gpt-oss-120b vs GLM-4.6
OpenAI gpt-oss-120b | Z.ai GLM-4.6 | |
|---|---|---|
| Overview | ||
| Company | OpenAI | Z.ai |
| Release date | Aug 5 2025 | Sep 30 2025 |
| Access | Open Weight | Open Weight |
| Specifications | ||
Parameters | — | 355B |
Context window | — | 200k |
| Benchmarks | ||
Nonsense detection BullshitBench v2Given a confidently-worded but nonsensical prompt, does the AI spot that it makes no sense and push back — instead of playing along and inventing an answer? The score is how often it clearly called out the nonsense. Higher is better. | 11% | — |
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 | gpt-oss-120b shipped 56 days before GLM-4.6 | |
Which is better: gpt-oss-120b or GLM-4.6?
gpt-oss-120b and GLM-4.6 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. gpt-oss-120b shipped 56 days before GLM-4.6, so benchmark comparisons should account for the intervening progress.
Published specifications for these two models are limited — see each model page for the latest details.
Direct benchmark comparisons are unavailable — gpt-oss-120b and GLM-4.6 don't publish scores on any of the same benchmarks.
Frequently asked questions
gpt-oss-120b was released by OpenAI on Aug 5 2025.
GLM-4.6 was released by Z.ai on Sep 30 2025.
Other comparisons
gpt-oss-120b vs Claude Fable 5GLM-4.6 vs Claude Fable 5gpt-oss-120b vs Gemini OmniGLM-4.6 vs Gemini Omnigpt-oss-120b vs Muse SparkGLM-4.6 vs Muse Sparkgpt-oss-120b vs Grok 4.3 BetaGLM-4.6 vs Grok 4.3 Betagpt-oss-120b vs DeepSeek-V4-ProGLM-4.6 vs DeepSeek-V4-Progpt-oss-120b vs Mistral Medium 3.5GLM-4.6 vs Mistral Medium 3.5