# Amazon Nova Experimental Chat 12 10 vs o3-pro

> Amazon Nova Experimental Chat 12 10 and o3-pro score almost the same on the Noometry Index (42.3 vs 42.7), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/amazon-nova-experimental-chat-12-10-vs-o3-pro
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- The widest gap is in long context, where o3-pro leads 72.1 to 42.4.

## Snapshot

| | Amazon Nova Experimental Chat 12 10 | o3-pro |
|---|---|---|
| Provider | Amazon | OpenAI |
| Noometry Index | 42.3 | 42.7 |
| Rank | 104 | 94 |
| Context | — | 200K |
| Input $/M | — | $20 |
| Output $/M | — | $80 |
| Weights | Proprietary | Proprietary |

## Coding

- Amazon Nova Experimental Chat 12 10: 41.5 (#112)
- o3-pro: 55.1 (#22)

| Benchmark | Amazon Nova Experimental Chat 12 10 | o3-pro |
|---|---|---|
| Aider Polyglot | — | 84.9% |
| WeirdML | — | 58.2% |
| LMArena Coding | 1430 | — |

## Reasoning

- Amazon Nova Experimental Chat 12 10: 28.1 (#93)
- o3-pro: 24.1 (#152)

| Benchmark | Amazon Nova Experimental Chat 12 10 | o3-pro |
|---|---|---|
| ARC-AGI-2 | — | 4.9% |
| Kagi LLM Benchmark | — | 72.1% |
| ARC-AGI-1 | — | 59.3% |
| LMArena Hard Prompts | 1427 | — |
| DTBench | — | 86.9% |
| LMCA | — | 38.5% |
| Epoch Capabilities Index | — | 147.43 |

## Math

- Amazon Nova Experimental Chat 12 10: 36.1 (#130)
- o3-pro: —

| Benchmark | Amazon Nova Experimental Chat 12 10 | o3-pro |
|---|---|---|
| LMArena Math | 1418 | — |

## Knowledge

- Amazon Nova Experimental Chat 12 10: 38.6 (#133)
- o3-pro: 29.0 (#234)

| Benchmark | Amazon Nova Experimental Chat 12 10 | o3-pro |
|---|---|---|
| Confabulations | — | 14.2% |
| Vectara Hallucination Rate | — | 23.3% |
| LMArena Expert | 1409 | — |

## Multilingual

- Amazon Nova Experimental Chat 12 10: 51.7 (#103)
- o3-pro: —

| Benchmark | Amazon Nova Experimental Chat 12 10 | o3-pro |
|---|---|---|
| LMArena Non-English | 1399 | — |
| LMArena Chinese | 1440 | — |
| LMArena Russian | 1397 | — |

## Instruction Following

- Amazon Nova Experimental Chat 12 10: 73.4 (#117)
- o3-pro: —

| Benchmark | Amazon Nova Experimental Chat 12 10 | o3-pro |
|---|---|---|
| LMArena Instruction Following | 1387 | — |

## Long Context

- Amazon Nova Experimental Chat 12 10: 42.4 (#120)
- o3-pro: 72.1 (#1)

| Benchmark | Amazon Nova Experimental Chat 12 10 | o3-pro |
|---|---|---|
| Fiction.LiveBench | — | 97.2% |
| LMArena Longer Query | 1391 | — |

## Writing & Preference

- Amazon Nova Experimental Chat 12 10: 59.7 (#104)
- o3-pro: 57.1 (#128)

| Benchmark | Amazon Nova Experimental Chat 12 10 | o3-pro |
|---|---|---|
| LMArena Text | 1420 | — |
| LMArena Creative Writing | 1351 | — |
| Short-Story Creative Writing | — | 84.4% |
| LMArena Multi-Turn | 1409 | — |

## FAQ

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

Amazon Nova Experimental Chat 12 10 and o3-pro score almost the same on the Noometry Index (42.3 vs 42.7), so choose on price, context window or the category you care about most.

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

o3-pro scores higher on coding benchmarks: 55.1 versus 41.5 in the Noometry coding category.

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

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