Claude Opus 4.7 vs Z.ai: GLM 5.1
Compare Claude Opus 4.7 by Anthropic against Z.ai: GLM 5.1 by Z-ai, context windows of 1.0M vs 203K, tested across 53 shared challenges. Updated May 2026.
Which is better, Claude Opus 4.7 or Z.ai: GLM 5.1?
Claude Opus 4.7 and Z.ai: GLM 5.1 are both competitive models. Claude Opus 4.7 costs $5/M input tokens vs $1.4/M for Z.ai: GLM 5.1. Context windows: 1000K vs 203K tokens. Compare their real outputs side by side below.
Key Differences Between Claude Opus 4.7 and Z.ai: GLM 5.1
Claude Opus 4.7 is made by anthropic while Z.ai: GLM 5.1 is from z-ai. Claude Opus 4.7 has a 1000K token context window compared to Z.ai: GLM 5.1's 203K. On pricing, Claude Opus 4.7 costs $5/M input tokens vs $1.4/M for Z.ai: GLM 5.1.
Per 1M tokens
Z.ai: GLM 5.1 is cheaper on both — 3.6× input, 5.7× output
No community votes yet. On paper, Claude Opus 4.7 has the edge — bigger model tier, bigger context window, major provider backing.
Z.ai: GLM 5.1 is 5.7x cheaper per token — worth considering if cost matters.
Style Comparison
Claude Opus 4.7 uses 86.2x more emoji
