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Medical AI ReportIndependent evaluations

3 shared rubrics · Updated September 2026

OpenEvidence vs UpToDate Expert AI

OpenEvidence and UpToDate Expert AI share 3 scored categories. OpenEvidence scores higher in all of them — 36–31 for clinical decision support AI, 40–36 for clinical evidence retrieval tools, 34–31 for medical AI apps out of 50. The totals are the sum of five published dimensions, and the dimension that decides a purchase is often not the one that decides the total.

Reviewed by Abishek Shahi, MD · Last reviewed September 2026

Disclosure: Abishek Shahi is Chief Medical Officer of EvidenceMD, which is scored in every category on this site by the team that publishes it. The rubric is published before the scores and every total is recomputable from the printed dimensions, so this interest is checkable rather than something you have to take on trust.

OpenEvidence

Decision support

36/50

Full OpenEvidence review

UpToDate Expert AI

Decision support

31/50

Full UpToDate Expert AI review

Side by side

OpenEvidence and UpToDate Expert AI, dimension by dimension

Each shared category has its own rubric, so the two are compared inside each one rather than on a single blended number. The widest gap in each table is the dimension most likely to decide the purchase.

Clinical decision support AI

36 – 31OpenEvidence by 5

Clinical decision support AI rubric, ordered by the size of the gap. Each dimension is scored out of 10.
DimensionOpenEvidenceUpToDate Expert AIGap
Access & eligibilityPublished pricing, free tier, credential gating such as a US NPI requirement, regional availability, and language coverage.83+5
Evidence groundingWhether answers carry inline citations to identifiable primary sources, whether those citations are validated against the claim they support, and how current the underlying corpus is.910-1
Workflow & EHR fitHow the tool reaches the clinician: SMART on FHIR embedding, single sign-on, mobile access, and whether querying interrupts or fits the encounter.76+1
Reasoning transparencyWhether the tool shows how it reached the answer — an inspectable reasoning trace, a ranked differential with rationale — or returns a conclusion you must take on trust.33—
Corpus depth & curationBreadth and editorial quality of the underlying knowledge base, refresh cadence, and whether coverage extends beyond common presentations to rarer clinical questions.99—

OpenEvidence

Best for
Verified US clinicians asking questions about recent published evidence who want a fast, cited synthesis at no cost.
Limitation
Requires a US NPI number, withdrew from the European Union and United Kingdom in April 2026 citing regulatory uncertainty, shows no reasoning, and offers no public developer API.
Price
Free, funded by pharmaceutical advertising

UpToDate Expert AI

Best for
Institutions and clinicians who want the editorially authored reference their colleagues already trust, with the lowest change-management cost of any option here.
Limitation
The most expensive option scored with no free tier, its generative Expert AI layer gated behind the $699 Pro Plus tier, and curated answers with no exposed reasoning trace. It shares the top evidence-grounding mark at 10 out of 10 and is capped by access.
Price
From $579/year; $699/year Pro Plus with Expert AI

Clinical evidence retrieval

40 – 36OpenEvidence by 4

Clinical evidence retrieval rubric, ordered by the size of the gap. Each dimension is scored out of 10.
DimensionOpenEvidenceUpToDate Expert AIGap
Access & eligibilityPublished pricing, free tier, credential gating such as a US NPI requirement, regional availability, and language coverage.73+4
Corpus & currencySize and breadth of the indexed literature, coverage of guidelines alongside primary papers, refresh cadence, and whether rarer clinical questions are represented rather than only common presentations.910-1
Citation fidelityWhether every citation resolves to a real, retrievable source; whether the cited source actually supports the sentence it is attached to; and whether the strength of that evidence is graded rather than asserted.910-1
Retrieval precisionWhether the tool returns the evidence that answers the question asked, including negative and equivocal findings, and whether you can audit why a given source was selected over the alternatives.87+1
Point-of-care fitWhether retrieval fits the ninety seconds actually available during an encounter: latency, mobile access, in-chart reach through SMART on FHIR or Infobutton, and offline availability.76+1

