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GLM-4.5 vs Grok 4.20 0309 v2

Zhipu AI vs xAI — benchmarks, pricing, and capabilities side by side.

  • Grok 4.20 0309 v2 has the higher intelligence index (91.1 vs 73)
  • GLM-4.5 is cheaper ($0.60 vs $2.00 per 1M input)
  • Grok 4.20 0309 v2 is faster
GLM-4.5Grok 4.20 0309 v2
Intelligence index7391.1
DeveloperZhipu AIxAI
TypeLLMLLM
AccessOpen weights
Context window131,072 tokens
Input price$0.60 / 1M$2.00 / 1M
Output price$2.20 / 1M$6.00 / 1M
Speed85 tok/s105 tok/s
ReleasedJuly 28, 2025April 7, 2026
Parameters355B (32B active)
Input modalitiesText
Output modalitiesText

Shared benchmarks

GLM-4.5
Grok 4.20 0309 v2
GPQA Diamond
79.1
91.1
Humanity’s Last Exam
14.4
32.2