Net Loss Per Share Attributable to Common Stockholders - Schedule of Anti-Dilutive Common Stock Equivalents Excluded from Computation of Diluted Net Loss Per Share (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2023	Oct. 31, 2022
Class A Common Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive common stock equivalents (in shares)	51,158	46,301	53,093	44,575
Class A Common Stock | Unvested RSUs
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive common stock equivalents (in shares)	36,911	31,022	38,137	29,307
Class A Common Stock | Outstanding stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive common stock equivalents (in shares)	13,207	13,812	13,764	13,913
Class A Common Stock | Shares subject to repurchase from RSAs and early exercised stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive common stock equivalents (in shares)	52	104	56	355
Class A Common Stock | Shares issuable under ESPP
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive common stock equivalents (in shares)	714	936	762	851
Class A Common Stock | Returnable shares issued in connection with business acquisition
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive common stock equivalents (in shares)	274	427	374	149
Class B Common Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive common stock equivalents (in shares)	0	0	0	0
Class B Common Stock | Unvested RSUs
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive common stock equivalents (in shares)	0	0	0	0
Class B Common Stock | Outstanding stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive common stock equivalents (in shares)	0	0	0	0
Class B Common Stock | Shares subject to repurchase from RSAs and early exercised stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive common stock equivalents (in shares)	0	0	0	0
Class B Common Stock | Shares issuable under ESPP
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive common stock equivalents (in shares)	0	0	0	0
Class B Common Stock | Returnable shares issued in connection with business acquisition
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive common stock equivalents (in shares)	0	0	0	0