Common Stock (Details)	12 Months Ended
	Jan. 31, 2022 vote $ / shares shares	Jun. 29, 2021 shares	Jan. 31, 2021 $ / shares shares
Class of Stock [Line Items]
Common stock, convertibility, percentage of outstanding share holders	6666.67%
Common stock, convertibility, number of years from final prospectus	7 years
Common stock, convertibility, percentage of shares outstanding	25.00%
Common stock, convertibility, death or disability period	12 months
Conversion of redeemable convertible preferred stock (in shares)	0		168,951,059
Exercise of common stock warrants (in shares)	0		954,884
Stock options outstanding (in shares)	42,422,473		37,231,191
Stock options available for future grants (in shares)	38,055,572		5,642,142
Total shares of common stock reserved	88,922,952		212,779,276
RSUs
Class of Stock [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, outstanding (in shares)	1,770,304		0
ESPP
Class of Stock [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, outstanding (in shares)	6,674,603		0
Total shares of common stock reserved		7,056,319
Class A Common Stock
Class of Stock [Line Items]
Common stock, shares authorized (in shares)	1,500,000,000		0
Common stock, number of voting rights | vote	1
Common stock, par or stated value per share (in USD per share) | $ / shares	$ 0.0001		$ 0.0001
Class B Common Stock
Class of Stock [Line Items]
Common stock, shares authorized (in shares)	300,000,000		264,659,000
Common stock, number of voting rights | vote	20
Common stock, par or stated value per share (in USD per share) | $ / shares	$ 0.0001		$ 0.0001