Balance Sheet Components - Summary of Property and Equipment Net (Details) - USD ($) $ in Thousands		6 Months Ended
		Jul. 31, 2022	Jan. 31, 2022
Property Plant And Equipment [Line Items]
Total property and equipment		$ 25,046	$ 19,670
Less: accumulated depreciation and amortization		(5,699)	(3,773)
Property and equipment, net		19,347	15,897
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Total property and equipment		$ 1,278	1,266
Estimated Useful life		5 years
Computers Equipment and Software
Property Plant And Equipment [Line Items]
Total property and equipment		$ 534	532
Estimated Useful life		3 years
Capitalized Internal-use Software Development Costs
Property Plant And Equipment [Line Items]
Total property and equipment		$ 18,168	12,209
Estimated Useful life		5 years
Leasehold Improvements
Property Plant And Equipment [Line Items]
Total property and equipment		$ 5,058	5,008
Estimated Useful life		Shorter of useful life or lease term
Construction in Progress
Property Plant And Equipment [Line Items]
Total property and equipment	[1]	$ 8	$ 655

[1] This represents internal-use software not yet available for general release