Revenue and Contract Balances - Disaggregation of Revenue by Geography (Details) - USD ($) $ in Thousands	12 Months Ended
Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2023
Disaggregation of Revenue [Line Items]
Revenue	$ 821,461	$ 621,154	$ 422,179
Revenue from Contract with Customer Benchmark \| Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
% of Revenue	100.00%	100.00%	100.00%
U.S.
Disaggregation of Revenue [Line Items]
Revenue	$ 519,928	$ 397,885	$ 276,443
U.S. \| Revenue from Contract with Customer Benchmark \| Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
% of Revenue	63.00%	64.00%	65.00%
International
Disaggregation of Revenue [Line Items]
Revenue	$ 301,533	$ 223,269	$ 145,736
International \| Revenue from Contract with Customer Benchmark \| Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
% of Revenue	37.00%	36.00%	35.00%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details