# Chatgpt 4o Latest 20250326 vs o3-pro

> Chatgpt 4o Latest 20250326 and o3-pro score almost the same on the Noometry Index (43.2 vs 42.7), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/chatgpt-4o-vs-o3-pro
- Last updated: 2026-10-10
- Shared benchmarks: 2

## Summary

- They share 2 benchmarks with published results for both. Chatgpt 4o Latest 20250326 scores higher in 3 categories and o3-pro in 2 categories; 5 gaps are clear of the uncertainty.
- The widest gap is in long context, where o3-pro leads 72.1 to 43.1.

## Snapshot

| | Chatgpt 4o Latest 20250326 | o3-pro |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Noometry Index | 43.2 | 42.7 |
| Rank | 84 | 94 |
| Context | — | 200K |
| Input $/M | — | $20 |
| Output $/M | — | $80 |
| Weights | Proprietary | Proprietary |

## Coding

- Chatgpt 4o Latest 20250326: 41.0 (#122)
- o3-pro: 55.1 (#22)

| Benchmark | Chatgpt 4o Latest 20250326 | o3-pro |
|---|---|---|
| Aider Polyglot | — | 84.9% |
| WeirdML | — | 58.2% |
| LMArena Coding | 1413 | — |

## Reasoning

- Chatgpt 4o Latest 20250326: 32.8 (#64)
- o3-pro: 24.1 (#152)

| Benchmark | Chatgpt 4o Latest 20250326 | o3-pro |
|---|---|---|
| Kagi LLM Benchmark | 75% | 72.1% |
| ARC-AGI-2 | — | 4.9% |
| ARC-AGI-1 | — | 59.3% |
| LMArena Hard Prompts | 1424 | — |
| DTBench | — | 86.9% |
| LMCA | — | 38.5% |
| Epoch Capabilities Index | — | 147.43 |

## Math

- Chatgpt 4o Latest 20250326: 35.8 (#134)
- o3-pro: —

| Benchmark | Chatgpt 4o Latest 20250326 | o3-pro |
|---|---|---|
| LMArena Math | 1407 | — |

## Knowledge

- Chatgpt 4o Latest 20250326: 38.7 (#131)
- o3-pro: 29.0 (#234)

| Benchmark | Chatgpt 4o Latest 20250326 | o3-pro |
|---|---|---|
| Confabulations | 16.6% | 14.2% |
| Vectara Hallucination Rate | — | 23.3% |
| LMArena Expert | 1400 | — |

## Multimodal

- Chatgpt 4o Latest 20250326: 38.9 (#54)
- o3-pro: —

| Benchmark | Chatgpt 4o Latest 20250326 | o3-pro |
|---|---|---|
| LMArena Vision | 1243 | — |

## Multilingual

- Chatgpt 4o Latest 20250326: 53.1 (#72)
- o3-pro: —

| Benchmark | Chatgpt 4o Latest 20250326 | o3-pro |
|---|---|---|
| LMArena Non-English | 1419 | — |
| LMArena Chinese | 1456 | — |
| LMArena French | 1447 | — |
| LMArena German | 1424 | — |
| LMArena Japanese | 1406 | — |
| LMArena Korean | 1397 | — |
| LMArena Russian | 1429 | — |
| LMArena Spanish | 1435 | — |

## Instruction Following

- Chatgpt 4o Latest 20250326: 74.2 (#102)
- o3-pro: —

| Benchmark | Chatgpt 4o Latest 20250326 | o3-pro |
|---|---|---|
| LMArena Instruction Following | 1403 | — |

## Long Context

- Chatgpt 4o Latest 20250326: 43.1 (#104)
- o3-pro: 72.1 (#1)

| Benchmark | Chatgpt 4o Latest 20250326 | o3-pro |
|---|---|---|
| Fiction.LiveBench | — | 97.2% |
| LMArena Longer Query | 1413 | — |

## Writing & Preference

- Chatgpt 4o Latest 20250326: 62.8 (#68)
- o3-pro: 57.1 (#128)

| Benchmark | Chatgpt 4o Latest 20250326 | o3-pro |
|---|---|---|
| LMArena Text | 1429 | — |
| LMArena Creative Writing | 1406 | — |
| Short-Story Creative Writing | — | 84.4% |
| EQ-Bench Creative Writing | 1501 | — |
| LMArena Multi-Turn | 1454 | — |

## FAQ

### Is Chatgpt 4o Latest 20250326 better than o3-pro?

Chatgpt 4o Latest 20250326 and o3-pro score almost the same on the Noometry Index (43.2 vs 42.7), so choose on price, context window or the category you care about most.

### Is Chatgpt 4o Latest 20250326 or o3-pro better for coding?

o3-pro scores higher on coding benchmarks: 55.1 versus 41.0 in the Noometry coding category.

### How many benchmarks do Chatgpt 4o Latest 20250326 and o3-pro share?

2 benchmarks have published results for both models. Chatgpt 4o Latest 20250326 has 21 scored results on Noometry and o3-pro has 12.