Regard vs Zus Health (2026)
These are two steps in one pipeline and buying them out of order is the mistake worth avoiding. Zus assembles the record, pulling from thousands of provider sites, prescription fills and admission alerts, normalising it and publishing a match rate that admits identity resolution is imperfect. Regard reads the assembled chart and recommends diagnoses, writing the note around them, with a structural gate where the clinician accepts or declines each one and certified interoperability behind it. A diagnostic recommendation generated from an incomplete chart is confident reasoning from a partial picture, and neither vendor publishes how complete the record is at the moment the recommendation is made. If your outside records arrive sparsely, fix that before adding a system that draws conclusions from what did arrive.
- It recommends diagnoses from the full record rather than assembling it, on the premise that clinicians see a fraction of the chart, and writes the note around the recommendation.
- The oversight gate is structural, with the clinician accepting or declining each recommendation and the vendor reporting how often they do.
- Interoperability is certified rather than claimed, with named deployments and quantified site level results.
- It assembles the longitudinal record in the first place, pulling from thousands of provider sites, prescription fills and admission alerts and normalising the result.
- It publishes its match rate rather than implying identity resolution is solved, and links every summarised point to the underlying record.
- It is a platform other products build on, with distinct access routes for care teams, developers and analytics.
This comparison is published by AI Health Index, an independent research platform that compares healthcare AI vendors objectively. Regard and Zus Health 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 | Regard | Zus Health |
|---|---|---|
| Primary category | Clinical Summarization & Chart Review | Healthcare Administrative Automation |
| Founded | 2017 | Not recorded |
| Headquarters | Los Angeles and New York City, US | Not recorded |
| Website | regard.com | zushealth.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 Regard its top capability grade on AI Centrality and EHR and Interoperability Depth. Set against Zus Health, Regard grades higher on AI Centrality, Clinical and Operational Evidence and Security Certifications and Trust Center. Its thinnest published disclosure sits on Model Supply Chain Disclosure. 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 Zus Health its top capability grade on EHR and Interoperability Depth. Set against Regard, Zus Health grades higher on several axes, including Model Supply Chain Disclosure, AI Safety and PHI Stewardship 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 Regard or Zus Health?
On the axes where the AI Health Index separates them, Regard grades higher on AI Centrality, Clinical and Operational Evidence and Security Certifications and Trust Center, and Zus Health grades higher on several axes, including Model Supply Chain Disclosure, AI Safety and PHI Stewardship and HIPAA and BAA Posture. Zus Health 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 Regard and Zus Health differ most?
The widest separation the AI Health Index records between Regard and Zus Health is on AI Centrality, where Regard grades A and Zus Health grades C. That axis sits in the AI Capability group, so it should carry the most weight for a buyer whose binding constraint is how much of the work the model itself is trusted to do.
Where do Regard and Zus Health grade the same?
The AI Health Index grades Regard and Zus Health the same on several axes, including Autonomy and Oversight Model, Model and Technology Transparency and AI Governance and Bias Disclosure. Neither holds an advantage the index can evidence on those axes, so they should not carry weight in a selection between these two.
What have Regard and Zus Health not disclosed?
At the last review, at least one of Regard and Zus Health published thin or absent detail on Model Supply Chain Disclosure. The AI Health Index treats an absent disclosure as a gap in the public record rather than a failure of the product, so these are the axes to get in writing during diligence instead of inferring from the grade.
Related comparisons
Other published head to head assessments involving these vendors or their closest peers. The full set for this category is on the Clinical Summarization & Chart Review page.
The sequencing point matters clinically here: a system that recommends diagnoses from an incomplete chart is confidently reasoning from a partial picture, and neither vendor publishes what proportion of records are missing at the moment a recommendation is generated. Regard publishes no accuracy figure, model card or validation publication, and its certification examines record system criteria rather than diagnostic performance. Zus publishes no security attestation. Neither publishes what proportion of surfaced findings prove clinically actionable.