Cash Equivalents and Short-Term Investments - Schedule of Unrealized Losses Cash Equivalents and Short Term Investment (Details) - USD ($) $ in Thousands	Jan. 31, 2026	Jan. 31, 2025
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 months, carrying value	$ 170,989	$ 234,818
Less than 12 months, gross unrealized losses	(84)	(362)
12 months or greater, carrying value	0	5,988
12 months or greater, gross unrealized losses	0	(2)
Fair Value	170,989	240,806
Gross Unrealized Losses	(84)	(364)
U.S. Agency securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 months, carrying value	38,754	48,445
Less than 12 months, gross unrealized losses	(28)	(65)
12 months or greater, carrying value	0	0
12 months or greater, gross unrealized losses	0	0
Fair Value	38,754	48,445
Gross Unrealized Losses	(28)	(65)
Commercial paper
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 months, carrying value	4,976	13,430
Less than 12 months, gross unrealized losses	0	(11)
12 months or greater, carrying value	0	0
12 months or greater, gross unrealized losses	0	0
Fair Value	4,976	13,430
Gross Unrealized Losses	0	(11)
Corporate debt securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 months, carrying value	53,640	72,022
Less than 12 months, gross unrealized losses	(35)	(146)
12 months or greater, carrying value	0	5,988
12 months or greater, gross unrealized losses	0	(2)
Fair Value	53,640	78,010
Gross Unrealized Losses	(35)	(148)
U.S. Treasury securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 months, carrying value	73,619	100,921
Less than 12 months, gross unrealized losses	(21)	(140)
12 months or greater, carrying value	0	0
12 months or greater, gross unrealized losses	0	0
Fair Value	73,619	100,921
Gross Unrealized Losses	$ (21)	$ (140)