Cash Equivalents and Short-Term Investments - Schedule of Unrealized Losses Cash Equivalents and Short Term Investment (Details) - USD ($) $ in Thousands	Oct. 31, 2024	Jan. 31, 2024
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 months, carrying value	$ 280,926	$ 277,006
Less than 12 months, gross unrealized losses	(428)	(439)
12 months or greater, carrying value	25,876	68,064
12 months or greater, gross unrealized losses	(19)	(340)
Fair Value	306,802	345,070
Gross Unrealized Losses	(447)	(779)
U.S. Agency securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 months, carrying value	32,886	35,979
Less than 12 months, gross unrealized losses	(59)	(53)
12 months or greater, carrying value	0	11,386
12 months or greater, gross unrealized losses	0	(83)
Fair Value	32,886	47,365
Gross Unrealized Losses	(59)	(136)
Commercial paper
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 months, carrying value	9,846	15,462
Less than 12 months, gross unrealized losses	(14)	(2)
12 months or greater, carrying value	0	0
12 months or greater, gross unrealized losses	0	0
Fair Value	9,846	15,462
Gross Unrealized Losses	(14)	(2)
Corporate debt securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 months, carrying value	59,688	85,998
Less than 12 months, gross unrealized losses	(127)	(192)
12 months or greater, carrying value	24,876	15,485
12 months or greater, gross unrealized losses	(19)	(58)
Fair Value	84,564	101,483
Gross Unrealized Losses	(146)	(250)
U.S. Treasury securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 months, carrying value	178,506	139,567
Less than 12 months, gross unrealized losses	(228)	(192)
12 months or greater, carrying value	1,000	41,193
12 months or greater, gross unrealized losses	0	(199)
Fair Value	179,506	180,760
Gross Unrealized Losses	$ (228)	$ (391)