Net Loss Per Share - Schedule of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2024
Numerator:
Net loss	$ (189,024)	$ (255,536)	$ (257,030)
Denominator:
Weighted-average shares used in calculating net loss per share, basic (in shares)	236,823	229,472	220,406
Weighted-average shares used in calculating net loss per share, diluted (in shares)	236,823	229,472	220,406
Net loss per share, basic (in usd per share)	$ (0.80)	$ (1.11)	$ (1.17)
Net loss per share, diluted (in usd per share)	$ (0.80)	$ (1.11)	$ (1.17)