Tempus AI runs medical laboratories and a large database of patient health data, mostly in cancer care in the United States. Doctors order its genetic and other lab tests to help choose treatments for patients, and Tempus links the results to patients' medical records and uses artificial intelligence, or AI, to put them in context. It gets data through connections with more than 5,000 hospital and clinic sites that order its tests, and strips out personal details before using it in its other products.
Tempus has two product lines. Diagnostics, its testing business for cancer treatment and inherited cancer risk, brought in $955.4 million of its $1,271.8 million in 2025 revenue. Data and applications licenses that de-identified data to drug companies for research, helps them find patients for clinical trials, and sells AI tools that flag patients who may need care. It names Foundation Medicine, Caris Life Sciences, Guardant Health and Natera as testing competitors, and Flatiron Health, IQVIA and ConcertAI as data competitors.
Tempus had more than 3,800 employees at the end of 2025, with its headquarters in Chicago. It bought Ambry Genetics, a maker of tests for inherited cancer risk, in February 2025, and Paige, a company that uses AI to read pathology slides, in August 2025. It reported a net loss of $245.0 million for 2025.