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Accrued Expenses and Other Current Liabilities - Summary of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands | Apr. 30, 2026 | Oct. 31, 2025
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Payables and Accruals [Abstract] |  |
Research and development expenses | $ 13,262 | $ 9,397
Employee compensation and related benefits | 2,150 | 4,053
Professional fees | 847 | 1,229
Other | 953 | 577
Income taxes payable |  | 19
Total accrued expenses and other current liabilities | $ 17,212 | $ 15,275

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