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GLM 5 Turbo vs GPT-5.2

Compare GLM 5 Turbo by Z-ai against GPT-5.2 by OpenAI, context windows of 203K vs 400K, tested across 52 shared challenges. Updated March 2026.

Which is better, GLM 5 Turbo or GPT-5.2?

GLM 5 Turbo and GPT-5.2 are both competitive models. GLM 5 Turbo costs $0.96/M input tokens vs $1.75/M for GPT-5.2. Context windows: 203K vs 400K tokens. Compare their real outputs side by side below.

Key Differences Between GLM 5 Turbo and GPT-5.2

GLM 5 Turbo is made by z-ai while GPT-5.2 is from openai. GLM 5 Turbo has a 203K token context window compared to GPT-5.2's 400K. On pricing, GLM 5 Turbo costs $0.96/M input tokens vs $1.75/M for GPT-5.2.

Our Verdict
GPT-5.2
GPT-5.2
GLM 5 Turbo
GLM 5 TurboRunner-up

No community votes yet. On paper, GPT-5.2 has the edge — bigger model tier, bigger context window, major provider backing.

GLM 5 Turbo is 4.4x cheaper per token — worth considering if cost matters.

Too close to call
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