# GPT-5.3 Codex vs Nova 2.0 Pro Preview

> GPT-5.3 Codex is the stronger model overall, scoring 45.8 to 33.4 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gpt-5-3-codex-vs-nova-2-0-pro-preview
- Last updated: 2026-10-11
- Shared benchmarks: 0

## Summary

- The widest gap is in agentic & tool use, where GPT-5.3 Codex leads 48.0 to 21.9.

## Snapshot

| | GPT-5.3 Codex | Nova 2.0 Pro Preview |
|---|---|---|
| Provider | OpenAI | Amazon |
| Noometry Index | 45.8 | 33.4 |
| Rank | 69 | 244 |
| Context | 400K | — |
| Input $/M | $1.75 | — |
| Output $/M | $14 | — |
| Weights | Proprietary | Proprietary |

## Coding

- GPT-5.3 Codex: 48.6 (#56)
- Nova 2.0 Pro Preview: 40.8 (#133)

| Benchmark | GPT-5.3 Codex | Nova 2.0 Pro Preview |
|---|---|---|
| SWE-bench Verified | 74.8% | — |
| LMArena WebDev | 1409 | — |
| SciCode | — | 42.7% |
| WeirdML | 79.3% | — |
| ALE-Bench | 1,655 | — |

## Agentic & Tool Use

- GPT-5.3 Codex: 48.0 (#9)
- Nova 2.0 Pro Preview: 21.9 (#136)

| Benchmark | GPT-5.3 Codex | Nova 2.0 Pro Preview |
|---|---|---|
| Terminal-Bench | 78.4% | — |
| GDP.pdf | — | 2% |
| METR Time Horizons | 74.5% | — |
| Vending-Bench 2 | 5,940 | — |

## Reasoning

- GPT-5.3 Codex: —
- Nova 2.0 Pro Preview: 22.4 (#194)

| Benchmark | GPT-5.3 Codex | Nova 2.0 Pro Preview |
|---|---|---|
| CritPt | — | 0% |
| Epoch Capabilities Index | 156.77 | — |

## FAQ

### Is GPT-5.3 Codex better than Nova 2.0 Pro Preview?

GPT-5.3 Codex is the stronger model overall, scoring 45.8 to 33.4 on the Noometry Index.

### Is GPT-5.3 Codex or Nova 2.0 Pro Preview better for coding?

GPT-5.3 Codex scores higher on coding benchmarks: 48.6 versus 40.8 in the Noometry coding category.

### How many benchmarks do GPT-5.3 Codex and Nova 2.0 Pro Preview share?

0 benchmarks have published results for both models. GPT-5.3 Codex has 8 scored results on Noometry and Nova 2.0 Pro Preview has 3.