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GLM 4.5 Air 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 70.4)
  • GLM 4.5 Air is cheaper ($0.13 vs $2.00 per 1M input)
  • Grok 4.20 0309 v2 is faster
GLM 4.5 AirGrok 4.20 0309 v2
Intelligence index70.491.1
DeveloperZhipu AIxAI
TypeLLMLLM
AccessOpen weights
Context window131,072 tokens
Input price$0.13 / 1M$2.00 / 1M
Output price$0.85 / 1M$6.00 / 1M
Speed63 tok/s105 tok/s
ReleasedJuly 25, 2025April 7, 2026
Parameters
Input modalitiesText
Output modalitiesText

Shared benchmarks

GLM 4.5 Air
Grok 4.20 0309 v2
GPQA Diamond
75
91.1
Humanity’s Last Exam
10.6
32.2