Stockholders' Equity and Equity Incentive Plans (Tables)

12 Months Ended

Jan. 31, 2026

Equity [Abstract]

Schedule of Stock by Class Reserved for Future Issuance

We have the following shares of Class A common stock reserved for future issuance:

	As of January 31,
	2026	2025
Stock options outstanding	1,542,753	2,394,918
RSUs outstanding	20,106,305	23,870,513
ESPP purchase rights outstanding	1,293,529	2,311,567
Remaining shares available for future issuance under the 2011 and 2019 plan	66,954,929	56,022,675
Remaining shares available for future issuance under the ESPP	20,664,260	18,807,595
Total shares of Class A common stock reserved	110,561,776	103,407,268

Schedule of Stock Option Activity Under Equity Incentive Plan

A summary of stock option activity under our equity incentive plan and related information is as follows:

	Stock Options
	Outstanding Stock Options	Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value
	(in thousands, except share, life and per share data)
Outstanding as of January 31, 2025	2,394,918	$	9.02	2.6	$	187,284
Exercised	(842,567)	$	2.95		$	66,978
Canceled/forfeited/expired	(9,598)	$	94.87
Outstanding and Exercisable as of January 31, 2026	1,542,753	$	11.81	2.2	$	124,080

Schedule of Restricted Stock Units (RSUs) Activity Under Equity Incentive Plan

A summary of RSU activity under our equity incentive plan and related information is as follows:

	RSUs
	Unvested RSUs	Weighted-Average Grant Date Fair Value Per Share
Unvested as of January 31, 2025	23,870,513	$	73.48
Granted	10,695,967	$	80.21
Vested	(11,309,015)	$	76.45
Forfeited	(3,151,160)	$	72.94
Unvested as of January 31, 2026	20,106,305	$	75.51

Schedule of Assumptions for Estimating Fair Value of ESPP Purchase Rights

We estimated the fair value of ESPP purchase rights using a Black-Scholes option-pricing model with the following assumptions:

	Year Ended January 31,
	2026	2025	2024
Expected term (years)	0.5 - 2.0	0.5 - 2.0	0.5 - 2.0
Expected volatility	31.2% - 33.0%	28.4% - 43.3%	30.0% - 57.6%
Risk-free interest rate	3.5% - 4.3%	4.2% - 5.4%	4.6% - 5.4%
Expected dividend yield	—	—	—

Schedule of Stock-based Compensation Expense

The stock-based compensation expense by line item in the accompanying consolidated statements of operations is summarized as follows:

	Year Ended January 31,
	2026		2025		2024
	(in thousands)
Cost of revenue	$	96,273	$	124,561	$	143,798
Research and development	287,172		333,767		336,309
Sales and marketing	254,976		319,631		381,298
General and administrative	122,355		153,350		195,756
Total stock-based compensation expense	760,776		931,309		1,057,161
Benefit from income taxes	(143,661)		(176,463)		(197,068)
Total stock-based compensation expense recorded to net income	$	617,115	$	754,846	$	860,093