Z.ai: GLM 5 vs Claude Opus 4

Compare Z.ai: GLM 5 by Zhipu AI against Claude Opus 4 by Anthropic, context windows of 203K vs 200K, tested across 35 shared challenges. Updated March 2026.

Which is better, Z.ai: GLM 5 or Claude Opus 4?

Z.ai: GLM 5 and Claude Opus 4 are both competitive models. Z.ai: GLM 5 costs $0.8/M input tokens vs $15/M for Claude Opus 4. Context windows: 203K vs 200K tokens. Compare their real outputs side by side below.

Key Differences Between Z.ai: GLM 5 and Claude Opus 4

Z.ai: GLM 5 is made by zhipu while Claude Opus 4 is from anthropic. Z.ai: GLM 5 has a 203K token context window compared to Claude Opus 4's 200K. On pricing, Z.ai: GLM 5 costs $0.8/M input tokens vs $15/M for Claude Opus 4.

Our Verdict
Z.ai: GLM 5
Z.ai: GLM 5
Claude Opus 4
Claude Opus 4

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Z.ai: GLM 5 is 29x cheaper per token — worth considering if cost matters.

Too close to call
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Z.ai: GLM 5Claude Opus 4
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