Model comparison
Chatgpt 4o Latest 20250326 vs GLM-4.5-Air
Chatgpt 4o Latest 20250326 is the stronger model overall, scoring 43.2 to 38.7 on the Noometry Index.
Last verified . 18 shared benchmarks.
Summary
- They share 18 benchmarks with published results for both. Chatgpt 4o Latest 20250326 scores higher in 8 categories and GLM-4.5-Air in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Chatgpt 4o Latest 20250326 leads 32.8 to 23.3.
- The biggest single-benchmark swing is Kagi LLM Benchmark: 75% for Chatgpt 4o Latest 20250326 and 43% for GLM-4.5-Air.
- GLM-4.5-Air has downloadable open weights; the other is API-only.
Side by side
| Chatgpt 4o Latest 20250326 | GLM-4.5-Air | |
|---|---|---|
| Provider | OpenAI | Z.ai (Zhipu) |
| Noometry Index | 43.2 | 38.7 |
| Released | — | 2025-07-20 |
| Weights | Proprietary | Open |
| Context window | — | 131K |
| Max output | — | 98K |
| Input $ / M tokens | — | $0.20 |
| Output $ / M tokens | — | $1.10 |
| Results tracked | 21 | 27 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 41.0 (#122), GLM-4.5-Air: 34.5 (#225)
| Benchmark | Chatgpt 4o Latest 20250326 | GLM-4.5-Air |
|---|---|---|
| LMArena Coding | 1413 | 1397 |
| GSO | — | 2.9% |
Reasoning Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 32.8 (#64), GLM-4.5-Air: 23.3 (#166)
| Benchmark | Chatgpt 4o Latest 20250326 | GLM-4.5-Air |
|---|---|---|
| Kagi LLM Benchmark | 75% | 43% |
| LMArena Hard Prompts | 1424 | 1379 |
| ForecastBench | — | 59.2 |
Math Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 35.8 (#134), GLM-4.5-Air: 33.8 (#166)
| Benchmark | Chatgpt 4o Latest 20250326 | GLM-4.5-Air |
|---|---|---|
| LMArena Math | 1407 | 1396 |
| Omni-MATH | — | 39.1% |
Knowledge Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 38.7 (#131), GLM-4.5-Air: 34.6 (#184)
| Benchmark | Chatgpt 4o Latest 20250326 | GLM-4.5-Air |
|---|---|---|
| LMArena Expert | 1400 | 1370 |
| Humanity's Last Exam | — | 8.1% |
| MMLU-Pro | — | 76.2% |
| Confabulations | 16.6% | — |
| Vectara Hallucination Rate | — | 9.3% |
| GPQA (HELM) | — | 59.4% |
Multimodal Not comparable
Chatgpt 4o Latest 20250326: 38.9 (#54), GLM-4.5-Air: —
| Benchmark | Chatgpt 4o Latest 20250326 | GLM-4.5-Air |
|---|---|---|
| LMArena Vision | 1243 | — |
Multilingual Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 53.1 (#72), GLM-4.5-Air: 49.4 (#130)
| Benchmark | Chatgpt 4o Latest 20250326 | GLM-4.5-Air |
|---|---|---|
| LMArena Non-English | 1419 | 1366 |
| LMArena Chinese | 1456 | 1427 |
| LMArena French | 1447 | 1399 |
| LMArena German | 1424 | 1376 |
| LMArena Japanese | 1406 | 1348 |
| LMArena Korean | 1397 | 1306 |
| LMArena Russian | 1429 | 1373 |
| LMArena Spanish | 1435 | 1385 |
Instruction Following Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 74.2 (#102), GLM-4.5-Air: 69.8 (#165)
| Benchmark | Chatgpt 4o Latest 20250326 | GLM-4.5-Air |
|---|---|---|
| LMArena Instruction Following | 1403 | 1353 |
| IFEval | — | 81.2% |
Long Context Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 43.1 (#104), GLM-4.5-Air: 41.6 (#130)
| Benchmark | Chatgpt 4o Latest 20250326 | GLM-4.5-Air |
|---|---|---|
| LMArena Longer Query | 1413 | 1367 |
Writing & Preference Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 62.8 (#68), GLM-4.5-Air: 56.1 (#134)
| Benchmark | Chatgpt 4o Latest 20250326 | GLM-4.5-Air |
|---|---|---|
| LMArena Text | 1429 | 1384 |
| LMArena Creative Writing | 1406 | 1343 |
| LMArena Multi-Turn | 1454 | 1371 |
| EQ-Bench Creative Writing | 1501 | — |
| WildBench | — | 78.9% |
Frequently asked questions
Is Chatgpt 4o Latest 20250326 better than GLM-4.5-Air?
Chatgpt 4o Latest 20250326 is the stronger model overall, scoring 43.2 to 38.7 on the Noometry Index.
Is Chatgpt 4o Latest 20250326 or GLM-4.5-Air better for coding?
Chatgpt 4o Latest 20250326 scores higher on coding benchmarks: 41.0 versus 34.5 in the Noometry coding category.
How many benchmarks do Chatgpt 4o Latest 20250326 and GLM-4.5-Air share?
18 benchmarks have published results for both models. Chatgpt 4o Latest 20250326 has 21 scored results on Noometry and GLM-4.5-Air has 27.