# Amazon Nova Experimental Chat 10 09 vs GPT-5.3 Chat

> Amazon Nova Experimental Chat 10 09 and GPT-5.3 Chat score almost the same on the Noometry Index (41.9 vs 42.8), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/amazon-nova-experimental-chat-10-09-vs-gpt-5-3-chat
- Last updated: 2026-10-10
- Shared benchmarks: 9

## Summary

- They share 9 benchmarks with published results for both. Amazon Nova Experimental Chat 10 09 scores higher in 0 categories and GPT-5.3 Chat in 6 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where GPT-5.3 Chat leads 63.1 to 54.7.

## Snapshot

| | Amazon Nova Experimental Chat 10 09 | GPT-5.3 Chat |
|---|---|---|
| Provider | Amazon | OpenAI |
| Noometry Index | 41.9 | 42.8 |
| Rank | 126 | 109 |
| Context | — | 128K |
| Input $/M | — | $1.75 |
| Output $/M | — | $14 |
| Weights | Proprietary | Proprietary |

## Coding

- Amazon Nova Experimental Chat 10 09: 40.2 (#145)
- GPT-5.3 Chat: 41.4 (#124)

| Benchmark | Amazon Nova Experimental Chat 10 09 | GPT-5.3 Chat |
|---|---|---|
| LMArena Coding | 1370 | 1408 |

## Reasoning

- Amazon Nova Experimental Chat 10 09: 27.3 (#120)
- GPT-5.3 Chat: 28.5 (#102)

| Benchmark | Amazon Nova Experimental Chat 10 09 | GPT-5.3 Chat |
|---|---|---|
| LMArena Hard Prompts | 1356 | 1399 |

## Math

- Amazon Nova Experimental Chat 10 09: —
- GPT-5.3 Chat: 38.2 (#142)

| Benchmark | Amazon Nova Experimental Chat 10 09 | GPT-5.3 Chat |
|---|---|---|
| LMArena Math | — | 1389 |

## Knowledge

- Amazon Nova Experimental Chat 10 09: —
- GPT-5.3 Chat: 38.8 (#140)

| Benchmark | Amazon Nova Experimental Chat 10 09 | GPT-5.3 Chat |
|---|---|---|
| LMArena Expert | — | 1397 |

## Multilingual

- Amazon Nova Experimental Chat 10 09: 47.3 (#150)
- GPT-5.3 Chat: 50.3 (#124)

| Benchmark | Amazon Nova Experimental Chat 10 09 | GPT-5.3 Chat |
|---|---|---|
| LMArena Non-English | 1340 | 1382 |
| LMArena Chinese | 1341 | 1432 |
| LMArena French | — | 1397 |
| LMArena German | — | 1384 |
| LMArena Japanese | — | 1352 |
| LMArena Korean | — | 1346 |
| LMArena Russian | — | 1400 |
| LMArena Spanish | — | 1371 |

## Instruction Following

- Amazon Nova Experimental Chat 10 09: 69.4 (#172)
- GPT-5.3 Chat: 72.8 (#129)

| Benchmark | Amazon Nova Experimental Chat 10 09 | GPT-5.3 Chat |
|---|---|---|
| LMArena Instruction Following | 1315 | 1378 |

## Long Context

- Amazon Nova Experimental Chat 10 09: 40.5 (#152)
- GPT-5.3 Chat: 42.6 (#120)

| Benchmark | Amazon Nova Experimental Chat 10 09 | GPT-5.3 Chat |
|---|---|---|
| LMArena Longer Query | 1333 | 1396 |

## Writing & Preference

- Amazon Nova Experimental Chat 10 09: 54.7 (#149)
- GPT-5.3 Chat: 63.1 (#68)

| Benchmark | Amazon Nova Experimental Chat 10 09 | GPT-5.3 Chat |
|---|---|---|
| LMArena Text | 1364 | 1389 |
| LMArena Creative Writing | 1307 | 1355 |
| LMArena Multi-Turn | 1355 | 1412 |
| EQ-Bench Creative Writing | — | 1690 |

## FAQ

### Is Amazon Nova Experimental Chat 10 09 better than GPT-5.3 Chat?

Amazon Nova Experimental Chat 10 09 and GPT-5.3 Chat score almost the same on the Noometry Index (41.9 vs 42.8), so choose on price, context window or the category you care about most.

### Is Amazon Nova Experimental Chat 10 09 or GPT-5.3 Chat better for coding?

GPT-5.3 Chat scores higher on coding benchmarks: 41.4 versus 40.2 in the Noometry coding category.

### How many benchmarks do Amazon Nova Experimental Chat 10 09 and GPT-5.3 Chat share?

9 benchmarks have published results for both models. Amazon Nova Experimental Chat 10 09 has 9 scored results on Noometry and GPT-5.3 Chat has 18.