Revenue and Contract Balances - Disaggregation of Revenue by Geography (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Disaggregation of Revenue [Line Items]
Revenue	$ 621,154	$ 422,179	$ 204,799
Revenue from Contract with Customer Benchmark | Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
% of Revenue	100.00%	100.00%	100.00%
US
Disaggregation of Revenue [Line Items]
Revenue	$ 397,885	$ 276,443	$ 140,034
US | Revenue from Contract with Customer Benchmark | Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
% of Revenue	64.00%	65.00%	68.00%
International
Disaggregation of Revenue [Line Items]
Revenue	$ 223,269	$ 145,736	$ 64,765
International | Revenue from Contract with Customer Benchmark | Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
% of Revenue	36.00%	35.00%	32.00%