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Fair Value Measurements (Tables)
 9 Months Ended
Oct. 31, 2023
Fair Value Disclosures [Abstract]  
Schedule of financial assets and liabilities measured at fair value on a recurring basis
The following tables present information about the Company’s financial assets that have been measured at fair value on a recurring basis as of October 31, 2023 and January 31, 2023 and indicate the fair value hierarchy of the valuation inputs utilized to determine such fair value (in thousands):
Fair Value Measurement as of October 31, 2023
Level 1
Level 2
Level 3
Total
Financial Assets:
Cash and cash equivalents:
Money market funds $244,707 $— $— $244,707 
Short-term investments:
U.S. government treasury securities
1,447,036 — — 1,447,036 
Total financial assets
$1,691,743 $— $— $1,691,743 

Fair Value Measurement as of January 31, 2023
Level 1
Level 2
Level 3
Total
Financial Assets:
Cash and cash equivalents:
Money market funds $268,985 $— $— $268,985 
Short-term investments:
U.S. government treasury securities
1,380,804 — — 1,380,804 
Total financial assets
$1,649,789 $— $— $1,649,789 
Schedule of Marketable Securities
The following table summarizes the amortized cost and fair value of the Company’s short-term investments by remaining contractual maturity as of October 31, 2023 and January 31, 2023 (in thousands):
October 31, 2023January 31, 2023
Amortized
Cost		Unrealized
Losses		Fair ValueAmortized
Cost		Unrealized
Losses		Fair Value
Due within one year$638,309 $(1,553)$636,756 $1,383,226 $(2,422)$1,380,804 
Due after one year and within three years818,757 (8,478)810,279 — — — 
Total short-term investments$1,457,066 $(10,031)$1,447,035 $1,383,226 $(2,422)$1,380,804