Net Loss Per Share - Schedule of Basic and Diluted Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Oct. 31, 2024	Jul. 31, 2024	Apr. 30, 2024	Oct. 31, 2023	Jul. 31, 2023	Apr. 30, 2023	Oct. 31, 2024	Oct. 31, 2023
Numerator:
Net loss	$ (9,776)	$ (54,529)	$ (80,593)	$ (29,297)	$ (37,597)	$ (54,246)	$ (144,898)	$ (121,140)
Denominator:
Weighted-average shares used to compute net loss per share, basic and diluted	74,020,593			71,560,023			73,472,900	70,878,162
Net loss per share, basic and diluted (in dollars per share)	$ (0.13)			$ (0.41)			$ (1.97)	$ (1.71)