gpt-oss-120b vs GLM-4
OpenAI gpt-oss-120b | Z.ai GLM-4 | |
|---|---|---|
| Overview | ||
| Company | OpenAI | Z.ai |
| Release date | Aug 5 2025 | Jan 16 2024 |
| Access | Open Weight | Proprietary |
| 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% | — |
| Timeline | ||
| Release gap | GLM-4 shipped 567 days before gpt-oss-120b | |
Which is better: gpt-oss-120b or GLM-4?
gpt-oss-120b and GLM-4 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. GLM-4 shipped 567 days before gpt-oss-120b, so benchmark comparisons should account for the intervening progress.
gpt-oss-120b is open weight, while GLM-4 is proprietary.
Direct benchmark comparisons are unavailable — gpt-oss-120b and GLM-4 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 was released by Z.ai on Jan 16 2024.
gpt-oss-120b is an open weight model released by OpenAI. GLM-4 is a proprietary model released by Z.ai.
Other comparisons
gpt-oss-120b vs Claude Fable 5GLM-4 vs Claude Fable 5gpt-oss-120b vs Gemini OmniGLM-4 vs Gemini Omnigpt-oss-120b vs Muse SparkGLM-4 vs Muse Sparkgpt-oss-120b vs Grok 4.3 BetaGLM-4 vs Grok 4.3 Betagpt-oss-120b vs DeepSeek-V4-ProGLM-4 vs DeepSeek-V4-Progpt-oss-120b vs Mistral Medium 3.5GLM-4 vs Mistral Medium 3.5