Cover - shares	6 Months Ended
	Jun. 30, 2025	Aug. 05, 2025
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2025
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	Q2
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	001-42130
Entity Registrant Name	Tempus AI, Inc.
Entity Central Index Key	0001717115
Current Fiscal Year End Date	--12-31
Entity Incorporation, State or Country Code	NV
Entity Tax Identification Number	47-4903308
Entity Address, Address Line One	600 West Chicago Avenue
Entity Address, Address Line Two	Suite 510
Entity Address, City or Town	Chicago
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60654
City Area Code	800
Local Phone Number	976-5448
Title of 12(b) Security	Class A common stock, $0.0001 par value per share
Trading Symbol	TEM
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Common Class A [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		168,683,769
Common Class B [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		5,043,789