DeepSeek-V4-Pro vs GLM-5.1
DeepSeek DeepSeek-V4-Pro | Z.ai GLM-5.1 | |
|---|---|---|
| Overview | ||
| Company | DeepSeek | Z.ai |
| Release date | Apr 24 2026 | Apr 7 2026 |
| Access | Open Weight | Open Weight |
| Specifications | ||
Parameters | — | 744B |
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. | 14% | — |
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. | — | 68% |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 90.1%Best | 86.2% |
| Timeline | ||
| Release gap | GLM-5.1 shipped 17 days before DeepSeek-V4-Pro | |
Which is better: DeepSeek-V4-Pro or GLM-5.1?
DeepSeek-V4-Pro leads GLM-5.1 on 1 of the 1 benchmark they both report (GPQA Diamond). GLM-5.1 shipped 17 days before DeepSeek-V4-Pro, 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.
On GPQA Diamond, DeepSeek-V4-Pro leads at 90.1% vs GLM-5.1 at 86.2%.
Frequently asked questions
DeepSeek-V4-Pro was released by DeepSeek on Apr 24 2026.
GLM-5.1 was released by Z.ai on Apr 7 2026.
DeepSeek-V4-Pro leads on GPQA Diamond — DeepSeek-V4-Pro 90.1% vs GLM-5.1 86.2%.
Other comparisons
DeepSeek-V4-Pro vs Claude Fable 5GLM-5.1 vs Claude Fable 5DeepSeek-V4-Pro vs GPT-5.6 SolGLM-5.1 vs GPT-5.6 SolDeepSeek-V4-Pro vs Gemini OmniGLM-5.1 vs Gemini OmniDeepSeek-V4-Pro vs Muse SparkGLM-5.1 vs Muse SparkDeepSeek-V4-Pro vs Grok 4.3 BetaGLM-5.1 vs Grok 4.3 BetaDeepSeek-V4-Pro vs Mistral Medium 3.5GLM-5.1 vs Mistral Medium 3.5