o1-preview vs GLM-4.6
OpenAI o1-preview | Z.ai GLM-4.6 | |
|---|---|---|
| Overview | ||
| Company | OpenAI | Z.ai |
| Release date | Sep 12 2024 | Sep 30 2025 |
| Access | Proprietary | Open Weight |
| Specifications | ||
Parameters | — | 355B |
Context window | — | 200k |
| 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. | — | 68% |
| Timeline | ||
| Release gap | o1-preview shipped 383 days before GLM-4.6 | |
Which is better: o1-preview or GLM-4.6?
o1-preview and GLM-4.6 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. o1-preview shipped 383 days before GLM-4.6, so benchmark comparisons should account for the intervening progress.
o1-preview is proprietary, while GLM-4.6 is open weight.
Direct benchmark comparisons are unavailable — o1-preview and GLM-4.6 don't publish scores on any of the same benchmarks.
Frequently asked questions
o1-preview was released by OpenAI on Sep 12 2024.
GLM-4.6 was released by Z.ai on Sep 30 2025.
o1-preview is a proprietary model released by OpenAI. GLM-4.6 is an open weight model released by Z.ai.
Other comparisons
o1-preview vs Claude Fable 5GLM-4.6 vs Claude Fable 5o1-preview vs Gemini OmniGLM-4.6 vs Gemini Omnio1-preview vs Muse SparkGLM-4.6 vs Muse Sparko1-preview vs Grok 4.3 BetaGLM-4.6 vs Grok 4.3 Betao1-preview vs DeepSeek-V4-ProGLM-4.6 vs DeepSeek-V4-Proo1-preview vs Mistral Medium 3.5GLM-4.6 vs Mistral Medium 3.5