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Cash Equivalents and Short-Term Investments - Schedule of Short Term Investments by Contractual Maturity (Details) - USD ($) $ in Thousands | Oct. 31, 2025 | Jan. 31, 2025
--- | --- | ---
Amortized cost |  |
Due within 1 year | $ 586,551 | $ 590,193
Due between 1 year to 2 years | 392,399 | 174,027
Total | 978,950 | 764,220
Fair Value |  |
Due within 1 year | 587,055 | 590,832
Due between 1 year to 2 years | 393,022 | 173,896
Total | $ 980,077 | $ 764,728

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