Ref. No. 863/41-1093 A
In the name of Allah the most Gracious the most Merciful
The answer to your question is as follows:
Allamah Jarullah Zamakhshari was Hanafite in school of thought and according to his belief he was Mu’tazilite.
الزمخشری جاراللہ: کان اماما فی التفسیر والنحو واللغۃ والادب واسع العلم کبیرالفضل متفننا فی علوم شتی معتزلی المذھب متجاھرا بذلک۔ (معجم الادباء 6/2688)
And Allah knows best
Darul Ifta
Darul Uloom Waqf Deoband