gpt-oss-120b vs GLM-5.2
OpenAI gpt-oss-120b | Z.ai GLM-5.2 | |
|---|---|---|
| Overview | ||
| Company | OpenAI | Z.ai |
| Release date | Aug 5 2025 | Jun 16 2026 |
| Access | Open Weight | Open Weight |
| Specifications | ||
Parameters | — | 744B |
Context window | — | 1M |
| 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% | — |
Agentic coding SWE-Bench ProCan the AI fix real bugs in real software? It's handed actual problems from open-source projects and has to write code that genuinely solves them. Higher is better. | — | 62.1% |
Agentic terminal coding Terminal-Bench 2.1Can the AI work in a command-line terminal — running commands and finishing technical setup tasks the way a developer would? Higher is better. | — | 81% |
Multidisciplinary reasoning Humanity's Last Exam · no toolsHumanity's Last Exam — extremely hard expert questions across many subjects, written so you can't just look up the answer. “No tools” means the AI answers on its own. Higher is better. | — | 40.5% |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | — | 91.2% |
| Timeline | ||
| Release gap | gpt-oss-120b shipped 315 days before GLM-5.2 | |
Which is better: gpt-oss-120b or GLM-5.2?
gpt-oss-120b and GLM-5.2 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. gpt-oss-120b shipped 315 days before GLM-5.2, 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-5.2 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-5.2 was released by Z.ai on Jun 16 2026.
Other comparisons
gpt-oss-120b vs Claude Fable 5GLM-5.2 vs Claude Fable 5gpt-oss-120b vs Gemini OmniGLM-5.2 vs Gemini Omnigpt-oss-120b vs Muse SparkGLM-5.2 vs Muse Sparkgpt-oss-120b vs Grok 4.3 BetaGLM-5.2 vs Grok 4.3 Betagpt-oss-120b vs DeepSeek-V4-ProGLM-5.2 vs DeepSeek-V4-Progpt-oss-120b vs Mistral Medium 3.5GLM-5.2 vs Mistral Medium 3.5