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, 2025	Jul. 31, 2025	Apr. 30, 2025	Oct. 31, 2024	Jul. 31, 2024	Apr. 30, 2024	Oct. 31, 2025	Oct. 31, 2024
Numerator:
Net loss	$ (2,007)	$ (47,048)	$ (37,626)	$ (9,776)	$ (54,529)	$ (80,593)	$ (86,681)	$ (144,898)
Denominator:
Weighted-average shares used to compute net loss per share, basic and diluted	81,401,853			74,020,593			81,245,331	73,472,900
Net loss per share, basic and diluted (in dollars per share)	$ (0.02)			$ (0.13)			$ (1.07)	$ (1.97)