# GPT-5.3 Chat vs Mistral

> GPT-5.3 Chat is the stronger model overall, scoring 42.8 to 29.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gpt-5-3-chat-vs-mistral
- Last updated: 2026-10-11
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. GPT-5.3 Chat scores higher in 8 categories and Mistral in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where GPT-5.3 Chat leads 63.1 to 37.0.

## Snapshot

| | GPT-5.3 Chat | Mistral |
|---|---|---|
| Provider | OpenAI | Mistral AI |
| Noometry Index | 42.8 | 29.9 |
| Rank | 109 | 303 |
| Context | 128K | — |
| Input $/M | $1.75 | — |
| Output $/M | $14 | — |
| Weights | Proprietary | Proprietary |

## Coding

- GPT-5.3 Chat: 41.4 (#124)
- Mistral: 33.8 (#250)

| Benchmark | GPT-5.3 Chat | Mistral |
|---|---|---|
| LMArena Coding | 1408 | 1162 |

## Reasoning

- GPT-5.3 Chat: 28.5 (#102)
- Mistral: 22.2 (#200)

| Benchmark | GPT-5.3 Chat | Mistral |
|---|---|---|
| LMArena Hard Prompts | 1399 | 1149 |

## Math

- GPT-5.3 Chat: 38.2 (#142)
- Mistral: 22.3 (#278)

| Benchmark | GPT-5.3 Chat | Mistral |
|---|---|---|
| LMArena Math | 1389 | 1180 |
| Omni-MATH | — | 7.2% |

## Knowledge

- GPT-5.3 Chat: 38.8 (#140)
- Mistral: 16.6 (#288)

| Benchmark | GPT-5.3 Chat | Mistral |
|---|---|---|
| LMArena Expert | 1397 | 1125 |
| MMLU-Pro | — | 27.7% |
| GPQA (HELM) | — | 30.3% |

## Multilingual

- GPT-5.3 Chat: 50.3 (#124)
- Mistral: 32.8 (#254)

| Benchmark | GPT-5.3 Chat | Mistral |
|---|---|---|
| LMArena Non-English | 1382 | 1129 |
| LMArena Chinese | 1432 | 1109 |
| LMArena French | 1397 | 1180 |
| LMArena German | 1384 | 1155 |
| LMArena Japanese | 1352 | 1013 |
| LMArena Korean | 1346 | 1032 |
| LMArena Russian | 1400 | 1168 |
| LMArena Spanish | 1371 | 1143 |

## Instruction Following

- GPT-5.3 Chat: 72.8 (#129)
- Mistral: 52.6 (#288)

| Benchmark | GPT-5.3 Chat | Mistral |
|---|---|---|
| LMArena Instruction Following | 1378 | 1152 |
| IFEval | — | 56.8% |

## Long Context

- GPT-5.3 Chat: 42.6 (#120)
- Mistral: 35.0 (#245)

| Benchmark | GPT-5.3 Chat | Mistral |
|---|---|---|
| LMArena Longer Query | 1396 | 1153 |

## Writing & Preference

- GPT-5.3 Chat: 63.1 (#68)
- Mistral: 37.0 (#260)

| Benchmark | GPT-5.3 Chat | Mistral |
|---|---|---|
| LMArena Text | 1389 | 1165 |
| LMArena Creative Writing | 1355 | 1158 |
| LMArena Multi-Turn | 1412 | 1147 |
| EQ-Bench Creative Writing | 1690 | — |
| WildBench | — | 66% |

## FAQ

### Is GPT-5.3 Chat better than Mistral?

GPT-5.3 Chat is the stronger model overall, scoring 42.8 to 29.9 on the Noometry Index.

### Is GPT-5.3 Chat or Mistral better for coding?

GPT-5.3 Chat scores higher on coding benchmarks: 41.4 versus 33.8 in the Noometry coding category.

### How many benchmarks do GPT-5.3 Chat and Mistral share?

17 benchmarks have published results for both models. GPT-5.3 Chat has 18 scored results on Noometry and Mistral has 22.