Joint Venture and Equity Method Investment - Schedule of Intercompany Eliminations (Details) - USD ($) $ in Thousands		12 Months Ended
		Jan. 31, 2025		Jan. 31, 2024		Jan. 31, 2023
Noncontrolling Interest [Line Items]
Revenue		$ 759,249		$ 579,906		$ 424,336
Cost of revenue		85,140		59,708		51,680
Gross profit		674,109		520,198		372,656
Sales and marketing		384,295		356,393		309,992
Research and development		239,652		200,840		156,143
Total operating expenses		816,824		707,638		584,067
Loss from operations		(142,715)		(187,440)		(211,411)
Interest income		47,735		39,114		14,496
Other income, net		9,187		(12,241)		21,621
Provision for (benefit from) income taxes		(76,674)		265,145		4,030
Net loss		(9,119)		(429,536)		(181,792)
Net loss attributable to noncontrolling interest		(2,793)		(3,859)		(8,385)
Cash and cash equivalents		227,649	[1]	287,996	[1]	295,402
Property and equipment, net	[1]	4,013		2,954
Operating lease right-of-use assets		381	[1]	405
TOTAL ASSETS	[1]	1,399,263		1,321,403
Total liabilities	[1]	577,957		715,011
Variable Interest Entity, Primary Beneficiary
Noncontrolling Interest [Line Items]
Revenue		7,588		6,451		4,743
Cost of revenue		2,252		2,414		1,731
Gross profit		5,336		4,037		3,012
Sales and marketing		6,331		7,369		7,670
Research and development		1,841		5,338		6,818
General and administrative		4,520		1,864		10,515
Total operating expenses		12,692		14,571		25,003
Loss from operations		(7,356)		(10,534)		(21,991)
Interest income		814		1,078		659
Other income, net		483		858		1,633
Net loss before income taxes		(6,059)		(8,598)		(19,699)
Provision for (benefit from) income taxes		15		16		0
Net loss		(6,074)		(8,614)		(19,699)
Net loss attributable to noncontrolling interest		(2,793)		(3,859)		$ (8,385)
Cash and cash equivalents		37,991		43,896
Property and equipment, net		322		489
Operating lease right-of-use assets		381		405
Other assets		7,804		6,378
TOTAL ASSETS		46,498		51,168
Total liabilities		$ 10,278		$ 10,079

[1] (1) As of January 31, 2025 and January 31, 2024, the consolidated balance sheet includes assets of the consolidated variable interest entity, GitLab Information Technology (Hubei) Co., LTD (“JiHu”), of $46.5 million and $51.2 million, respectively, and liabilities of $10.3 million and $10.1 million respectively. The assets of JiHu can be used only to settle obligations of JiHu and creditors of JiHu do not have recourse against the general credit of the Company. Refer to “Note 11. Joint Venture and Equity Method Investment” for further discussion.