Stockholders' Equity - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		12 Months Ended
	Apr. 30, 2026	Apr. 30, 2025	Jan. 31, 2026
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward]
Beginning balance (in shares)	39,283,485
Granted (in shares)	1,010,099
Exercised (in shares)	(2,451,289)
Cancelled/forfeited/expired (in shares)	(386,435)
Ending balance (in shares)	37,455,860		39,283,485
Vested and expected to vest as of end of period (in shares)	37,455,860
Exercisable as of end of period (in shares)	30,776,070
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Beginning balance (in dollars per share)	$ 13.91
Granted (in dollars per share)	9.97
Exercised (in dollars per share)	6.64
Cancelled/forfeited/expired (in dollars per share)	16.74
Ending balance (in dollars per share)	14.25		$ 13.91
Vested and expected to vest as of end of period (in dollars per share)	14.25
Exercisable as of end of period (in dollars per share)	$ 13.32
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Additional Disclosures [Abstract]
Outstanding, weighted average remaining contractual term (in years)	5 years 8 months 12 days		5 years 8 months 12 days
Vested and expected to vest as end of period, weighted average remaining contractual term (in years)	5 years 8 months 12 days
Vested and expected to vest as end of period, weighted average remaining contractual term (in years)	5 years 3 months 18 days
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest [Abstract]
Outstanding, aggregate intrinsic value	$ 145,849		$ 55,743
Exercises, aggregate intrinsic value	16,981	$ 2,500
Vested and expected to vest, aggregate intrinsic value	145,849
Exercisable, aggregate intrinsic value	$ 135,182