# GPT-5.3 Codex vs Pixtral Large

> GPT-5.3 Codex is the stronger model overall, scoring 45.5 to 31.7 on the Noometry Index. Pixtral Large costs 1.6× 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-pixtral-large
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- Pixtral Large is cheaper at $2 / $6 per million input/output tokens, against $1.75 / $14 for GPT-5.3 Codex.
- GPT-5.3 Codex accepts more context: 400K tokens versus 128K.
- Pixtral Large has downloadable open weights; the other is API-only.

## Snapshot

| | GPT-5.3 Codex | Pixtral Large |
|---|---|---|
| Provider | OpenAI | Mistral AI |
| Noometry Index | 45.5 | 31.7 |
| Rank | 61 | 257 |
| Context | 400K | 128K |
| Input $/M | $1.75 | $2 |
| Output $/M | $14 | $6 |
| Weights | Proprietary | Open |

## Coding

- GPT-5.3 Codex: 48.5 (#51)
- Pixtral Large: —

| Benchmark | GPT-5.3 Codex | Pixtral Large |
|---|---|---|
| SWE-bench Verified | 74.8% | — |
| LMArena WebDev | 1408 | — |
| WeirdML | 79.3% | — |
| ALE-Bench | 1,655 | — |

## Agentic & Tool Use

- GPT-5.3 Codex: 47.8 (#9)
- Pixtral Large: —

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

## Reasoning

- GPT-5.3 Codex: —
- Pixtral Large: 20.9 (#208)

| Benchmark | GPT-5.3 Codex | Pixtral Large |
|---|---|---|
| EnigmaEval | — | 0.8% |
| Epoch Capabilities Index | 156.84 | — |

## Multimodal

- GPT-5.3 Codex: —
- Pixtral Large: 30.0 (#105)

| Benchmark | GPT-5.3 Codex | Pixtral Large |
|---|---|---|
| LMArena Vision | — | 1089 |

## Writing & Preference

- GPT-5.3 Codex: —
- Pixtral Large: 32.9 (#273)

| Benchmark | GPT-5.3 Codex | Pixtral Large |
|---|---|---|
| EQ-Bench Creative Writing | — | 988 |

## FAQ

### Is GPT-5.3 Codex better than Pixtral Large?

GPT-5.3 Codex is the stronger model overall, scoring 45.5 to 31.7 on the Noometry Index. Pixtral Large costs 1.6× 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 Pixtral Large?

Pixtral Large is cheaper. It lists at $2 per million input tokens and $6 per million output tokens; GPT-5.3 Codex lists at $1.75 and $14.

### Which has the bigger context window?

GPT-5.3 Codex does, with 400K tokens against 128K.

### How many benchmarks do GPT-5.3 Codex and Pixtral Large share?

0 benchmarks have published results for both models. GPT-5.3 Codex has 8 scored results on Noometry and Pixtral Large has 3.