Define the evidence job before comparing subscriptions
This comparison covers evidence and trial intelligence tools for landscape research, protocol benchmarking, feasibility and evidence summaries. EDC, CTMS and eTMF systems, including those from Medidata or Veeva, run a study rather than research its landscape and sit outside this comparison.
Define the population, intervention, geography and decision before starting a demonstration. For protocol design, compare eligibility criteria and endpoint timing. For feasibility, examine locations, recruitment status and competing studies, then validate assumptions with sites. A registered location does not establish current capacity or patient availability. Our guide to the trial landscape before protocol design explains that preparation.
Compare sources and buying models
ClinicalEvidence
- Best for
- Registry landscape plus literature with team seats
- Trial registries covered
- ClinicalTrials.gov, EU Clinical Trials Register, WHO ICTRP
- Citations
- Every sentence cites an automatically verified NCT number or PMID
- Team plans and pricing
- Clinician 49 USD monthly or 24 yearly equivalent; Research Team 199 or 99, 3 seats; Organization 499 or 249, 10 seats; Enterprise 1,490 or 745, up to 50 seats
Elicit
- Best for
- Structured literature extraction and systematic reviews
- Trial registries covered
- About 545,000 ClinicalTrials.gov trials
- Citations
- Citations in custom extraction tables
- Team plans and pricing
- Pro 49 USD and Scale 169 USD per user monthly, billed annually; Enterprise custom
Citeline Trialtrove
- Best for
- Large pharma competitive intelligence
- Trial registries covered
- Human curated trial database; confirm individual registries with vendor
- Citations
- Confirm source traceability and Ella citation behavior with vendor
- Team plans and pricing
- Enterprise subscription; pricing not public
OpenEvidence
- Best for
- Point-of-care questions for US healthcare professionals
- Trial registries covered
- Not aimed at trial landscape work; confirm registry coverage with vendor
- Citations
- Confirm citation behavior for trial questions with vendor
- Team plans and pricing
- Free for verified HCPs; confirm organizational access with vendor
Consensus
- Best for
- Literature questions
- Trial registries covered
- Not built around trial registries
- Citations
- Paper search; confirm citation details with vendor
- Team plans and pricing
- See vendor site for pricing and team terms
Scite
- Best for
- Literature citation context
- Trial registries covered
- Not built around trial registries
- Citations
- Citation context for papers
- Team plans and pricing
- See vendor site for pricing and team terms
ChatGPT, Claude, Gemini
- Best for
- Drafting from checked evidence
- Trial registries covered
- Confirm retrieval scope with vendor
- Citations
- Can invent NCT numbers and references
- Team plans and pricing
- Confirm current seat pricing with vendor
For ClinicalEvidence, each price pair is USD per month with monthly billing first and annual billing second. Competitor details reflect the October 21, 2026 information snapshot. Confirm current prices, allowances and contract terms before purchase.
ClinicalEvidence for trial landscapes connected to literature
ClinicalEvidence searches ClinicalTrials.gov, the EU Clinical Trials Register, WHO ICTRP, PubMed and PubMed Central open access full text where licenses allow. The index refreshes daily. Every answer sentence cites an NCT number or PMID with automatic verification. Without a verified source, it provides no answer.
Use clinical trial search to investigate a landscape, then inspect the trial table. It includes phase, population, interventions, endpoints, results posted, sponsor, status, enrollment, dates and locations. Intervention comparisons help organize alternatives, while alerts flag new trials and status changes. Read the actual record before treating a planned endpoint as an observed finding.
CSV, RIS and BibTeX exports are included on every plan. XLSX and DOCX start with Research Team. That combination fits a reviewer moving between a spreadsheet and a reference manager. For CRO feasibility work, verify the recruitment assumptions behind the table; for pharma evidence work, check that the selected studies match the development question.
Elicit has the stronger fit when systematic review screening and structured literature extraction drive the purchase. Trialtrove has the stronger fit when a large pharma team prioritizes commercial, human curated competitive intelligence. ClinicalEvidence fits the combined registry and literature job; confirm any additional procurement requirements with the vendor.
Elicit for systematic reviews and extraction tables
Elicit's Clinical Trials feature searches about 545,000 trials from ClinicalTrials.gov, screens protocol and registration information, and extracts custom data into cited tables for paying users. Its literature offering covers more than 138 million papers and supports systematic review screening.
Choose it when reviewers need structured fields across many papers and a screening workflow. Its verified trial coverage here is ClinicalTrials.gov, so confirm other registries with the vendor. Pro costs 49 USD per user per month billed annually, Scale costs 169 USD on the same basis, and Enterprise pricing is custom. For the workflow differences, see how we compare in our Elicit alternative page.
Citeline Trialtrove for enterprise competitive intelligence
Citeline Trialtrove, part of Norstella, is a commercial, human curated trial intelligence database used by pharma. Trialtrove+ launched in February 2025 with Ella, an AI assistant. The company says its intelligence draws on over 60,000 data sources. Citeline also offers Sitetrove for sites.
