Claude 3 Opus vs GLM-5.1
Anthropic Claude 3 Opus | Z.ai GLM-5.1 | |
|---|---|---|
| Overview | ||
| Company | Anthropic | Z.ai |
| Release date | Mar 4 2024 | Apr 7 2026 |
| Access | Proprietary | Open Weight |
| Specifications | ||
Parameters | — | 744B |
Context window | — | 200k |
| Benchmarks | ||
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. | 33% | — |
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. | 50.4% | 86.2%Best |
| Timeline | ||
| Release gap | Claude 3 Opus shipped 764 days before GLM-5.1 | |
Which is better: Claude 3 Opus or GLM-5.1?
GLM-5.1 leads Claude 3 Opus on 1 of the 1 benchmark they both report (GPQA Diamond). Claude 3 Opus shipped 764 days before GLM-5.1, so benchmark comparisons should account for the intervening progress.
Claude 3 Opus is proprietary, while GLM-5.1 is open weight.
On GPQA Diamond, GLM-5.1 leads at 86.2% vs Claude 3 Opus at 50.4%.
Frequently asked questions
Claude 3 Opus was released by Anthropic on Mar 4 2024.
GLM-5.1 was released by Z.ai on Apr 7 2026.
GLM-5.1 leads on GPQA Diamond — Claude 3 Opus 50.4% vs GLM-5.1 86.2%.
Claude 3 Opus is a proprietary model released by Anthropic. GLM-5.1 is an open weight model released by Z.ai.
Other comparisons
Claude 3 Opus vs GPT-5.6 SolGLM-5.1 vs GPT-5.6 SolClaude 3 Opus vs Gemini OmniGLM-5.1 vs Gemini OmniClaude 3 Opus vs Muse SparkGLM-5.1 vs Muse SparkClaude 3 Opus vs Grok 4.3 BetaGLM-5.1 vs Grok 4.3 BetaClaude 3 Opus vs DeepSeek-V4-ProGLM-5.1 vs DeepSeek-V4-ProClaude 3 Opus vs Mistral Medium 3.5GLM-5.1 vs Mistral Medium 3.5