Financial Instruments - Schedule of Available-for-Sale Securities (Details) - USD ($) $ in Thousands	Apr. 30, 2024	Jan. 31, 2024
Debt Securities, Available-for-Sale [Line Items]
Cash and cash equivalents, Amortized Cost	$ 502,614	$ 130,031
Cash and cash equivalents, Estimated Fair Value	502,614	130,031
Cash and cash equivalents and available for sale securities, Amortized Cost	606,395	279,150
Gross Unrealized Gains	2	130
Gross Unrealized Losses	(77)	(29)
Short-term investments, estimated fair value	103,706	149,220
Cash and cash equivalents and short term investments, Estimated Fair Value	606,320	279,251
Cash
Debt Securities, Available-for-Sale [Line Items]
Cash and cash equivalents, Amortized Cost	147,062	72,420
Cash and cash equivalents, Estimated Fair Value	147,062	72,420
Level 1:
Debt Securities, Available-for-Sale [Line Items]
Cash and cash equivalents, Estimated Fair Value	352,389	47,696
Cash and cash equivalents and available for sale securities, Amortized Cost	399,768	134,125
Gross Unrealized Gains	0	70
Gross Unrealized Losses	(48)	(13)
Short-term investments, estimated fair value	47,331	86,486
Cash and cash equivalents and short term investments, Estimated Fair Value	399,720	134,182
Level 1: | Money market funds
Debt Securities, Available-for-Sale [Line Items]
Cash and cash equivalents, Amortized Cost	352,389	47,696
Cash and cash equivalents, Estimated Fair Value	352,389	47,696
Level 1: | U.S. Treasuries
Debt Securities, Available-for-Sale [Line Items]
Cash and cash equivalents, Estimated Fair Value	0	0
Cash and cash equivalents and available for sale securities, Amortized Cost	47,379	86,429
Gross Unrealized Gains	0	70
Gross Unrealized Losses	(48)	(13)
Short-term investments, estimated fair value	47,331	86,486
Cash and cash equivalents and short term investments, Estimated Fair Value	47,331	86,486
Level 2:
Debt Securities, Available-for-Sale [Line Items]
Cash and cash equivalents, Estimated Fair Value	3,163	9,915
Cash and cash equivalents and available for sale securities, Amortized Cost	59,565	72,605
Gross Unrealized Gains	2	60
Gross Unrealized Losses	(29)	(16)
Short-term investments, estimated fair value	56,375	62,734
Cash and cash equivalents and short term investments, Estimated Fair Value	59,538	72,649
Level 2: | Commercial paper
Debt Securities, Available-for-Sale [Line Items]
Cash and cash equivalents, Estimated Fair Value	0	9,915
Cash and cash equivalents and available for sale securities, Amortized Cost	29,368	33,019
Gross Unrealized Gains	0	3
Gross Unrealized Losses	(8)	(3)
Short-term investments, estimated fair value	29,360	23,104
Cash and cash equivalents and short term investments, Estimated Fair Value	29,360	33,019
Level 2: | Corporate bonds
Debt Securities, Available-for-Sale [Line Items]
Cash and cash equivalents, Estimated Fair Value	3,163	0
Cash and cash equivalents and available for sale securities, Amortized Cost	18,128	17,883
Gross Unrealized Gains	2	30
Gross Unrealized Losses	(14)	(3)
Short-term investments, estimated fair value	14,953	17,910
Cash and cash equivalents and short term investments, Estimated Fair Value	18,116	17,910
Level 2: | U.S. government agencies
Debt Securities, Available-for-Sale [Line Items]
Cash and cash equivalents, Estimated Fair Value	0	0
Cash and cash equivalents and available for sale securities, Amortized Cost	12,069	21,703
Gross Unrealized Gains	0	27
Gross Unrealized Losses	(7)	(10)
Short-term investments, estimated fair value	12,062	21,720
Cash and cash equivalents and short term investments, Estimated Fair Value	$ 12,062	$ 21,720