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Stockholders' Equity - Schedule of Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2024	Oct. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 51,955	$ 52,866	$ 160,702	$ 150,569
Unrecognized expense, stock options	188		188
Unrecognized expense, RSUs	376,398		376,398
Total unrecognized stock-based compensation expense	376,586		$ 376,586
Weighted-Average Expected Recognition Period (in years)			3 years
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-Average Expected Recognition Period (in years)			3 years 3 months 18 days
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-Average Expected Recognition Period (in years)			3 years
Cost of revenues
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	354	413	$ 1,030	1,177
Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	28,087	29,384	88,872	83,928
Sales and marketing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	15,837	15,584	48,334	43,438
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 7,677	$ 7,485	$ 22,466	$ 22,026