Cash, Cash Equivalents and Short-Term Investments - Schedule of Cash and Short Term Investments (Details) - USD ($) $ in Thousands	Jul. 31, 2023	Jan. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 716,607	$ 646,104
Gross Unrealized Gains	3	53
Gross Unrealized Losses	(3,552)	(4,908)
Fair Value	713,058	641,249
Cash and Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	273,228	295,402
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(3)	0
Fair Value	273,225	295,402
Cash | Cash and Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	126,196	232,332
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	126,196	232,332
Money market funds | Cash and Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	117,628	60,073
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	117,628	60,073
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	385,848	383,238
Gross Unrealized Gains	1	0
Gross Unrealized Losses	(1,863)	(3,729)
Fair Value	383,986	379,509
U.S. Treasury securities | Cash and Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	18,485
Gross Unrealized Gains	0
Gross Unrealized Losses	0
Fair Value	18,485
Commercial paper
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	83,957	88,703
Gross Unrealized Gains	0	18
Gross Unrealized Losses	(77)	(112)
Fair Value	83,880	88,609
Commercial paper | Cash and Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	10,919
Gross Unrealized Gains	0
Gross Unrealized Losses	(3)
Fair Value	10,916
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	177,000	95,805
Gross Unrealized Gains	2	33
Gross Unrealized Losses	(1,148)	(572)
Fair Value	175,854	95,266
U.S. Agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	67,567	74,158
Gross Unrealized Gains	0	2
Gross Unrealized Losses	(445)	(435)
Fair Value	67,122	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	2,235	2,211
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(19)	(41)
Fair Value	$ 2,216	$ 2,170