# Chatgpt 4o Latest 20250326 vs GPT-5.3 Chat

> Chatgpt 4o Latest 20250326 is the stronger model overall, scoring 43.2 to 42.1 on the Noometry Index.

- Canonical page: https://noometry.com/compare/chatgpt-4o-vs-gpt-5-3-chat
- Last updated: 2026-10-10
- Shared benchmarks: 18

## Summary

- They share 18 benchmarks with published results for both. Chatgpt 4o Latest 20250326 scores higher in 7 categories and GPT-5.3 Chat in 1 category; 3 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Chatgpt 4o Latest 20250326 leads 32.8 to 27.3.

## Snapshot

| | Chatgpt 4o Latest 20250326 | GPT-5.3 Chat |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Noometry Index | 43.2 | 42.1 |
| Rank | 84 | 109 |
| Context | — | 128K |
| Input $/M | — | $1.75 |
| Output $/M | — | $14 |
| Weights | Proprietary | Proprietary |

## Coding

- Chatgpt 4o Latest 20250326: 41.0 (#122)
- GPT-5.3 Chat: 40.8 (#124)

| Benchmark | Chatgpt 4o Latest 20250326 | GPT-5.3 Chat |
|---|---|---|
| LMArena Coding | 1413 | 1408 |

## Reasoning

- Chatgpt 4o Latest 20250326: 32.8 (#64)
- GPT-5.3 Chat: 27.3 (#105)

| Benchmark | Chatgpt 4o Latest 20250326 | GPT-5.3 Chat |
|---|---|---|
| LMArena Hard Prompts | 1424 | 1399 |
| Kagi LLM Benchmark | 75% | — |

## Math

- Chatgpt 4o Latest 20250326: 35.8 (#134)
- GPT-5.3 Chat: 35.4 (#146)

| Benchmark | Chatgpt 4o Latest 20250326 | GPT-5.3 Chat |
|---|---|---|
| LMArena Math | 1407 | 1389 |

## Knowledge

- Chatgpt 4o Latest 20250326: 38.7 (#131)
- GPT-5.3 Chat: 38.2 (#137)

| Benchmark | Chatgpt 4o Latest 20250326 | GPT-5.3 Chat |
|---|---|---|
| LMArena Expert | 1400 | 1397 |
| Confabulations | 16.6% | — |

## Multimodal

- Chatgpt 4o Latest 20250326: 38.9 (#54)
- GPT-5.3 Chat: —

| Benchmark | Chatgpt 4o Latest 20250326 | GPT-5.3 Chat |
|---|---|---|
| LMArena Vision | 1243 | — |

## Multilingual

- Chatgpt 4o Latest 20250326: 53.1 (#72)
- GPT-5.3 Chat: 50.5 (#119)

| Benchmark | Chatgpt 4o Latest 20250326 | GPT-5.3 Chat |
|---|---|---|
| LMArena Non-English | 1419 | 1383 |
| LMArena Chinese | 1456 | 1433 |
| LMArena French | 1447 | 1398 |
| LMArena German | 1424 | 1384 |
| LMArena Japanese | 1406 | 1351 |
| LMArena Korean | 1397 | 1347 |
| LMArena Russian | 1429 | 1400 |
| LMArena Spanish | 1435 | 1371 |

## Instruction Following

- Chatgpt 4o Latest 20250326: 74.2 (#102)
- GPT-5.3 Chat: 73.0 (#124)

| Benchmark | Chatgpt 4o Latest 20250326 | GPT-5.3 Chat |
|---|---|---|
| LMArena Instruction Following | 1403 | 1378 |

## Long Context

- Chatgpt 4o Latest 20250326: 43.1 (#104)
- GPT-5.3 Chat: 42.6 (#115)

| Benchmark | Chatgpt 4o Latest 20250326 | GPT-5.3 Chat |
|---|---|---|
| LMArena Longer Query | 1413 | 1396 |

## Writing & Preference

- Chatgpt 4o Latest 20250326: 62.8 (#68)
- GPT-5.3 Chat: 63.3 (#65)

| Benchmark | Chatgpt 4o Latest 20250326 | GPT-5.3 Chat |
|---|---|---|
| LMArena Text | 1429 | 1389 |
| LMArena Creative Writing | 1406 | 1356 |
| EQ-Bench Creative Writing | 1501 | 1690 |
| LMArena Multi-Turn | 1454 | 1413 |

## FAQ

### Is Chatgpt 4o Latest 20250326 better than GPT-5.3 Chat?

Chatgpt 4o Latest 20250326 is the stronger model overall, scoring 43.2 to 42.1 on the Noometry Index.

### Is Chatgpt 4o Latest 20250326 or GPT-5.3 Chat better for coding?

They score almost the same on coding (41.0 vs 40.8); test both on your own repository before choosing.

### How many benchmarks do Chatgpt 4o Latest 20250326 and GPT-5.3 Chat share?

18 benchmarks have published results for both models. Chatgpt 4o Latest 20250326 has 21 scored results on Noometry and GPT-5.3 Chat has 18.