Equity Incentive Plans and Stock-Based Compensation - Summary of Stock Option Activity (Details) $ / shares in Units, shares in Thousands, $ in Thousands	6 Months Ended	12 Months Ended
	Jul. 31, 2022 USD ($) $ / shares shares	Jan. 31, 2022 USD ($) $ / shares shares
Stock Options
Outstanding, beginning balance (in shares) | shares	14,544
Granted (in shares) | shares	2,580
Exercised (in shares) | shares	(2,701)
Forfeited (in shares) | shares	(419)
Outstanding, ending balance (in shares) | shares	14,004	14,544
Weighted- Average Exercise Price
Outstanding, beginning balance (in dollars per share) | $ / shares	$ 1.64
Granted (in dollars per share) | $ / shares	10.14
Exercised (in dollars per share) | $ / shares	1.69
Forfeited (in dollars per share) | $ / shares	2.44
Outstanding, ending balance (in dollars per share) | $ / shares	$ 3.17	$ 1.64
Vested and exercisable, Number of Stock Options (in shares) | shares	7,331
Vested and exercisable, Weighted-average exercise price (in dollars per share) | $ / shares	$ 1.69
Outstanding, Weighted-Average Remaining Contractual Life (years)	7 years 7 months 6 days	7 years 7 months 6 days
Vested and exercisable, Weighted-Average Remaining Contractual Life (years)	6 years 6 months
Outstanding, Aggregate Intrinsic Value | $	$ 212,254	$ 507,419
Vested and exercisable, Aggregate Intrinsic Value | $	$ 121,955