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Claude Sonnet 4.5 vs GLM 5 Turbo

Compare Claude Sonnet 4.5 by Anthropic against GLM 5 Turbo by Z-ai, context windows of 200K vs 203K, tested across 42 shared challenges. Updated March 2026.

Which is better, Claude Sonnet 4.5 or GLM 5 Turbo?

Claude Sonnet 4.5 and GLM 5 Turbo are both competitive models. Claude Sonnet 4.5 costs $3/M input tokens vs $0.96/M for GLM 5 Turbo. Context windows: 200K vs 203K tokens. Compare their real outputs side by side below.

Key Differences Between Claude Sonnet 4.5 and GLM 5 Turbo

Claude Sonnet 4.5 is made by anthropic while GLM 5 Turbo is from z-ai. Claude Sonnet 4.5 has a 200K token context window compared to GLM 5 Turbo's 203K. On pricing, Claude Sonnet 4.5 costs $3/M input tokens vs $0.96/M for GLM 5 Turbo.

Our Verdict
Claude Sonnet 4.5
Claude Sonnet 4.5
GLM 5 Turbo
GLM 5 TurboRunner-up

No community votes yet. On paper, Claude Sonnet 4.5 has the edge — bigger model tier, major provider backing.

GLM 5 Turbo is 4.7x cheaper per token — worth considering if cost matters.

Too close to call
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