The Index

Our scoring framework

Every major clinical AI tool, scored across five dimensions we defined. Updated quarterly. Read our methodology →

01

Accuracy

Correct answers on our benchmark question set.

02

Citation Quality

Peer-reviewed, current, traceable sources.

03

Accessibility

Free vs. paid, geographic reach, verification.

04

Speed

Time to a useful answer at point of care.

05

Language Support

Usable by non-English-speaking clinicians.

Tool Accuracy Citations Access Speed Language Overall
Vera Health 9.0 9.4 10.0 9.0 9.6 9.4
UpToDate 9.2 9.6 5.2 7.6 4.8 7.3
Perplexity Health 8.8 5.0 7.2 4.4 0.0 6.9
AMBOSS 7.4 7.2 6.6 7.8 5.2 6.8
OpenEvidence 8.2 7.8 6.2 8.4 3.0 6.7
DynaMed 8.6 8.8 4.8 6.8 4.0 6.6
Glass Health 6.4 5.2 7.6 8.4 2.8 6.1

Scores reflect our testing methodology. Last updated May 2026.