# Amazon Nova Experimental Chat 10 09 vs o3-pro

> o3-pro is the stronger model overall, scoring 42.7 to 41.4 on the Noometry Index.

- Canonical page: https://noometry.com/compare/amazon-nova-experimental-chat-10-09-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 40.6.

## Snapshot

| | Amazon Nova Experimental Chat 10 09 | o3-pro |
|---|---|---|
| Provider | Amazon | OpenAI |
| Noometry Index | 41.4 | 42.7 |
| Rank | 124 | 94 |
| Context | — | 200K |
| Input $/M | — | $20 |
| Output $/M | — | $80 |
| Weights | Proprietary | Proprietary |

## Coding

- Amazon Nova Experimental Chat 10 09: 39.6 (#142)
- o3-pro: 55.1 (#22)

| Benchmark | Amazon Nova Experimental Chat 10 09 | o3-pro |
|---|---|---|
| Aider Polyglot | — | 84.9% |
| WeirdML | — | 58.2% |
| LMArena Coding | 1371 | — |

## Reasoning

- Amazon Nova Experimental Chat 10 09: 26.2 (#122)
- o3-pro: 24.1 (#152)

| Benchmark | Amazon Nova Experimental Chat 10 09 | o3-pro |
|---|---|---|
| ARC-AGI-2 | — | 4.9% |
| Kagi LLM Benchmark | — | 72.1% |
| ARC-AGI-1 | — | 59.3% |
| LMArena Hard Prompts | 1356 | — |
| DTBench | — | 86.9% |
| LMCA | — | 38.5% |
| Epoch Capabilities Index | — | 147.43 |

## Knowledge

- Amazon Nova Experimental Chat 10 09: —
- o3-pro: 29.0 (#234)

| Benchmark | Amazon Nova Experimental Chat 10 09 | o3-pro |
|---|---|---|
| Confabulations | — | 14.2% |
| Vectara Hallucination Rate | — | 23.3% |

## Multilingual

- Amazon Nova Experimental Chat 10 09: 47.5 (#145)
- o3-pro: —

| Benchmark | Amazon Nova Experimental Chat 10 09 | o3-pro |
|---|---|---|
| LMArena Non-English | 1341 | — |
| LMArena Chinese | 1345 | — |

## Instruction Following

- Amazon Nova Experimental Chat 10 09: 69.7 (#167)
- o3-pro: —

| Benchmark | Amazon Nova Experimental Chat 10 09 | o3-pro |
|---|---|---|
| LMArena Instruction Following | 1316 | — |

## Long Context

- Amazon Nova Experimental Chat 10 09: 40.6 (#146)
- o3-pro: 72.1 (#1)

| Benchmark | Amazon Nova Experimental Chat 10 09 | o3-pro |
|---|---|---|
| Fiction.LiveBench | — | 97.2% |
| LMArena Longer Query | 1334 | — |

## Writing & Preference

- Amazon Nova Experimental Chat 10 09: 55.0 (#144)
- o3-pro: 57.1 (#128)

| Benchmark | Amazon Nova Experimental Chat 10 09 | o3-pro |
|---|---|---|
| LMArena Text | 1365 | — |
| LMArena Creative Writing | 1307 | — |
| Short-Story Creative Writing | — | 84.4% |
| LMArena Multi-Turn | 1354 | — |

## FAQ

### Is Amazon Nova Experimental Chat 10 09 better than o3-pro?

o3-pro is the stronger model overall, scoring 42.7 to 41.4 on the Noometry Index.

### Is Amazon Nova Experimental Chat 10 09 or o3-pro better for coding?

o3-pro scores higher on coding benchmarks: 55.1 versus 39.6 in the Noometry coding category.

### How many benchmarks do Amazon Nova Experimental Chat 10 09 and o3-pro share?

0 benchmarks have published results for both models. Amazon Nova Experimental Chat 10 09 has 9 scored results on Noometry and o3-pro has 12.