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Gemini 2.5 Pro Preview 06-05 vs Z.ai: GLM 5

Compare Gemini 2.5 Pro Preview 06-05 by Google AI against Z.ai: GLM 5 by Zhipu AI, context windows of 1.0M vs 203K, tested across 38 shared challenges. Updated April 2026.

Which is better, Gemini 2.5 Pro Preview 06-05 or Z.ai: GLM 5?

Gemini 2.5 Pro Preview 06-05 and Z.ai: GLM 5 are both competitive models. Gemini 2.5 Pro Preview 06-05 costs $1.25/M input tokens vs $0.8/M for Z.ai: GLM 5. Context windows: 1049K vs 203K tokens. Compare their real outputs side by side below.

Key Differences Between Gemini 2.5 Pro Preview 06-05 and Z.ai: GLM 5

Gemini 2.5 Pro Preview 06-05 is made by google while Z.ai: GLM 5 is from zhipu. Gemini 2.5 Pro Preview 06-05 has a 1049K token context window compared to Z.ai: GLM 5's 203K. On pricing, Gemini 2.5 Pro Preview 06-05 costs $1.25/M input tokens vs $0.8/M for Z.ai: GLM 5.

Our Verdict
Gemini 2.5 Pro Preview 06-05
Gemini 2.5 Pro Preview 06-05
Z.ai: GLM 5
Z.ai: GLM 5

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 3.9x cheaper per token — worth considering if cost matters.

Too close to call
Writing DNA

Style Comparison

Similarity
98%

Z.ai: GLM 5 uses 3.5x more transitions

Gemini 2.5 Pro Preview 06-05
Z.ai: GLM 5
51%Vocabulary54%
15wSentence Length17w
0.31Hedging0.37
4.8Bold6.3
4.1Lists4.7
0.00Emoji0.00
0.98Headings0.60
0.05Transitions0.18
Based on 20 + 22 text responses
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Gemini 2.5 Pro Preview 06-05Z.ai: GLM 5

279 AI models invented the same fake scientist.

We read every word. 250 models. 2.14 million words. This is what we found.

AI Hallucination Index 2026
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