Income Taxes - Schedule of Reconciliation of Effective Tax Rates (Details)	12 Months Ended
	Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2024
Income Tax Disclosure [Abstract]
US federal statutory income tax rate	21.00%	21.00%	21.00%
Stock based compensation expense	(5.40%)	(3.30%)	(3.60%)
Changes in valuation allowances	(23.30%)	(21.20%)	(21.40%)
Research and development credits		7.40%	3.50%
Foreign tax effects		(3.90%)	0.00%
Other	(0.10%)	(1.90%)	(1.00%)
Effective income tax rate	(2.60%)	(1.90%)	(1.50%)