# Amazon Nova Lite vs GPT-5.1-Codex

> GPT-5.1-Codex is the stronger model overall, scoring 38.2 to 31.4 on the Noometry Index. Amazon Nova Lite costs 33× less per token, which makes it the better buy when GPT-5.1-Codex's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/amazon-nova-lite-vs-gpt-5-1-codex
- Last updated: 2026-10-10
- Shared benchmarks: 1

## Summary

- They share 1 benchmark with published results for both. Amazon Nova Lite scores higher in 0 categories and GPT-5.1-Codex in 2 categories; 2 gaps are clear of the uncertainty.
- The widest gap is in coding, where GPT-5.1-Codex leads 41.7 to 32.0.
- Amazon Nova Lite is cheaper at $0.06 / $0.24 per million input/output tokens, against $1.25 / $10 for GPT-5.1-Codex.
- GPT-5.1-Codex accepts more context: 400K tokens versus 300K.

## Snapshot

| | Amazon Nova Lite | GPT-5.1-Codex |
|---|---|---|
| Provider | Amazon | OpenAI |
| Noometry Index | 31.4 | 38.2 |
| Rank | 262 | 178 |
| Context | 300K | 400K |
| Input $/M | $0.06 | $1.25 |
| Output $/M | $0.24 | $10 |
| Weights | Proprietary | Proprietary |

## Coding

- Amazon Nova Lite: 32.0 (#266)
- GPT-5.1-Codex: 41.7 (#107)

| Benchmark | Amazon Nova Lite | GPT-5.1-Codex |
|---|---|---|
| ALE-Bench | 236.25 | 1,245 |
| SWE-bench Verified (bash only) | — | 66% |
| LMArena WebDev | — | 1337 |
| LiveBench Coding | 27.5% | — |
| LMArena Coding | 1239 | — |

## Agentic & Tool Use

- Amazon Nova Lite: —
- GPT-5.1-Codex: 37.8 (#32)

| Benchmark | Amazon Nova Lite | GPT-5.1-Codex |
|---|---|---|
| Terminal-Bench | — | 60.4% |
| METR Time Horizons | — | 70.8% |

## Reasoning

- Amazon Nova Lite: 18.5 (#257)
- GPT-5.1-Codex: —

| Benchmark | Amazon Nova Lite | GPT-5.1-Codex |
|---|---|---|
| LiveBench Reasoning | 36.7% | — |
| LMArena Hard Prompts | 1220 | — |
| LiveBench Data Analysis | 37.2% | — |
| LiveBench | 36.4% | — |

## Math

- Amazon Nova Lite: 25.8 (#243)
- GPT-5.1-Codex: 29.3 (#218)

| Benchmark | Amazon Nova Lite | GPT-5.1-Codex |
|---|---|---|
| ProofBench | — | 9% |
| Omni-MATH | 23.3% | — |
| LiveBench Math | 36.7% | — |
| LMArena Math | 1227 | — |

## Knowledge

- Amazon Nova Lite: 26.0 (#254)
- GPT-5.1-Codex: —

| Benchmark | Amazon Nova Lite | GPT-5.1-Codex |
|---|---|---|
| Humanity's Last Exam | 3.6% | — |
| MMLU-Pro | 60% | — |
| Vectara Hallucination Rate | 6.1% | — |
| GPQA (HELM) | 39.7% | — |
| LMArena Expert | 1201 | — |
| MMLU | 77% | — |

## Multimodal

- Amazon Nova Lite: 25.0 (#118)
- GPT-5.1-Codex: —

| Benchmark | Amazon Nova Lite | GPT-5.1-Codex |
|---|---|---|
| LMArena Vision | 990 | — |

## Multilingual

- Amazon Nova Lite: 38.2 (#227)
- GPT-5.1-Codex: —

| Benchmark | Amazon Nova Lite | GPT-5.1-Codex |
|---|---|---|
| LMArena Non-English | 1208 | — |
| LMArena Chinese | 1225 | — |
| LMArena French | 1237 | — |
| LMArena German | 1229 | — |
| LMArena Japanese | 1153 | — |
| LMArena Korean | 1153 | — |
| LMArena Russian | 1216 | — |
| LMArena Spanish | 1225 | — |

## Instruction Following

- Amazon Nova Lite: 59.6 (#250)
- GPT-5.1-Codex: —

| Benchmark | Amazon Nova Lite | GPT-5.1-Codex |
|---|---|---|
| LiveBench Instruction Following | 54.1% | — |
| IFEval | 77.6% | — |
| LMArena Instruction Following | 1205 | — |

## Long Context

- Amazon Nova Lite: 37.4 (#212)
- GPT-5.1-Codex: —

| Benchmark | Amazon Nova Lite | GPT-5.1-Codex |
|---|---|---|
| LMArena Longer Query | 1234 | — |

## Writing & Preference

- Amazon Nova Lite: 42.3 (#232)
- GPT-5.1-Codex: —

| Benchmark | Amazon Nova Lite | GPT-5.1-Codex |
|---|---|---|
| LMArena Text | 1229 | — |
| LMArena Creative Writing | 1197 | — |
| WildBench | 75% | — |
| LMArena Multi-Turn | 1199 | — |
| LiveBench Language | 25.9% | — |

## FAQ

### Is Amazon Nova Lite better than GPT-5.1-Codex?

GPT-5.1-Codex is the stronger model overall, scoring 38.2 to 31.4 on the Noometry Index. Amazon Nova Lite costs 33× less per token, which makes it the better buy when GPT-5.1-Codex's lead doesn't matter for your workload.

### Which is cheaper, Amazon Nova Lite or GPT-5.1-Codex?

Amazon Nova Lite is cheaper. It lists at $0.06 per million input tokens and $0.24 per million output tokens; GPT-5.1-Codex lists at $1.25 and $10.

### Is Amazon Nova Lite or GPT-5.1-Codex better for coding?

GPT-5.1-Codex scores higher on coding benchmarks: 41.7 versus 32.0 in the Noometry coding category.

### Which has the bigger context window?

GPT-5.1-Codex does, with 400K tokens against 300K.

### How many benchmarks do Amazon Nova Lite and GPT-5.1-Codex share?

1 benchmark has published results for both models. Amazon Nova Lite has 34 scored results on Noometry and GPT-5.1-Codex has 6.