o3-pro vs GLM-4.6
OpenAI o3-pro | Z.ai GLM-4.6 | |
|---|---|---|
| Overview | ||
| Company | OpenAI | Z.ai |
| Release date | Jun 10 2025 | 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 | o3-pro shipped 112 days before GLM-4.6 | |
Which is better: o3-pro or GLM-4.6?
o3-pro and GLM-4.6 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. o3-pro shipped 112 days before GLM-4.6, so benchmark comparisons should account for the intervening progress.
o3-pro is proprietary, while GLM-4.6 is open weight.
Direct benchmark comparisons are unavailable — o3-pro and GLM-4.6 don't publish scores on any of the same benchmarks.
Frequently asked questions
o3-pro was released by OpenAI on Jun 10 2025.
GLM-4.6 was released by Z.ai on Sep 30 2025.
o3-pro is a proprietary model released by OpenAI. GLM-4.6 is an open weight model released by Z.ai.