Fair Value Measurements (Details) - USD ($) $ in Thousands	Jul. 31, 2026	Jan. 31, 2026
Assets:
Total assets	$ 129,844	$ 308,535
Level 1
Assets:
Total assets	129,844	308,535
Level 2
Assets:
Total assets	0	0
Level 3
Assets:
Total assets	0	0
Money market funds
Assets:
Cash equivalents and restricted cash	54,844	308,535
Money market funds | Level 1
Assets:
Cash equivalents and restricted cash	54,844	308,535
Money market funds | Level 2
Assets:
Cash equivalents and restricted cash	0	0
Money market funds | Level 3
Assets:
Cash equivalents and restricted cash	0	$ 0
Certificate of deposit
Assets:
Cash equivalents and restricted cash	75,000
Certificate of deposit | Level 1
Assets:
Cash equivalents and restricted cash	75,000
Certificate of deposit | Level 2
Assets:
Cash equivalents and restricted cash	0
Certificate of deposit | Level 3
Assets:
Cash equivalents and restricted cash	$ 0