Brandwave

Isabel vs OpenEvidence:Which is more popular?

In September 2026, OpenEvidence had more branded searches than Isabel among clinical decision support platforms worldwide. OpenEvidence had about 1.8 million branded searches, while Isabel had 165,000. OpenEvidence made up 51.5% of all clinical decision support platform searches we track, and Isabel accounted for 4.6%. When we asked ChatGPT and Google AI Overviews about clinical decision support platforms, OpenEvidence appeared in two of the five answers and Isabel in none.

Among clinical decision support platforms worldwide in September 2026

Who do people search for more?

OpenEvidence, about 11 searches for every 1 for Isabel

OpenEvidence 1.8M searchesIsabel 165K searches

Who does AI mention more?

OpenEvidence, mentioned in 2 of 5 answers, Isabel in 0

OpenEvidence in 2 of 5Isabel in 0 of 5

Who does AI recommend more?

OpenEvidence, the only one of the two named

OpenEvidence first in 2Isabel never named

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Top clinical decision support platforms in ChatGPT and Google AI Overviews

In three ChatGPT questions and two Google AI Overviews, OpenEvidence was mentioned in two out of five: in two of the three ChatGPT answers, but not in either of the two Google AI Overviews. Isabel did not appear in any of the five answers.

Most recommended by AI

Brands get a higher ranking if they are mentioned earlier in the answers.

  1. UpToDate1st
  2. DynaMed2nd
  3. VisualDx3rd
  4. OpenEvidence4th
  5. BMJ Best Practice5th
  6. Wolters Kluwer6th
  7. Elsevier–
  8. Isabel–

Mentioned by AI

Each dot is one answer, filled in when that answer mentions the brand.

  • UpToDate4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Wolters Kluwer3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • DynaMed3 of 5Named in 3 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • OpenEvidence2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • VisualDx2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Elsevier1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • BMJ Best Practice1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Isabel0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers

See every answer about clinical decision support platforms

5 answers

Not named in any answer:

Brands are shown in the order each answer named them. The survey took place in the United States on October 20, 2026.

Is Isabel or OpenEvidence more popular in search?

This chart shows how often people search Google for Isabel and OpenEvidence by name. Each line represents a brand's share of searches for all eight clinical decision support platforms we track, month by month, from English-language searches worldwide.

Isabel and OpenEvidence among clinical decision support platforms worldwide, by month

Share of searches by month for OpenEvidence, Isabel. The figures are in the table below the chart.

View monthly share of searches table
MonthOpenEvidenceUpToDateElsevierIsabelWolters KluwerDynaMedBMJ Best PracticeVisualDx
Oct 202538.8%38.8%11.7%4.3%4.3%1.1%0.58%0.39%
Nov 202534%41.5%12.5%5.6%4.6%0.92%0.5%0.41%
Dec 202537.8%37.8%11.4%6.2%5.1%0.84%0.56%0.37%
Jan 202639.1%39.1%9.6%5.3%5.3%0.87%0.47%0.32%
Feb 202642%34.4%10.4%4.6%6.9%0.76%0.62%0.34%
Mar 202643.3%35.3%10.6%3.9%4.8%0.78%0.96%0.35%
Apr 202648.8%32.5%9.8%3.6%3.6%0.72%0.59%0.32%
May 202647.6%31.7%9.6%5.2%4.3%0.7%0.57%0.31%
Jun 202649.1%32.7%8%4.4%4.4%0.59%0.4%0.32%
Jul 202653.5%29.3%7.2%4.8%3.9%0.53%0.35%0.35%
Aug 202652.6%28.8%8.7%4.7%3.9%0.64%0.35%0.35%
Sep 202651.5%28.2%10.4%4.6%3.8%0.63%0.51%0.34%

How has the Isabel and OpenEvidence comparison changed over the last 12 months?

3 findings

How did search popularity change for clinical decision support platforms worldwide in September 2026?

2 changes
  1. In September 2026, OpenEvidence lost share of searches among clinical decision support platforms worldwide, from 52.6% to 51.5%.

  2. Estimated monthly branded searches for Isabel worldwide rose 22.2% over 12 measured months, from 135K to 165K in September 2026.

How are branded searches counted?

2 search terms

Brandwave collects information about searches that people make online using Isabel’s and OpenEvidence’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.

Isabel

1 branded search term

  • isabel

OpenEvidence

1 branded search term

  • openevidence

How the Brand Demand Index is measured

Other head-to-heads among clinical decision support platforms

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