Net Loss Per Share - Schedule of Potentially Dilutive Securities Excluded from Computation of Diluted Net Loss Per Share (Details) - shares	6 Months Ended
	Jul. 31, 2026	Jul. 31, 2025
Stock Options with Service only Conditions
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities excluded from calculation of diluted net loss per share	3,264,797	4,419,888
Unvested RSUs with service-only conditions
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities excluded from calculation of diluted net loss per share	7,669,829	5,288,879
Stock Options with Performance or Market Conditions
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities excluded from calculation of diluted net loss per share	474,975	779,488
Unvested Early Exercise of Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities excluded from calculation of diluted net loss per share	13,231	31,754
Unvested RSAs with service-only conditions
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities excluded from calculation of diluted net loss per share	52,054	0
Unvested RSUs with performance conditions
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities excluded from calculation of diluted net loss per share	6,878,491	7,364,442