Deep 6 AI vs Mendel (2026)
Two platforms that read unstructured clinical text to answer research questions, separated by what they are ultimately for. Deep 6 is a trial platform, covering feasibility and cohort building at design through to matching patients and sites in real time across therapeutic areas. Mendel is an abstraction platform of which trial prescreening is one application, with a hybrid architecture pairing language models and symbolic reasoning specifically because generation alone produces confident errors, and it can run inside the customer's own environment. If the mandate is enrol more patients, Deep 6 is built end to end for that. If it is stop paying clinicians to read charts, across trials and observational research alike, Mendel is the broader capability and the safer residency answer. Neither publishes how often an eligible patient never surfaces at all.
- It reads unstructured clinical data across notes, pathology, genomics and laboratory reports to match patients and sites in real time, across therapeutic areas rather than one specialty.
- Functional coverage spans feasibility and cohort building at study design through to enrolment, so sponsors and sites use the same platform.
- It quantifies how much decisive eligibility information sits in unstructured data, which is the argument for reading notes rather than filtering codes.
- The architecture is deliberately hybrid, pairing language models with symbolic reasoning over a clinical hypergraph because generation alone produces confident abstraction errors.
- It can be hosted inside the customer's own environment, which is the strongest residency position among the trial and abstraction vendors here.
- The capability serves cohort building and observational research as well as prescreening, so one platform covers several research functions.
This comparison is published by AI Health Index, an independent research platform that compares healthcare AI vendors objectively. Deep 6 AI and Mendel 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
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 Deep 6 AI its top capability grade on AI Centrality. Set against Mendel, Deep 6 AI does not grade higher on any scored axis, though the two are level on several axes, including AI Centrality, HIPAA and BAA Posture and Security Certifications and Trust Center. Its thinnest published disclosure sits on Model Supply Chain Disclosure and AI Liability and Recourse. 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 Mendel its top capability grade on several axes, including AI Centrality, Autonomy and Oversight Model and Model and Technology Transparency. Set against Deep 6 AI, Mendel grades higher on several axes, including Autonomy and Oversight Model, Model and Technology Transparency and 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
Questions buyers ask
Should we choose Deep 6 AI or Mendel?
The AI Health Index grades Mendel higher than Deep 6 AI on every axis that separates them, several axes, including Autonomy and Oversight Model, Model and Technology Transparency and Model Supply Chain Disclosure. Deep 6 AI does not grade higher on any scored axis.
Where do Deep 6 AI and Mendel differ most?
The widest separation the AI Health Index records between Deep 6 AI and Mendel is on Model and Technology Transparency, where Deep 6 AI grades C and Mendel grades A. 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 Deep 6 AI and Mendel grade the same?
The AI Health Index grades Deep 6 AI and Mendel the same on several axes, including AI Centrality, HIPAA and BAA Posture and Security Certifications and Trust Center. 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 Deep 6 AI and Mendel not disclosed?
At the last review, at least one of Deep 6 AI and Mendel published thin or absent detail on Model Supply Chain Disclosure and AI Liability and Recourse. 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 Decision Support page.
Both should be asked for the false negative rate on eligibility screening, which neither publishes and which is the only real measure of a matching system, since a patient who was eligible and never surfaced is invisible in every metric either reports. Deep 6 publishes no attestation scoped to the platform, no business associate terms and no governance framework; Mendel publishes no security attestation or trust centre. Both inherit documentation bias, so patients with sparse or fragmented records are systematically less likely to be found regardless of eligibility.