Shortlist Trialtrove when the buying decision centers on enterprise competitive intelligence and curation. Ask for a demonstration using your indication, including how Ella links an answer to supporting information. Registry scope, exports, seats and citation verification need vendor confirmation. It uses an enterprise subscription and does not publish pricing.
OpenEvidence for clinical care questions
OpenEvidence is a medical AI answer engine aimed at US healthcare professionals and point-of-care questions. Access is free for verified HCPs, with verification commonly tied to an NPI. Industry reporting describes funding largely through pharma advertising.
That care focus makes it a different purchase consideration from trial landscape intelligence. Confirm eligibility and organizational terms directly rather than assuming a clinical credential covers an industry department. Our OpenEvidence alternative page addresses the evidence workflow comparison.
Consensus for literature questions
Consensus belongs on the shortlist when the task starts with a question about published papers. It is a paper search tool rather than a system built around trial registries. Confirm coverage, citation behavior, team access and exports with the vendor, and check its site for current pricing.
Scite for paper citation context
Scite helps investigate citation context around papers. That perspective can inform a literature question, but does not establish a complete registered trial landscape. Use it alongside registry research when unpublished studies matter. Pricing is on its site; confirm seats, export options and the precise citation workflow with the vendor.
General AI assistants for drafting reviewed material
ChatGPT, Claude and Gemini can draft from evidence you supply, but can invent NCT numbers and references. Keep their role to writing from checked material in this workflow. Ask a reviewer to compare each scientific statement with its source before circulation. See why AI invents citations for the failure patterns to test.
Test the workflow your team will actually buy
Give each shortlisted vendor the same question and inspect the source records together. A feasibility manager may prioritize competing recruitment, while a medical affairs or HEOR reviewer needs defensible evidence summaries. Our medical affairs tools comparison examines that adjacent decision.
- Check registry coverage outside the US. Ask specifically about the EU Clinical Trials Register and WHO ICTRP, including exclusions and refresh timing.
- Separate posted results from planned endpoints. Include a registered study without results and check how the answer describes the gap.
- Test citation verification. Open the NCT number or PMID and inspect whether the source supports the sentence, including its qualifications.
- Price team seats and pooled usage. Include analysts and reviewers, then confirm allowances and what happens when the pool is exhausted.
- Test exports into reference managers and spreadsheets. Check identifiers, endpoint wording and missing fields after transfer.
- Ask about an audit log and SSO for regulated teams. Confirm availability and contractual scope with each vendor rather than inferring them from an enterprise label.
When a team also queries the AACT Postgres copy of ClinicalTrials.gov itself, it can turn plain-English questions into SQL for that database. Check the generated joins and filters before relying on the output. The AACT database guide explains the underlying research route. Database access does not itself verify a clinical interpretation.
Questions clinical research buyers ask
What is the best AI tool for clinical research?
ClinicalEvidence fits teams combining registry landscapes with literature, while Elicit fits systematic review extraction and Trialtrove fits enterprise competitive intelligence. Start with the deliverable your reviewers need. Compare sources, sentence verification, seats and exports using a real question before choosing a subscription for your clinical research team.
How is AI used in clinical trials?
AI evidence tools help teams compare registered studies, benchmark protocol choices, examine feasibility and summarize literature. ClinicalEvidence combines trial tables with cited answers for that research work. Review results status and eligibility details yourself, and validate site assumptions separately before using a landscape to support a development decision.
Can ChatGPT search ClinicalTrials.gov?
ChatGPT may retrieve ClinicalTrials.gov pages depending on its available search features, but confirm current capabilities with the vendor. It can also invent trial identifiers and references. For registry evidence, ClinicalEvidence offers sentence citations with automatic verification; still open the cited record and check whether it supports the answer.
Which AI tools search the EU Clinical Trials Register?
ClinicalEvidence searches the EU Clinical Trials Register alongside ClinicalTrials.gov and WHO ICTRP. Its index refreshes daily, with answers tied to verified sources. Elicit's trial coverage described here is ClinicalTrials.gov. Ask other vendors to demonstrate EU register coverage and disclose exclusions before treating their output as an international landscape.
How much do AI tools for clinical trials cost?
ClinicalEvidence starts at 49 USD monthly, or 24 USD per month billed annually; Research Team includes 3 seats at 199 or 99 respectively. Elicit Pro is 49 USD per user monthly billed annually. Trialtrove has unpublished enterprise pricing. Compare workload allowances and export needs before judging the team cost.
Start with a decision your reviewers can assess
Take a current landscape or feasibility question, specify the inclusion criteria, and compare the retrieved studies with your known evidence set. Review a missing result and an exported table together. Then match the seats and billing period on pricing to the work your team expects this quarter.