Stock-Based Compensation - Components of Stock Based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2023	Jan. 31, 2022
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total	$ 164,466	$ 87,889
Cost of revenue
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total	10,093	3,618
Research and development
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total	51,771	35,358
Sales and marketing
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total	40,115	15,460
General and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total	$ 62,487	$ 33,453