# Amazon Nova Experimental Chat 11 10 vs GPT-5.1-Codex

> Amazon Nova Experimental Chat 11 10 is the stronger model overall, scoring 43.0 to 38.6 on the Noometry Index.

- Canonical page: https://noometry.com/compare/amazon-nova-experimental-chat-11-10-vs-gpt-5-1-codex
- Last updated: 2026-10-12
- Shared benchmarks: 0

## Summary

- The widest gap is in math, where Amazon Nova Experimental Chat 11 10 leads 39.1 to 30.3.

## Snapshot

| | Amazon Nova Experimental Chat 11 10 | GPT-5.1-Codex |
|---|---|---|
| Provider | Amazon | OpenAI |
| Noometry Index | 43.0 | 38.6 |
| Rank | 101 | 186 |
| Context | — | 400K |
| Input $/M | — | $1.25 |
| Output $/M | — | $10 |
| Weights | Proprietary | Proprietary |

## Coding

- Amazon Nova Experimental Chat 11 10: 42.3 (#107)
- GPT-5.1-Codex: 41.9 (#116)

| Benchmark | Amazon Nova Experimental Chat 11 10 | GPT-5.1-Codex |
|---|---|---|
| SWE-bench Verified (bash only) | — | 66% |
| LMArena WebDev | — | 1337 |
| LMArena Coding | 1433 | — |
| ALE-Bench | — | 1,245 |

## Agentic & Tool Use

- Amazon Nova Experimental Chat 11 10: —
- GPT-5.1-Codex: 38.0 (#33)

| Benchmark | Amazon Nova Experimental Chat 11 10 | GPT-5.1-Codex |
|---|---|---|
| Terminal-Bench | — | 60.4% |
| METR Time Horizons | — | 70.8% |

## Reasoning

- Amazon Nova Experimental Chat 11 10: 29.1 (#95)
- GPT-5.1-Codex: —

| Benchmark | Amazon Nova Experimental Chat 11 10 | GPT-5.1-Codex |
|---|---|---|
| LMArena Hard Prompts | 1422 | — |

## Math

- Amazon Nova Experimental Chat 11 10: 39.1 (#114)
- GPT-5.1-Codex: 30.3 (#235)

| Benchmark | Amazon Nova Experimental Chat 11 10 | GPT-5.1-Codex |
|---|---|---|
| ProofBench | — | 9% |
| LMArena Math | 1431 | — |

## Knowledge

- Amazon Nova Experimental Chat 11 10: 39.9 (#127)
- GPT-5.1-Codex: —

| Benchmark | Amazon Nova Experimental Chat 11 10 | GPT-5.1-Codex |
|---|---|---|
| LMArena Expert | 1431 | — |

## Multilingual

- Amazon Nova Experimental Chat 11 10: 51.9 (#98)
- GPT-5.1-Codex: —

| Benchmark | Amazon Nova Experimental Chat 11 10 | GPT-5.1-Codex |
|---|---|---|
| LMArena Non-English | 1405 | — |
| LMArena Chinese | 1463 | — |
| LMArena French | 1449 | — |
| LMArena German | 1395 | — |
| LMArena Japanese | 1383 | — |
| LMArena Korean | 1384 | — |
| LMArena Russian | 1394 | — |
| LMArena Spanish | 1444 | — |

## Instruction Following

- Amazon Nova Experimental Chat 11 10: 73.2 (#122)
- GPT-5.1-Codex: —

| Benchmark | Amazon Nova Experimental Chat 11 10 | GPT-5.1-Codex |
|---|---|---|
| LMArena Instruction Following | 1387 | — |

## Long Context

- Amazon Nova Experimental Chat 11 10: 42.5 (#121)
- GPT-5.1-Codex: —

| Benchmark | Amazon Nova Experimental Chat 11 10 | GPT-5.1-Codex |
|---|---|---|
| LMArena Longer Query | 1395 | — |

## Writing & Preference

- Amazon Nova Experimental Chat 11 10: 58.8 (#114)
- GPT-5.1-Codex: —

| Benchmark | Amazon Nova Experimental Chat 11 10 | GPT-5.1-Codex |
|---|---|---|
| LMArena Text | 1415 | — |
| LMArena Creative Writing | 1349 | — |
| LMArena Multi-Turn | 1380 | — |

## FAQ

### Is Amazon Nova Experimental Chat 11 10 better than GPT-5.1-Codex?

Amazon Nova Experimental Chat 11 10 is the stronger model overall, scoring 43.0 to 38.6 on the Noometry Index.

### Is Amazon Nova Experimental Chat 11 10 or GPT-5.1-Codex better for coding?

They score almost the same on coding (42.3 vs 41.9); test both on your own repository before choosing.

### How many benchmarks do Amazon Nova Experimental Chat 11 10 and GPT-5.1-Codex share?

0 benchmarks have published results for both models. Amazon Nova Experimental Chat 11 10 has 17 scored results on Noometry and GPT-5.1-Codex has 6.