Cover Page - shares	6 Months Ended
	Jun. 30, 2026	Jul. 31, 2026
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2026
Document Transition Report	false
Entity File Number	001-41691
Entity Registrant Name	Kodiak AI, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	98-1592112
Entity Address, Address Line One	1049 Terra Bella Avenue
Entity Address, City or Town	Mountain View,
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94043
City Area Code	650
Local Phone Number	209-8005
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		200,618,170
Entity Central Index Key	0001853138
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2026
Amendment Flag	false
Common stock, par value $0.0001 per share
Document Information [Line Items]
Title of 12(b) Security	Common stock, par value $0.0001 per share
Trading Symbol	KDK
Security Exchange Name	NASDAQ
Redeemable warrants, each exercisable for one share of common stock at an exercise price of $9.28
Document Information [Line Items]
Title of 12(b) Security	Redeemable warrants, each exercisable for one share of common stock at an exerciseprice of $9.28
Trading Symbol	KDKRW
Security Exchange Name	NASDAQ