Debt - SAFE Warrants (Details) - USD ($) $ in Thousands	9 Months Ended
	Oct. 31, 2025	Oct. 31, 2024
Debt Instrument [Line Items]
Proceeds from issuance of SAFEs	$ 155,000	$ 0
SAFE Warrants
Debt Instrument [Line Items]
Proceeds from issuance of SAFEs	$ 155,000
Issuance of warrant, interest rate	12.00%
Debt issuance costs	$ 2,900
Number of shares called by warrants (in shares)	1,216,187
SAFE Warrants | Class A common stock
Debt Instrument [Line Items]
Number of shares called by warrants (in shares)	7,851,008
Warrants converted to common shares, discount price	15.00%