# GPT-5.3 Codex vs Nemotron 3 Super

> GPT-5.3 Codex is the stronger model overall, scoring 45.5 to 39.6 on the Noometry Index. Nemotron 3 Super costs 28× less per token, which makes it the better buy when GPT-5.3 Codex's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/gpt-5-3-codex-vs-nemotron-3-super
- Last updated: 2026-10-10
- Shared benchmarks: 2

## Summary

- They share 2 benchmarks with published results for both. GPT-5.3 Codex scores higher in 1 category and Nemotron 3 Super in 0 categories; one gap is clear of the uncertainty.
- The widest gap is in coding, where GPT-5.3 Codex leads 48.5 to 38.9.
- The biggest single-benchmark swing is WeirdML: 79.3% for GPT-5.3 Codex and 38% for Nemotron 3 Super.
- Nemotron 3 Super is cheaper at $0.08 / $0.45 per million input/output tokens, against $1.75 / $14 for GPT-5.3 Codex.
- GPT-5.3 Codex accepts more context: 400K tokens versus 262K.
- Nemotron 3 Super has downloadable open weights; the other is API-only.

## Snapshot

| | GPT-5.3 Codex | Nemotron 3 Super |
|---|---|---|
| Provider | OpenAI | NVIDIA |
| Noometry Index | 45.5 | 39.6 |
| Rank | 61 | 147 |
| Context | 400K | 262K |
| Input $/M | $1.75 | $0.08 |
| Output $/M | $14 | $0.45 |
| Weights | Proprietary | Open |

## Coding

- GPT-5.3 Codex: 48.5 (#51)
- Nemotron 3 Super: 38.9 (#153)

| Benchmark | GPT-5.3 Codex | Nemotron 3 Super |
|---|---|---|
| WeirdML | 79.3% | 38% |
| ALE-Bench | 1,655 | 213.9 |
| SWE-bench Verified | 74.8% | — |
| LMArena WebDev | 1408 | — |
| SciCode | — | 36% |
| LMArena Coding | — | 1403 |

## Agentic & Tool Use

- GPT-5.3 Codex: 47.8 (#9)
- Nemotron 3 Super: —

| Benchmark | GPT-5.3 Codex | Nemotron 3 Super |
|---|---|---|
| Terminal-Bench | 78.4% | — |
| METR Time Horizons | 74.5% | — |
| Vending-Bench 2 | 5,940 | — |

## Reasoning

- GPT-5.3 Codex: —
- Nemotron 3 Super: 17.9 (#274)

| Benchmark | GPT-5.3 Codex | Nemotron 3 Super |
|---|---|---|
| NYT Connections (extended) | — | 15.4% |
| CritPt | — | 3.1% |
| LMArena Hard Prompts | — | 1386 |
| Epoch Capabilities Index | 156.84 | — |

## Math

- GPT-5.3 Codex: —
- Nemotron 3 Super: 37.6 (#95)

| Benchmark | GPT-5.3 Codex | Nemotron 3 Super |
|---|---|---|
| MathArena Final-Answer Competitions | — | 60.4% |
| LMArena Math | — | 1381 |

## Knowledge

- GPT-5.3 Codex: —
- Nemotron 3 Super: 38.2 (#136)

| Benchmark | GPT-5.3 Codex | Nemotron 3 Super |
|---|---|---|
| LMArena Expert | — | 1397 |

## Multilingual

- GPT-5.3 Codex: —
- Nemotron 3 Super: 48.6 (#139)

| Benchmark | GPT-5.3 Codex | Nemotron 3 Super |
|---|---|---|
| LMArena Non-English | — | 1356 |
| LMArena Chinese | — | 1430 |
| LMArena French | — | 1404 |
| LMArena German | — | 1341 |
| LMArena Russian | — | 1336 |
| LMArena Spanish | — | 1417 |

## Instruction Following

- GPT-5.3 Codex: —
- Nemotron 3 Super: 71.4 (#149)

| Benchmark | GPT-5.3 Codex | Nemotron 3 Super |
|---|---|---|
| LMArena Instruction Following | — | 1347 |

## Long Context

- GPT-5.3 Codex: —
- Nemotron 3 Super: 41.5 (#134)

| Benchmark | GPT-5.3 Codex | Nemotron 3 Super |
|---|---|---|
| LMArena Longer Query | — | 1362 |

## Writing & Preference

- GPT-5.3 Codex: —
- Nemotron 3 Super: 56.1 (#135)

| Benchmark | GPT-5.3 Codex | Nemotron 3 Super |
|---|---|---|
| LMArena Text | — | 1378 |
| LMArena Creative Writing | — | 1317 |
| LMArena Multi-Turn | — | 1369 |

## FAQ

### Is GPT-5.3 Codex better than Nemotron 3 Super?

GPT-5.3 Codex is the stronger model overall, scoring 45.5 to 39.6 on the Noometry Index. Nemotron 3 Super costs 28× less per token, which makes it the better buy when GPT-5.3 Codex's lead doesn't matter for your workload.

### Which is cheaper, GPT-5.3 Codex or Nemotron 3 Super?

Nemotron 3 Super is cheaper. It lists at $0.08 per million input tokens and $0.45 per million output tokens; GPT-5.3 Codex lists at $1.75 and $14.

### Is GPT-5.3 Codex or Nemotron 3 Super better for coding?

GPT-5.3 Codex scores higher on coding benchmarks: 48.5 versus 38.9 in the Noometry coding category.

### Which has the bigger context window?

GPT-5.3 Codex does, with 400K tokens against 262K.

### How many benchmarks do GPT-5.3 Codex and Nemotron 3 Super share?

2 benchmarks have published results for both models. GPT-5.3 Codex has 8 scored results on Noometry and Nemotron 3 Super has 21.