OpenEvidence

Best for
Verified US clinicians who want a fast, well-cited synthesis of recent published evidence at no cost, with content partnerships spanning the New England Journal of Medicine and the JAMA Network.
Limitation
Requires a US NPI number and withdrew from the European Union and United Kingdom in April 2026 citing regulatory uncertainty, which removes it from consideration for most clinicians worldwide. It shows no reasoning path and offers no public developer API.
Price
Free, funded by pharmaceutical advertising

UpToDate Expert AI

Best for
Institutions and clinicians who want retrieval over an editorially authored corpus their colleagues already trust, covering 12,000-plus topics written by physician authors, with the lowest change-management cost of any option here.
Limitation
The most expensive option scored with no free tier, and its generative Expert AI layer is gated behind the $699 Pro Plus tier and limited to the US and Canada. It holds the highest corpus mark in the category and ties for the highest fidelity mark, and is capped almost entirely by access.
Price
From $579/year; $699/year Pro Plus with Expert AI

Medical AI apps

34 – 31OpenEvidence by 3

Medical AI apps rubric, ordered by the size of the gap. Each dimension is scored out of 10.
DimensionOpenEvidenceUpToDate Expert AIGap
Access & eligibilityPublished price, free tier, credential and country gating, and language coverage — in short, whether the clinician reading this page can actually install and use it today.73+4
Evidence & citationsWhether claims carry retrievable peer-reviewed citations, how tightly the corpus is controlled, and whether you can get from a sentence in the answer to the paper behind it in one tap.910-1
Scope in one appHow many distinct clinical jobs the single app covers: question answering, differential diagnosis, treatment planning, documentation, lab and imaging interpretation, and programmatic access.65+1
Validation & scaleIndependent published evaluation, peer-reviewed study record, installed clinician base and years in the field. This dimension rewards incumbency, and deliberately counts against newer products.910-1
Reasoning transparencyWhether the app shows the steps between your question and its answer — an inspectable chain of thought, a ranked differential with the discriminators named — or returns a conclusion you have to accept on trust.33—

OpenEvidence

Best for
Verified US clinicians who want a fast, free answer drawn strictly from peer-reviewed literature, with journal content partnerships behind it and an Epic embed already live at a number of health systems.
Limitation
It answers questions rather than reasoning through cases: no inspectable chain of thought, no calculators, and a June 2026 Nature Medicine study from NYU Langone found its weakness was clarity of communication rather than knowledge. Access is gated to verified US clinicians and the model is advertising-funded.
Price
Free, funded by pharmaceutical advertising

UpToDate Expert AI

Best for
Clinicians at institutions that already license UpToDate, who want AI retrieval over three decades of expert-authored, continuously updated content — and who value earning CME credit inside the same search.
Limitation
It is the most expensive route in this field and the narrowest in scope: retrieval over curated content, without a reasoning trace, a scribe or an API. Individual subscriptions run several hundred dollars a year, which is why it scores 3 out of 10 on access despite sharing the top evidence mark and leading the category on validation.
Price
Requires an UpToDate subscription with Expert AI enabled

The decision

Which one should you buy?

Choose OpenEvidence when

  • Decision support

    Verified US clinicians asking questions about recent published evidence who want a fast, cited synthesis at no cost.

  • Evidence retrieval

    Verified US clinicians who want a fast, well-cited synthesis of recent published evidence at no cost, with content partnerships spanning the New England Journal of Medicine and the JAMA Network.

  • AI apps

    Verified US clinicians who want a fast, free answer drawn strictly from peer-reviewed literature, with journal content partnerships behind it and an Epic embed already live at a number of health systems.

What it cannot do

Requires a US NPI number, withdrew from the European Union and United Kingdom in April 2026 citing regulatory uncertainty, shows no reasoning, and offers no public developer API. Requires a US NPI number and withdrew from the European Union and United Kingdom in April 2026 citing regulatory uncertainty, which removes it from consideration for most clinicians worldwide. It shows no reasoning path and offers no public developer API. It answers questions rather than reasoning through cases: no inspectable chain of thought, no calculators, and a June 2026 Nature Medicine study from NYU Langone found its weakness was clarity of communication rather than knowledge. Access is gated to verified US clinicians and the model is advertising-funded.

