Cash Equivalents and Short-Term Investments - Summary of Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value (Details) - USD ($) $ in Thousands	Apr. 30, 2024	Jan. 31, 2024
Debt Securities, Available-for-Sale, Unrealized Loss Position
Short-term investments, less than 12 months, unrealized Losses	$ (218)	$ (16)
Short-term investments, less than 12 months, fair value	93,433	35,745
Short-term investments,12 months or greater, unrealized Losses	0	0
Short-term investments, 12 months or greater, fair value	0	144
Short-term investments, unrealized Losses	(218)	(16)
Short-term investments, fair value	93,433	35,889
U.S. government treasury securities
Debt Securities, Available-for-Sale, Unrealized Loss Position
Short-term investments, less than 12 months, unrealized Losses	(157)	(7)
Short-term investments, less than 12 months, fair value	77,620	22,746
Short-term investments,12 months or greater, unrealized Losses	0	0
Short-term investments, 12 months or greater, fair value	0	0
Short-term investments, unrealized Losses	(157)	(7)
Short-term investments, fair value	77,620	22,746
U.S. government agency securities
Debt Securities, Available-for-Sale, Unrealized Loss Position
Short-term investments, less than 12 months, unrealized Losses	(12)	(8)
Short-term investments, less than 12 months, fair value	5,987	7,991
Short-term investments,12 months or greater, unrealized Losses	0	0
Short-term investments, 12 months or greater, fair value	0	0
Short-term investments, unrealized Losses	(12)	(8)
Short-term investments, fair value	5,987	7,991
Corporate debt securities
Debt Securities, Available-for-Sale, Unrealized Loss Position
Short-term investments, less than 12 months, unrealized Losses	(49)	(1)
Short-term investments, less than 12 months, fair value	9,826	5,008
Short-term investments,12 months or greater, unrealized Losses	0	0
Short-term investments, 12 months or greater, fair value	0	0
Short-term investments, unrealized Losses	(49)	(1)
Short-term investments, fair value	$ 9,826	5,008
Asset-backed securities
Debt Securities, Available-for-Sale, Unrealized Loss Position
Short-term investments, less than 12 months, unrealized Losses		0
Short-term investments, less than 12 months, fair value		0
Short-term investments,12 months or greater, unrealized Losses		0
Short-term investments, 12 months or greater, fair value		144
Short-term investments, unrealized Losses		0
Short-term investments, fair value		$ 144

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