Corti vs Microsoft Dragon Copilot (2026)
Build the documentation layer or buy it. Corti sells its own speech, note generation and coding models as infrastructure through APIs and SDKs, with published usage pricing, EU or US hosting, a sovereign cloud that runs on any cloud or on premise, and FactsR for live fact by fact review; partners such as Dedalus and Voicepoint build finished products on it. Dragon Copilot is the finished product, with editions for physicians, nurses and radiologists, native Epic embedding with SMART on FHIR elsewhere, availability in ten countries, and white papers that name its failure modes. If you want documentation working next quarter across roles, start with Dragon Copilot. If you are building a product or need the models under your own roof, start with Corti.
- The models are sold as infrastructure through documented APIs and SDKs, so a health system or software vendor can build the documentation layer instead of adopting someone else's interface.
- Data can stay put, with EU or US hosting and no cross border transfer, per customer keys, and a sovereign cloud that runs on any cloud or on premise.
- The pipeline is described in its data processing agreement, from a speech model fine tuned on consultation audio to a coding model fine tuned on user corrections and a proprietary model that writes the note, with research published at EMNLP and INTERSPEECH.
- It is a finished product with editions for physicians, nurses and radiologists, native embedding in Epic, SMART on FHIR launch for other EHRs and availability in ten countries.
- Its documentation names its own failure modes, including omitted findings, hallucinated details and transcription errors from background noise and overlapping speech.
- There is nothing to construct, so a health system that wants documentation running next quarter does not need an engineering team.
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
Select any grade to read the note behind it.
Product updates
The latest logged changes from each vendor, newest first, each linked to its source.
Corti
-
Product / capability
Corti's Symphony for Medical Coding made ICD-O-3, the WHO oncology classification used by cancer registries, generally available in English, German and French editions, returning topography and morphology codes as a pair.
Source -
Model / architecture
Corti moved the frontier tier behind its corti-s1 and corti-s1-instant model IDs from GLM 5.2 to GLM 5.3 on its EU infrastructure.
Source -
Model / architecture
Corti released updated speech to text models for German, for Germany and Switzerland, and French, for France and Switzerland.
Source
Microsoft Dragon Copilot
-
Safety / governance
Microsoft's October release of Dragon Copilot for radiologists moves feature control into Dragon admin center, where admins can switch Chat, AI Draft and Optimization on or off and manage who has access.
Source
Each vendor in one paragraph
Written to be quoted whole. Each paragraph opens the AI Health Index profile of the vendor: what the product is, who buys it and what it does.
Corti is a Copenhagen company that builds healthcare AI models and sells them as infrastructure. Developers and EHR companies reach its speech recognition, clinical note generation, medical coding for ICD-10 and CPT, and an agent framework through APIs and SDKs, and Corti also ships its own application, Corti Assistant, including a version registered as a Class I medical device in the UK and the EU.
Source: AI Health Index, August 2026
Microsoft Dragon Copilot is the ambient clinical documentation assistant Microsoft created in March 2025 by merging DAX Copilot with Dragon Medical One, both from its 2022 acquisition of Nuance. It captures multi party, multilingual encounters and returns specialty specific draft notes, coding suggestions, clinical evidence summaries, referral letters and after visit summaries for clinician review inside the EHR.
Source: AI Health Index, August 2026
Questions buyers ask
How do Corti and Microsoft Dragon Copilot work with the EHR?
For Corti, the API streams audio, extracts facts and generates structured notes for a partner to write into its EHR.
With Microsoft Dragon Copilot, the product is embedded natively there, with Android and iOS parity and an Epic nursing app path for flowsheet capture, and the web application launches through SMART on FHIR R4. A partner Developer Kit lets a record system vendor embed the whole workflow, so recording is captured and the summary delivered without clinical content leaving the EHR. From the AI Health Index, drawn from each vendor's own published materials and the regulatory record, verified August 4, 2026. No vendor pays for placement.
How are Corti and Microsoft Dragon Copilot priced and sold?
Corti gives new accounts $50 of free credits and then charges pay as you go, with speech to text at $0.0065 a minute and note generation, medical coding and agents at $4 per million input tokens and $16 per million output tokens, all drawn from one credit wallet.
Microsoft sells Dragon Copilot through its direct sales team and through Cloud Solution Provider partners, and quotes each deal individually, with a customer's existing Microsoft agreements bearing on the price. From the AI Health Index, drawn from each vendor's own published materials and the regulatory record, verified August 4, 2026. No vendor pays for placement.
How do Corti and Microsoft Dragon Copilot handle patient data?
Corti's data processing agreement keeps personal data for the life of the contract and deletes it 30 days after termination.
Microsoft says the process meets the HIPAA deidentification standard, the GDPR standard for anonymization and Canadian guidance under PIPEDA and Quebec Law 25. The resulting data is used to improve Dragon Copilot's models, which Microsoft says are trained solely on anonymized data. From the AI Health Index, drawn from each vendor's own published materials and the regulatory record, verified August 4, 2026. No vendor pays for placement.
Which settings and specialties do Corti and Microsoft Dragon Copilot cover?
Corti started in emergency call triage and now documents primary care, telehealth and hospital ward care, with NHS Grampian using it on a ward at Inverurie Hospital and other NHS trusts working with it elsewhere in the UK. Language coverage is built model by model, with clinical speech models for Danish and French among them, rather than claimed across a long list.
With Microsoft Dragon Copilot, language support follows the product documentation. Only languages listed there are supported for speech to text and ambient summarization in a given locale, and multilingual mode must be enabled by an organization administrator before clinicians can use it. From the AI Health Index, drawn from each vendor's own published materials and the regulatory record, verified August 4, 2026. No vendor pays for placement.
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.
Corti's published evidence is research on its models and a 2026 KLAS First Look score of 93.3 from six companies building on it, with no study of the ambient product's effect on clinician time or note quality. Corti publishes no business associate agreement position, while Dragon Copilot is sold under Microsoft's business associate agreement. Microsoft quotes Dragon Copilot per deal. In the UCLA randomized trial, Microsoft DAX, now part of Dragon Copilot, reduced time in note by 1.7 percent, which was not statistically significant.