Net Loss Per Share Attributable to Common Stockholders - Summary of Computation of Basic and Diluted Net Loss Per Share Attributable to Common Stockholders (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jan. 31, 2023	Jan. 31, 2022	Jan. 31, 2021
Earnings Per Share [Abstract]
Net loss	$ (274,298)	$ (290,138)	$ (83,515)
Weighted-average shares used to compute net loss per share attributable to common stockholders, basic (in shares)	186,029,000	83,277,000	63,375,000
Weighted-average shares used to compute net loss per share attributable to common stockholders, diluted (in shares)	186,029,000	83,277,000	63,375,000
Net loss per share attributable to Class A and Class B common stockholders, basic (dollars per share)	$ (1.47)	$ (3.48)	$ (1.32)
Net loss per share attributable to Class A and Class B common stockholders, diluted (dollars per share)	$ (1.47)	$ (3.48)	$ (1.32)