Cash, Cash Equivalents and Short-Term Investments - Schedule of Cash and Short Term Investments (Details) - USD ($) $ in Thousands	Oct. 31, 2023	Jan. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 707,159	$ 646,104
Gross Unrealized Gains	3	53
Gross Unrealized Losses	(2,837)	(4,908)
Fair Value	704,325	641,249
Cash and Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	285,312	295,402
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(3)	0
Fair Value	285,309	295,402
Cash | Cash and Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	86,109	232,332
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	86,109	232,332
Money market funds | Cash and Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	154,402	60,073
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	154,402	60,073
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	404,686	383,238
Gross Unrealized Gains	3	0
Gross Unrealized Losses	(1,102)	(3,729)
Fair Value	403,587	379,509
U.S. Treasury securities | Cash and Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	25,812
Gross Unrealized Gains	0
Gross Unrealized Losses	0
Fair Value	25,812
Commercial paper
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	35,751	88,703
Gross Unrealized Gains	0	18
Gross Unrealized Losses	(26)	(112)
Fair Value	35,725	88,609
Commercial paper | Cash and Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	18,989
Gross Unrealized Gains	0
Gross Unrealized Losses	(3)
Fair Value	18,986
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	206,334	95,805
Gross Unrealized Gains	0	33
Gross Unrealized Losses	(1,393)	(572)
Fair Value	204,941	95,266
U.S. Agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	58,139	74,158
Gross Unrealized Gains	0	2
Gross Unrealized Losses	(313)	(435)
Fair Value	57,826	73,725
U.S. Agency securities | Cash and Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		2,997
Gross Unrealized Gains		0
Gross Unrealized Losses		0
Fair Value		2,997
Municipal bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		1,989
Gross Unrealized Gains		0
Gross Unrealized Losses		(19)
Fair Value		1,970
Foreign government bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,249	2,211
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(3)	(41)
Fair Value	$ 2,246	$ 2,170