chat 12 10 | o3 |
|---|---|---|
| LMArena Vision | — | 1214 |
| GeoBench | — | 74% |
| VPCT | — | 52% |

## Multilingual

- Amazon Nova Experimental Chat 12 10: 51.4 (#108)
- o3: 51.7 (#105)

| Benchmark | Amazon Nova Experimental Chat 12 10 | o3 |
|---|---|---|
| LMArena Non-English | 1398 | 1401 |
| LMArena Chinese | 1440 | 1437 |
| LMArena Russian | 1395 | 1406 |
| LMArena French | — | 1430 |
| LMArena German | — | 1420 |
| LMArena Japanese | — | 1403 |
| LMArena Korean | — | 1370 |
| LMArena Spanish | — | 1395 |

## Instruction Following

- Amazon Nova Experimental Chat 12 10: 73.2 (#123)
- o3: 72.8 (#127)

| Benchmark | Amazon Nova Experimental Chat 12 10 | o3 |
|---|---|---|
| LMArena Instruction Following | 1387 | 1368 |
| IFEval | — | 86.9% |

## Long Context

- Amazon Nova Experimental Chat 12 10: 42.4 (#125)
- o3: 53.3 (#6)

| Benchmark | Amazon Nova Experimental Chat 12 10 | o3 |
|---|---|---|
| LMArena Longer Query | 1391 | 1372 |
| Fiction.LiveBench | — | 88.9% |
| CL-bench | — | 17.8% |

## Writing & Preference

- Amazon Nova Experimental Chat 12 10: 59.5 (#110)
- o3: 63.5 (#64)

| Benchmark | Amazon Nova Experimental Chat 12 10 | o3 |
|---|---|---|
| LMArena Text | 1420 | 1410 |
| LMArena Creative Writing | 1350 | 1359 |
| LMArena Multi-Turn | 1409 | 1405 |
| Short-Story Creative Writing | — | 83.9% |
| EQ-Bench Creative Writing | — | 1676 |
| WildBench | — | 86.1% |

## FAQ

### Is Amazon Nova Experimental Chat 12 10 better than o3?

o3 is the stronger model overall, scoring 47.5 to 42.9 on the Noometry Index.

### Is Amazon Nova Experimental Chat 12 10 or o3 better for coding?

o3 scores higher on coding benchmarks: 46.8 versus 42.2 in the Noometry coding category.

### How many benchmarks do Amazon Nova Experimental Chat 12 10 and o3 share?

12 benchmarks have published results for both models. Amazon Nova Experimental Chat 12 10 has 12 scored results on Noometry and o3 has 63.