# Chatgpt 4o Latest 20250326 vs GLM-4.5

> Chatgpt 4o Latest 20250326 is the stronger model overall, scoring 43.8 to 42.0 on the Noometry Index.

- Canonical page: https://noometry.com/compare/chatgpt-4o-vs-glm-4-5
- Last updated: 2026-10-10
- Shared benchmarks: 20

## Summary

- They share 20 benchmarks with published results for both. Chatgpt 4o Latest 20250326 scores higher in 6 categories and GLM-4.5 in 2 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Chatgpt 4o Latest 20250326 leads 33.8 to 28.6.
- The biggest single-benchmark swing is Kagi LLM Benchmark: 75% for Chatgpt 4o Latest 20250326 and 57.9% for GLM-4.5.
- GLM-4.5 has downloadable open weights; the other is API-only.

## Snapshot

| | Chatgpt 4o Latest 20250326 | GLM-4.5 |
|---|---|---|
| Provider | OpenAI | Z.ai (Zhipu) |
| Noometry Index | 43.8 | 42.0 |
| Rank | 82 | 122 |
| Context | — | 131K |
| Input $/M | — | $0.60 |
| Output $/M | — | $2.20 |
| Weights | Proprietary | Open |

## Coding

- Chatgpt 4o Latest 20250326: 41.6 (#122)
- GLM-4.5: 41.4 (#125)

| Benchmark | Chatgpt 4o Latest 20250326 | GLM-4.5 |
|---|---|---|
| LMArena Coding | 1413 | 1434 |
| SWE-bench Verified (bash only) | — | 54.2% |
| WeirdML | — | 40.6% |
| ALE-Bench | — | 344.82 |
| AlgoTune | — | 1.52 |

## Reasoning

- Chatgpt 4o Latest 20250326: 33.8 (#71)
- GLM-4.5: 28.6 (#100)

| Benchmark | Chatgpt 4o Latest 20250326 | GLM-4.5 |
|---|---|---|
| Kagi LLM Benchmark | 75% | 57.9% |
| LMArena Hard Prompts | 1424 | 1429 |

## Math

- Chatgpt 4o Latest 20250326: 38.6 (#134)
- GLM-4.5: 39.0 (#116)

| Benchmark | Chatgpt 4o Latest 20250326 | GLM-4.5 |
|---|---|---|
| LMArena Math | 1407 | 1427 |

## Knowledge

- Chatgpt 4o Latest 20250326: 39.2 (#137)
- GLM-4.5: 35.9 (#179)

| Benchmark | Chatgpt 4o Latest 20250326 | GLM-4.5 |
|---|---|---|
| Confabulations | 16.6% | 11.3% |
| LMArena Expert | 1401 | 1433 |
| Humanity's Last Exam | — | 8.3% |

## Multimodal

- Chatgpt 4o Latest 20250326: 39.6 (#58)
- GLM-4.5: —

| Benchmark | Chatgpt 4o Latest 20250326 | GLM-4.5 |
|---|---|---|
| LMArena Vision | 1243 | — |

## Multilingual

- Chatgpt 4o Latest 20250326: 52.9 (#76)
- GLM-4.5: 52.8 (#77)

| Benchmark | Chatgpt 4o Latest 20250326 | GLM-4.5 |
|---|---|---|
| LMArena Non-English | 1419 | 1417 |
| LMArena Chinese | 1457 | 1465 |
| LMArena French | 1446 | 1418 |
| LMArena German | 1423 | 1407 |
| LMArena Japanese | 1405 | 1415 |
| LMArena Korean | 1396 | 1380 |
| LMArena Russian | 1429 | 1414 |
| LMArena Spanish | 1434 | 1454 |

## Instruction Following

- Chatgpt 4o Latest 20250326: 74.0 (#107)
- GLM-4.5: 74.1 (#104)

| Benchmark | Chatgpt 4o Latest 20250326 | GLM-4.5 |
|---|---|---|
| LMArena Instruction Following | 1403 | 1404 |

## Long Context

- Chatgpt 4o Latest 20250326: 43.1 (#107)
- GLM-4.5: 38.2 (#201)

| Benchmark | Chatgpt 4o Latest 20250326 | GLM-4.5 |
|---|---|---|
| LMArena Longer Query | 1413 | 1412 |
| Fiction.LiveBench | — | 58.3% |

## Writing & Preference

- Chatgpt 4o Latest 20250326: 62.6 (#72)
- GLM-4.5: 57.5 (#127)

| Benchmark | Chatgpt 4o Latest 20250326 | GLM-4.5 |
|---|---|---|
| LMArena Text | 1429 | 1430 |
| LMArena Creative Writing | 1405 | 1395 |
| EQ-Bench Creative Writing | 1501 | 1343 |
| LMArena Multi-Turn | 1454 | 1415 |
| Short-Story Creative Writing | — | 73.4% |

## FAQ

### Is Chatgpt 4o Latest 20250326 better than GLM-4.5?

Chatgpt 4o Latest 20250326 is the stronger model overall, scoring 43.8 to 42.0 on the Noometry Index.

### Is Chatgpt 4o Latest 20250326 or GLM-4.5 better for coding?

They score almost the same on coding (41.6 vs 41.4); test both on your own repository before choosing.

### How many benchmarks do Chatgpt 4o Latest 20250326 and GLM-4.5 share?

20 benchmarks have published results for both models. Chatgpt 4o Latest 20250326 has 21 scored results on Noometry and GLM-4.5 has 27.