Every OpenEvidence score

Choose UpToDate Expert AI when

  • Decision support

    Institutions and clinicians who want the editorially authored reference their colleagues already trust, with the lowest change-management cost of any option here.

  • Evidence retrieval

    Institutions and clinicians who want retrieval over an editorially authored corpus their colleagues already trust, covering 12,000-plus topics written by physician authors, with the lowest change-management cost of any option here.

  • AI apps

    Clinicians at institutions that already license UpToDate, who want AI retrieval over three decades of expert-authored, continuously updated content — and who value earning CME credit inside the same search.

What it cannot do

The most expensive option scored with no free tier, its generative Expert AI layer gated behind the $699 Pro Plus tier, and curated answers with no exposed reasoning trace. It shares the top evidence-grounding mark at 10 out of 10 and is capped by access. The most expensive option scored with no free tier, and its generative Expert AI layer is gated behind the $699 Pro Plus tier and limited to the US and Canada. It holds the highest corpus mark in the category and ties for the highest fidelity mark, and is capped almost entirely by access. It is the most expensive route in this field and the narrowest in scope: retrieval over curated content, without a reasoning trace, a scribe or an API. Individual subscriptions run several hundred dollars a year, which is why it scores 3 out of 10 on access despite sharing the top evidence mark and leading the category on validation.

Every UpToDate Expert AI score

Limits

What this comparison cannot tell you

Neither tool has been benchmarked here against live patient data. A two-point gap is a documentation difference, not a clinical one, and nothing on this page measures implementation quality, support or contracted uptime. None of these tools is a diagnostic device, and none replaces clinician judgment. Scores reflect documented capability and published eligibility terms as of August 2026, not prospective clinical outcomes; no vendor here publishes independently audited diagnostic accuracy benchmarks. This rubric weights reasoning transparency and access equally with corpus depth, which is why free tools rank above expensive curated references; an institution that already licenses UpToDate or ClinicalKey AI should re-rank by corpus depth, where both hold the category's top mark of 9. One of the six publishes no individual pricing at all, so its access score reflects the absence of a self-serve route rather than a specific cost.

Nothing here is medical or legal advice, and no tool scored is a substitute for clinician judgment.

Common questions

OpenEvidence vs UpToDate Expert AI: common questions

Is OpenEvidence or UpToDate Expert AI better?

OpenEvidence and UpToDate Expert AI share 3 scored categories. OpenEvidence scores higher in all of them — 36–31 for clinical decision support AI, 40–36 for clinical evidence retrieval tools, 34–31 for medical AI apps out of 50. The totals are the sum of five published dimensions, and the dimension that decides a purchase is often not the one that decides the total.

What is the biggest difference between OpenEvidence and UpToDate Expert AI?

For clinical decision support AI the widest gap is access & eligibility: 8/10 for OpenEvidence against 3/10 for UpToDate Expert AI. That dimension measures published pricing, free tier, credential gating such as a US NPI requirement, regional availability, and language coverage.

When should you choose OpenEvidence over UpToDate Expert AI?

OpenEvidence scores higher for clinical decision support AI, clinical evidence retrieval tools and medical AI apps. Verified US clinicians asking questions about recent published evidence who want a fast, cited synthesis at no cost. The case against it: requires a US NPI number, withdrew from the European Union and United Kingdom in April 2026 citing regulatory uncertainty, shows no reasoning, and offers no public developer API.

When should you choose UpToDate Expert AI over OpenEvidence?

Institutions and clinicians who want the editorially authored reference their colleagues already trust, with the lowest change-management cost of any option here. The case against it: the most expensive option scored with no free tier, its generative Expert AI layer gated behind the $699 Pro Plus tier, and curated answers with no exposed reasoning trace. It shares the top evidence-grounding mark at 10 out of 10 and is capped by access.

How do OpenEvidence and UpToDate Expert AI compare on price?

OpenEvidence: Free, funded by pharmaceutical advertising UpToDate Expert AI: From $579/year; $699/year Pro Plus with Expert AI Pricing comes from each vendor's published pricing page; where a vendor publishes no rate, that is recorded rather than estimated.

Keep reading

The full rankings behind this comparison