# Chatgpt 4o Latest 20250326 vs GLM-5.3-Flash

> GLM-5.3-Flash is the stronger model overall, scoring 49.6 to 43.2 on the Noometry Index.

- Canonical page: https://noometry.com/compare/chatgpt-4o-vs-glm-5-3-flash
- 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 1 category and GLM-5.3-Flash in 8 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where GLM-5.3-Flash leads 58.4 to 38.7.
- GLM-5.3-Flash has downloadable open weights; the other is API-only.

## Snapshot

| | Chatgpt 4o Latest 20250326 | GLM-5.3-Flash |
|---|---|---|
| Provider | OpenAI | Z.ai (Zhipu) |
| Noometry Index | 43.2 | 49.6 |
| Rank | 84 | 45 |
| Context | — | 1M |
| Input $/M | — | $0.15 |
| Output $/M | — | $0.50 |
| Weights | Proprietary | Open |

## Coding

- Chatgpt 4o Latest 20250326: 41.0 (#122)
- GLM-5.3-Flash: 53.7 (#26)

| Benchmark | Chatgpt 4o Latest 20250326 | GLM-5.3-Flash |
|---|---|---|
| LMArena Coding | 1413 | 1506 |
| DeepSWE | — | 63.4% |
| FrontierCode | — | 31.8% |
| LMArena WebDev | — | 1614 |
| SciCode | — | 51.6% |
| ALE-Bench | — | 303.55 |

## Agentic & Tool Use

- Chatgpt 4o Latest 20250326: —
- GLM-5.3-Flash: 34.3 (#41)

| Benchmark | Chatgpt 4o Latest 20250326 | GLM-5.3-Flash |
|---|---|---|
| APEX-Agents | — | 52.8% |
| GDP.pdf | — | 14% |

## Reasoning

- Chatgpt 4o Latest 20250326: 32.8 (#64)
- GLM-5.3-Flash: 31.7 (#69)

| Benchmark | Chatgpt 4o Latest 20250326 | GLM-5.3-Flash |
|---|---|---|
| LMArena Hard Prompts | 1424 | 1490 |
| Kagi LLM Benchmark | 75% | — |
| CritPt | — | 15.4% |
| Chess Puzzles | — | 14% |
| Mystery Game Puzzles | — | 8% |
| Surface Evolver Bench | — | 52.5% |
| Bench to the Future 3 | — | 0.15 |
| Epoch Capabilities Index | — | 151.9 |

## Math

- Chatgpt 4o Latest 20250326: 35.8 (#134)
- GLM-5.3-Flash: 53.1 (#38)

| Benchmark | Chatgpt 4o Latest 20250326 | GLM-5.3-Flash |
|---|---|---|
| LMArena Math | 1407 | 1499 |
| FrontierMath (Tiers 1-3) | — | 55.8% |
| FrontierMath Tier 4 | — | 17.1% |
| OTIS Mock AIME 2024-2025 | — | 93.9% |
| ProofBench | — | 21% |

## Knowledge

- Chatgpt 4o Latest 20250326: 38.7 (#131)
- GLM-5.3-Flash: 58.4 (#33)

| Benchmark | Chatgpt 4o Latest 20250326 | GLM-5.3-Flash |
|---|---|---|
| LMArena Expert | 1400 | 1512 |
| GPQA Diamond | — | 90.2% |
| Confabulations | 16.6% | — |

## Multimodal

- Chatgpt 4o Latest 20250326: 38.9 (#54)
- GLM-5.3-Flash: 42.6 (#25)

| Benchmark | Chatgpt 4o Latest 20250326 | GLM-5.3-Flash |
|---|---|---|
| LMArena Vision | 1243 | 1304 |

## Multilingual

- Chatgpt 4o Latest 20250326: 53.1 (#72)
- GLM-5.3-Flash: 56.2 (#24)

| Benchmark | Chatgpt 4o Latest 20250326 | GLM-5.3-Flash |
|---|---|---|
| LMArena Non-English | 1419 | 1462 |
| LMArena Chinese | 1456 | 1529 |
| LMArena French | 1447 | 1495 |
| LMArena German | 1424 | 1457 |
| LMArena Japanese | 1406 | 1420 |
| LMArena Korean | 1397 | 1443 |
| LMArena Russian | 1429 | 1472 |
| LMArena Spanish | 1435 | 1471 |

## Instruction Following

- Chatgpt 4o Latest 20250326: 74.2 (#102)
- GLM-5.3-Flash: 77.8 (#17)

| Benchmark | Chatgpt 4o Latest 20250326 | GLM-5.3-Flash |
|---|---|---|
| LMArena Instruction Following | 1403 | 1480 |

## Long Context

- Chatgpt 4o Latest 20250326: 43.1 (#104)
- GLM-5.3-Flash: 45.3 (#41)

| Benchmark | Chatgpt 4o Latest 20250326 | GLM-5.3-Flash |
|---|---|---|
| LMArena Longer Query | 1413 | 1479 |

## Writing & Preference

- Chatgpt 4o Latest 20250326: 62.8 (#68)
- GLM-5.3-Flash: 65.4 (#49)

| Benchmark | Chatgpt 4o Latest 20250326 | GLM-5.3-Flash |
|---|---|---|
| LMArena Text | 1429 | 1471 |
| LMArena Creative Writing | 1406 | 1440 |
| LMArena Multi-Turn | 1454 | 1471 |
| EQ-Bench Creative Writing | 1501 | — |

## FAQ

### Is Chatgpt 4o Latest 20250326 better than GLM-5.3-Flash?

GLM-5.3-Flash is the stronger model overall, scoring 49.6 to 43.2 on the Noometry Index.

### Is Chatgpt 4o Latest 20250326 or GLM-5.3-Flash better for coding?

GLM-5.3-Flash scores higher on coding benchmarks: 53.7 versus 41.0 in the Noometry coding category.

### How many benchmarks do Chatgpt 4o Latest 20250326 and GLM-5.3-Flash share?

18 benchmarks have published results for both models. Chatgpt 4o Latest 20250326 has 21 scored results on Noometry and GLM-5.3-Flash has 36.