Corti vs Microsoft Dragon Copilot (2026)
Build the documentation layer or buy it, and this pair is the clearest statement of that choice in the category. Corti sells healthcare foundation models as infrastructure through documented interfaces, with sovereign cloud, any cloud or on premise deployment, language specific models built to handle accent variation, and an architecture described as a mechanism rather than as advanced reasoning. Dragon Copilot is the finished product with the widest reach, role based editions for physicians, nurses and radiologists, native embedding in the dominant record system and the fullest published account of its own failure modes anywhere in this lane. For most health systems Microsoft is the answer and Corti is not really a competitor. For an organisation that intends to own its clinical AI stack, or a software vendor embedding documentation in its own product, Corti is selling the thing Microsoft will not.
- It sells models as infrastructure through documented interfaces, so a health system or software vendor can build the documentation layer rather than adopt someone else's interface.
- Sovereign cloud, any cloud or on premise deployment removes the data residency question rather than governing it, and language specific models address accent degradation by engineering.
- Named and dated attestations, and an architecture described mechanically as a staged loop rather than as advanced reasoning.
- It is a finished product with the widest reach in the category, role based editions for physicians, nurses and radiologists, native embedding in the dominant record system and availability across ten countries.
- The published documentation set names its own failure modes, including hallucinated details in summarization and underperformance on accents and dialects not well represented in training.
- For an organisation that wants documentation working next quarter rather than a platform to build on, there is nothing to construct.
This comparison is published by AI Health Index, an independent research platform that compares healthcare AI vendors objectively. Corti and Microsoft Dragon Copilot are each graded against the same capability taxonomy, from each vendor's own public materials and the regulatory record, under the AI Health Index verification standard. No vendor pays for placement, and no vendor has reviewed this page. How this evidence is graded
Plain facts
| Fact | Corti | Microsoft Dragon Copilot |
|---|---|---|
| Primary category | Ambient Scribes | Ambient Scribes |
| Founded | 2016 | 2025 |
| Headquarters | Copenhagen, Denmark | Redmond, Washington, United States |
| Website | corti.ai | microsoft.com |
Side by Side
Each record in one paragraph
Written to be quoted whole. Each paragraph states what the AI Health Index verified about the vendor, with the caveats attached. Generated from this pair’s live capability grades, so it moves when a grade moves.
The AI Health Index awards Corti its top capability grade on several axes, including AI Centrality, Autonomy and Oversight Model and Model and Technology Transparency. Set against Microsoft Dragon Copilot, Corti grades higher on several axes, including Autonomy and Oversight Model, Model and Technology Transparency and Security Certifications and Trust Center. Grades reflect evidence the AI Health Index could verify at the last review, so a low grade records disclosure the vendor has not published rather than a capability it has been shown to lack.
Source: AI Health Index, August 2026
The AI Health Index awards Microsoft Dragon Copilot its top capability grade on several axes, including AI Centrality, Model Supply Chain Disclosure and FDA and Regulatory Status. Set against Corti, Microsoft Dragon Copilot grades higher on several axes, including Model Supply Chain Disclosure, Clinical and Operational Evidence and HIPAA and BAA Posture. Grades reflect evidence the AI Health Index could verify at the last review, so a low grade records disclosure the vendor has not published rather than a capability it has been shown to lack.
Source: AI Health Index, August 2026
Questions buyers ask
Should we choose Corti or Microsoft Dragon Copilot?
On the axes where the AI Health Index separates them, Corti grades higher on several axes, including Autonomy and Oversight Model, Model and Technology Transparency and Security Certifications and Trust Center, and Microsoft Dragon Copilot grades higher on several axes, including Model Supply Chain Disclosure, Clinical and Operational Evidence and HIPAA and BAA Posture. Microsoft Dragon Copilot leads on the greater share of scored axes, but the split means the decision turns on which constraint is binding rather than on an overall winner.
Where do Corti and Microsoft Dragon Copilot differ most?
The widest separation the AI Health Index records between Corti and Microsoft Dragon Copilot is on EHR and Interoperability Depth, where Corti grades C and Microsoft Dragon Copilot grades A. That axis sits in the Integration and Deployment group, so it should carry the most weight for a buyer whose binding constraint is how the product lands in the stack already in place.
Where do Corti and Microsoft Dragon Copilot grade the same?
The AI Health Index grades Corti and Microsoft Dragon Copilot the same on several axes, including AI Centrality, AI Safety and PHI Stewardship and AI Liability and Recourse. Neither holds an advantage the index can evidence on those axes, so they should not carry weight in a selection between these two.
Related comparisons
Other published head to head assessments involving these vendors or their closest peers. The full set for this category is on the Ambient Scribes page.
These sit at different layers and the comparison is only real for a buyer choosing between deploying a product and building on a platform, which is a strategic decision rather than a procurement one. Corti's evidence for the ambient documentation product specifically is thin, with a vendor generated note bloat figure and commissioned market research rather than clinical study.
Its compliance framing is European first, so a United States buyer should establish business associate terms explicitly. Microsoft publishes no rate card, and its own randomized efficiency result was 1.7 percent reduction in time in note and not statistically significant.