GPT-5.4-Pro vs GLM-5.1
OpenAI GPT-5.4-Pro | Z.ai GLM-5.1 | |
|---|---|---|
| Overview | ||
| Company | OpenAI | Z.ai |
| Release date | Mar 5 2026 | Apr 7 2026 |
| Access | Proprietary | Open Weight |
| Specifications | ||
Parameters | — | 744B |
Context window | — | 200k |
| Benchmarks | ||
Agentic terminal coding Terminal-Bench 2.0Can the AI work in a command-line terminal — running commands and finishing technical setup tasks the way a developer would? (Version 2.0 of the test.) Higher is better. | — | 63.5% |
Web browsing BrowseCompCan the AI browse the web and track down hard-to-find answers? Higher is better. | 89.3%Best | 68% |
Advanced math FrontierMath · Tier 1–3Very hard, research-level math problems. Tiers 1–3 are the (still extremely difficult) lower tiers. Higher is better. | 50% | — |
Advanced math FrontierMath · Tier 4Very hard, research-level math problems. Tier 4 is the hardest — close to what professional research mathematicians tackle. Higher is better. | 38% | — |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 94.4%Best | 86.2% |
Knowledge work GDPval (win/tie rate)How often the AI's work matches or beats a human expert's on real knowledge-work tasks. Higher is better. | 82% | — |
| Timeline | ||
| Release gap | GPT-5.4-Pro shipped 33 days before GLM-5.1 | |
Which is better: GPT-5.4-Pro or GLM-5.1?
GPT-5.4-Pro leads GLM-5.1 on 2 of the 2 benchmarks they both report (BrowseComp, GPQA Diamond). GPT-5.4-Pro shipped 33 days before GLM-5.1, so benchmark comparisons should account for the intervening progress.
GPT-5.4-Pro is proprietary, while GLM-5.1 is open weight.
On BrowseComp, GPT-5.4-Pro leads at 89.3% vs GLM-5.1 at 68%. On GPQA Diamond, GPT-5.4-Pro leads at 94.4% vs GLM-5.1 at 86.2%.
Frequently asked questions
GPT-5.4-Pro was released by OpenAI on Mar 5 2026.
GLM-5.1 was released by Z.ai on Apr 7 2026.
GPT-5.4-Pro leads on GPQA Diamond — GPT-5.4-Pro 94.4% vs GLM-5.1 86.2%.
GPT-5.4-Pro is a proprietary model released by OpenAI. GLM-5.1 is an open weight model released by Z.ai.
Other comparisons
GPT-5.4-Pro vs Claude Fable 5GLM-5.1 vs Claude Fable 5GPT-5.4-Pro vs Gemini OmniGLM-5.1 vs Gemini OmniGPT-5.4-Pro vs Muse SparkGLM-5.1 vs Muse SparkGPT-5.4-Pro vs Grok 4.3 BetaGLM-5.1 vs Grok 4.3 BetaGPT-5.4-Pro vs DeepSeek-V4-ProGLM-5.1 vs DeepSeek-V4-ProGPT-5.4-Pro vs Mistral Medium 3.5GLM-5.1 vs Mistral Medium 3.5