Preferred Stock - Schedule of Preferred Stock (Details) - USD ($) $ / shares in Units, $ in Thousands	Jan. 31, 2022	Jul. 01, 2021	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Temporary Equity [Line Items]
Shares Authorized (in shares)	0		168,985,413
Shares Issued (in shares)	0		167,058,113
Shares Outstanding (in shares)	0		167,058,113	113,523,948	97,686,390
Liquidation Amount	$ 0		$ 622,414
Carrying Value	$ 0		$ 621,139	$ 201,826	$ 149,955
Series Seed
Temporary Equity [Line Items]
Shares Authorized (in shares)			10,962,327
Shares Issued (in shares)			10,962,327
Shares Outstanding (in shares)			10,962,327
Liquidation Amount			$ 2,577
Carrying Value			$ 2,553
Original Issuance Price per Share (in USD per share)			$ 0.2351
Series A
Temporary Equity [Line Items]
Shares Authorized (in shares)			12,855,123
Shares Issued (in shares)			12,855,123
Shares Outstanding (in shares)			12,855,123
Liquidation Amount			$ 10,000
Carrying Value			$ 9,948
Original Issuance Price per Share (in USD per share)			$ 0.7779
Series B
Temporary Equity [Line Items]
Shares Authorized (in shares)			20,288,700
Shares Issued (in shares)			20,288,700
Shares Outstanding (in shares)			20,288,700
Liquidation Amount			$ 24,338
Carrying Value			$ 24,241
Original Issuance Price per Share (in USD per share)			$ 1.1996
Series C
Temporary Equity [Line Items]
Shares Authorized (in shares)			40,338,867
Shares Issued (in shares)			40,338,867
Shares Outstanding (in shares)			40,338,867
Liquidation Amount			$ 70,433
Carrying Value			$ 69,845
Original Issuance Price per Share (in USD per share)			$ 1.7460
Series D
Temporary Equity [Line Items]
Shares Authorized (in shares)			29,078,931
Shares Issued (in shares)			29,078,931
Shares Outstanding (in shares)			29,078,931
Liquidation Amount			$ 95,476
Carrying Value			$ 95,239
Original Issuance Price per Share (in USD per share)			$ 3.2833
Series E
Temporary Equity [Line Items]
Shares Authorized (in shares)			31,405,183
Shares Issued (in shares)			31,405,183
Shares Outstanding (in shares)		31,405,183	31,405,183
Liquidation Amount			$ 152,683
Carrying Value			$ 152,539
Original Issuance Price per Share (in USD per share)	$ 4.8617		$ 4.8617
Series F
Temporary Equity [Line Items]
Shares Authorized (in shares)			24,056,282
Shares Issued (in shares)			22,128,982
Shares Outstanding (in shares)			22,128,982
Liquidation Amount			$ 266,907
Carrying Value			$ 266,774
Original Issuance Price per Share (in USD per share)	$ 12.0614		$ 12.0614