Zhipu AI's most capable model with a major leap in coding and long-horizon task performance.
Anthropic's flagship for demanding reasoning, coding, and long-horizon agentic work.
No shared demos for these models yet.
No captured outputs for these models yet.
Both GLM 5.1 and Claude Opus 5 are capable AI models. The best choice depends on your specific use case: consider pricing, context window, speed, and which capabilities (vision, reasoning, audio) you need.
GLM 5.1 has a lower blended cost. GLM 5.1: $0.97 input / $3.04 output. Claude Opus 5: $5.00 input / $25.00 output.
Claude Opus 5 has a larger context window: GLM 5.1 supports 200K tokens vs Claude Opus 5 at 1M tokens.
Claude Opus 5 supports vision/image input, but GLM 5.1 does not.
Key differences: GLM 5.1 is significantly cheaper; only Claude Opus 5 supports vision input. Compare full specs on this page.
If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both GLM 5.1 and Claude Opus 5 for free on idapt.app to see which performs better for your specific needs.