Revenue and Contract Balances - Disaggregation of Revenue by Geography (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2023	Oct. 31, 2022
Disaggregation of Revenue [Line Items]
Revenue	$ 164,165	$ 115,323	$ 446,979	$ 296,083
Revenue from Contract with Customer Benchmark | Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
% of Revenue	100.00%	100.00%	100.00%	100.00%
United States
Disaggregation of Revenue [Line Items]
Revenue	$ 103,461	$ 73,657	$ 284,917	$ 194,606
United States | Revenue from Contract with Customer Benchmark | Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
% of Revenue	63.00%	64.00%	64.00%	66.00%
International
Disaggregation of Revenue [Line Items]
Revenue	$ 60,704	$ 41,666	$ 162,062	$ 101,477
International | Revenue from Contract with Customer Benchmark | Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
% of Revenue	37.00%	36.00%	36.00%	34.00%