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Description of Business (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Dec. 15, 2025	Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2024
Subsidiary, Sale of Stock [Line Items]
Underwriting discounts and commissions payable		$ 9,162	$ 0	$ 0
Total stock-based compensation expense, net of amounts capitalized		$ 259,824	$ 9,364	$ 11,846
Anticipated tax withholding and remittance obligations	$ 140,900
Dual-trigger RSUs
Subsidiary, Sale of Stock [Line Items]
Total stock-based compensation expense, net of amounts capitalized	$ 239,000
IPO Warrants
Subsidiary, Sale of Stock [Line Items]
Exercise price of warrants (in dollars per share)	$ 2.73
Number of securities called by warrants (in shares)	1,953,463
Common Stock
Subsidiary, Sale of Stock [Line Items]
Shares issued during period after conversion of convertible securities	69,852,421	70,351,774
IPO
Subsidiary, Sale of Stock [Line Items]
Number of shares issued in transaction	34,615,384
Sale of stock, price per share (in USD per share)	$ 14.00
Consideration received	$ 282,100
Underwriting discounts and commissions payable	18,500
Deferred offering costs reclassified	$ 9,200
IPO \| Company
Subsidiary, Sale of Stock [Line Items]
Number of shares issued in transaction	21,468,038
IPO \| Selling Stockholders
Subsidiary, Sale of Stock [Line Items]
Number of shares issued in transaction	13,147,346