o1 vs GLM-4.5-Air
OpenAI o1 | Z.ai GLM-4.5-Air | |
|---|---|---|
| Overview | ||
| Company | OpenAI | Z.ai |
| Release date | Dec 5 2024 | Jul 28 2025 |
| Access | Proprietary | Open Weight |
| Specifications | ||
Parameters | — | 106B |
| Benchmarks | ||
Coding SWE-Bench VerifiedReal coding tasks pulled from open-source projects — the AI has to find and fix actual bugs. A human-checked version of the original SWE-Bench. Higher is better. | — | 59.8% |
| Timeline | ||
| Release gap | o1 shipped 235 days before GLM-4.5-Air | |
Which is better: o1 or GLM-4.5-Air?
o1 and GLM-4.5-Air don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. o1 shipped 235 days before GLM-4.5-Air, so benchmark comparisons should account for the intervening progress.
o1 is proprietary, while GLM-4.5-Air is open weight.
Direct benchmark comparisons are unavailable — o1 and GLM-4.5-Air don't publish scores on any of the same benchmarks.
Frequently asked questions
o1 was released by OpenAI on Dec 5 2024.
GLM-4.5-Air was released by Z.ai on Jul 28 2025.
o1 is a proprietary model released by OpenAI. GLM-4.5-Air is an open weight model released by Z.ai.