Microsoft Dragon Copilot vs TORTUS (2026)
Both treat errors seriously and handle them differently. Microsoft names its failure modes in white papers, from omitted findings to hallucinated details, and asks the clinician to review the draft. TORTUS filters before the clinician sees anything: the Shell checks each statement against the consultation and removes what it cannot support, with 92.7 percent of detected hallucinations removed on the live platform and a 75 percent reduction in major hallucinations reported in npj Digital Medicine. TORTUS also co ran a nine site NHS evaluation across more than 17,000 patients and was certified as a UKCA Class IIa medical device in June 2026. The constraint is geography. TORTUS is built around the NHS, so for a US health system Dragon Copilot is the practical choice, and for an NHS organization TORTUS is built for that setting.
- It is available widely, embedded natively in Epic, reaching other EHRs through SMART on FHIR and a partner Developer Kit, with clinician availability in ten countries.
- Separate editions serve physicians, nurses and radiologists, with flowsheet capture at the bedside, multilingual multi party capture, and generated referral and patient letters.
- Its limits are written down, with transparency, privacy, security and subprocessor papers specific to the product and its intended and unsupported uses listed.
- It filters hallucinations before the clinician sees the draft and publishes how well that works, with 92.7 percent of detected hallucinations removed on the live platform and a 75 percent reduction in major hallucinations in a peer reviewed journal.
- The evidence is prospective, multi site and publicly funded, spanning nine clinical sites and more than 17,000 patients with NHS England backing and independent evaluation, plus a pediatric study at Great Ormond Street Hospital.
- Accent performance was tested by the deploying hospital, with Great Ormond Street Hospital stating publicly that its evaluation covered a wide variety of accents.
This comparison is published by AI Health Index, an independent research platform that compares healthcare AI vendors objectively. Microsoft Dragon Copilot and TORTUS 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 | Microsoft Dragon Copilot | TORTUS |
|---|---|---|
| Primary category | Ambient Scribes | Ambient Scribes |
| Founded | 2025 | 2022 |
| Headquarters | Redmond, Washington, United States | London, United Kingdom |
| Website | microsoft.com | tortus.ai |
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.
Microsoft Dragon Copilot
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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.
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
TORTUS is a UK clinical AI company built around NHS deployment, with over 2.5 million consultations recorded across ambulance clinical hubs, emergency departments, outpatients and general practice, the last through the X-on partnership. Its OSLER agent combines voice, vision and click based interaction to read screen context and act inside the record rather than only writing to it, generating notes, referral letters and coding for clinician approval.
Source: AI Health Index, August 2026
Questions buyers ask
How do Microsoft Dragon Copilot and TORTUS work with the EHR?
For 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.
General practice is reached through the X-on Health partnership, where TORTUS powers Surgery Intellect, which works with X-on's Surgery Connect telephony. OSLER can also operate a record system through its interface using vision and clicks, a route to breadth that does not wait for each record vendor to build an integration. 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 Microsoft Dragon Copilot and TORTUS priced and sold?
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.
TORTUS Enterprise for NHS trusts costs £200,000 a year for up to 100,000 hours of audio processed, with unlimited user licenses across departments, then £2 an hour beyond that, and includes onboarding, site visits, template customization and a live reporting dashboard. 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 Microsoft Dragon Copilot and TORTUS handle patient data?
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.
In TORTUS's case, the company states that no model is trained on customer data and no data is retained, gives patient audio retained at rest as zero by design, and its data processing addendum says transcriptions, summaries and letters are not stored in the system; deleted data is cryptographically erased. 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 Microsoft Dragon Copilot and TORTUS cover?
For 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.
With TORTUS, the coverage is deep in the NHS and unevidenced elsewhere. 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.
TORTUS sells under UK data protection law. It does not claim HIPAA on its own material, publishes no business associate agreement, and limits its subscriber terms to clinicians authorized to treat patients in the United Kingdom. Its published data processing addendum carries the UK GDPR processor obligations in full, with an ICO registration number and an NHS Data Security and Protection Toolkit code, though those terms date from November 2024, before the device certification.
TORTUS took part in Phase II of the MHRA AI Airlock. Microsoft quotes Dragon Copilot per deal, while TORTUS lists an NHS trust price of £200,000 a year for up to 100,000 hours of audio on the G-Cloud framework. 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, and TORTUS's four minutes saved per consultation is reported by early adopters rather than measured in a controlled comparison.
An earlier version of this comparison described TORTUS as holding a self certified UKCA Class I registration. That statement was corrected on 15 September 2026; TORTUS was certified as a UKCA Class IIa medical device by a UK Approved Body on 24 June 2026. The same version said neither vendor publishes a rate card; TORTUS's NHS price is on its G-Cloud 15 listing, corrected on 11 October 2026.