Software advice
Best AI Clinical Trial Software in 2026
AI clinical trial software is a platform that runs parts of a study, such as electronic data capture, site and trial management or document filing, and adds AI for protocol-to-study setup, source data extraction, medical coding or natural-language queries. It differs from a generic database because it keeps audit trails and validation records that regulators inspect.
Quick answer
Ledidi ranks first because it prints plan and trial prices, offers a 30-day trial and states ISO 27001 and SOC 2 Type II. Climedo suits German-hosted studies with AI study building. Clinion suits teams that want a documented AI governance page.
A sponsor, academic group or small CRO that shops for clinical trial software meets two promises at once: faster study setup and AI that reads protocols, charts and codes terms. The risk sits in the details. A trial system must be validated, produce audit trails and keep records for years, so an AI step that writes into a case report form needs a human approval gate and a clear data-use rule. Most vendors sell by quote, and many name certifications only as logos. We read vendor pages in November 2026 and validated no system, so this ranking rewards what a buyer can check: printed prices, stated hosting, named certifications and how AI output is reviewed.
The 11 best AI clinical trial software in 2026, ranked
There is no score. Vendors can pay for more visibility on this website, for example a higher place in a ranking or more room on a page. Commercial relationships can also affect which products we feature and how prominently. How we rank.
| # | Tool | Best for | Free plan | Entry price |
|---|---|---|---|---|
| 1 | Ledidi | Academic groups and small sponsors that want printed prices, a 30-day trial and an AI study builder | Trial | €360 per year for Individual |
| 2 | Climedo | European sponsors wanting German hosting, AI study building and human sign-off on imports | Trial | Quoted |
| 3 | Clinion | Sponsors and CROs wanting EDC, CTMS and eTMF in one suite with governed AI | Trial | Quoted |
| 4 | Castor | Academic and biotech teams that want EDC, eConsent and AI source extraction with a clear hosting map | Trial | Quoted |
| 5 | Viedoc | Sponsors and CROs that want modular EDC and ePRO with unlimited users and AI-assisted medical coding | No | Quoted |
| 6 | OpenClinica | Small and mid-size sponsors and academic teams that want printed EDC pricing and a free study build | Trial | $750 per month for Launch |
| 7 | SimpleTrials | Research sites and small sponsors that want a priced CTMS and eTMF with a short trial | Trial | $849 per month for Standard |
| 8 | Cloudbyz | Sponsors already on Salesforce that want CTMS, EDC and eTMF with approval-gated AI agents | No | Quoted |
| 9 | CRIO | Research sites that want eSource, eConsent and a site CTMS, with regional servers and an AI eSource Builder | No | Quoted |
| 10 | Medidata | Large sponsors and CROs running many global studies from one vendor | No | Quoted |
| 11 | Octalsoft | Sponsors and CROs wanting a broad eClinical suite from a smaller vendor | No | Quoted |
- 1
Ledidi takes first place because a buyer can read almost everything: four subscription tiers, a Basic Trial price for 50 participants and 3 sites, a 30-day trial and a trust centre listing ISO 27001 and SOC 2 Type II. Its AI Study Builder drafts a study from a protocol for your team to edit. Hosting region and AI data use are not stated.
Strong on
- Subscription and per-trial prices are printed, from €360 a year to €9,500 for a Basic Trial
- Trust centre lists ISO 27001, SOC 2 Type II, HIPAA verification and UK Cyber Essentials
- AI Study Builder drafts visits, forms and surveys that staff review before go-live
Weak on
- Pages name AWS but give no hosting region, retention period or AI data-use rule
- Plan availability of the AI Study Builder is not stated on the pricing page
Skip it if: Large sponsors that need a global CTMS and eTMF suite, or buyers who must see a hosting region before a demo. Team is €1,500 a year for 5 users. A Basic Trial costs €9,500 for 12 live months.
- 2
Climedo ranks second because its pages explain how AI works with a human gate: imported data needs sign-off before reaching the form, with confidence scores and a four-eye step. It states Frankfurt hosting, an ISO 27001 hosting partner and a registered Munich company. The price structure is described but no figure is printed, and its own certifications are not named.
Strong on
- AI Study Configurator, Autonomous Data Capture and AI Medical Coding are listed products
- Servers are in Frankfurt, with US hosting available on request, according to the home page
- Unlimited users and sites are included in every package
Weak on
- No price figure is printed, only the fee structure and a one-year minimum contract
- AI data use is not addressed on the compliance page
Skip it if: Buyers who need a printed price list, or who want a vendor with its own named ISO 27001 certificate. Billing is a monthly fee per active study plus a one-time set-up fee, annually in advance. No figures are printed.
- 3
Clinion ranks third because its AI information page states that customer study data is not used to train AI models, names Azure OpenAI, and describes tools that mask sensitive data and keep an audit trail. The trust centre names ISO 27001 and ISO 9001 audits. No price or hosting region is shown, and SOC 2 and ISO 42001 are still described as in progress.
Strong on
- AI page states study data is not used to train models and names Azure OpenAI as provider
- Trust centre names ISO 27001:2022 and ISO 9001:2015 certification by an auditor
- One suite covers EDC, CTMS, eTMF, RTSM, ePRO and CSR automation
Weak on
- Hosting region and retention periods are not stated on the trust center
- SOC 2 Type II and ISO 42001 are described as work with auditors, not completed
Skip it if: Teams that need a printed price or a named hosting region before a first call. No price appears on the pages we read. Pricing is by demo request.
- 4
Castor takes fourth place. Its security statement lists Azure regions in the EU, UK, Australia and the US, ISO 27001 certification and optional application-level encryption, and Catalyst proposes values from source documents for a human to confirm. Pricing is quote-only, retention for Catalyst can run up to 25 years, and the AI data-training rule is not stated.
Strong on
- Security statement names Azure regions in the Netherlands, Ireland, UK, Australia and US
- Catalyst extraction needs a human reviewer to confirm each value before it is committed
- Pricing process promises a fixed-scope proposal within 5 business days
Weak on
- Quote-only pricing, with no plan or price printed
- The privacy statement does not say whether data trains AI models
Skip it if: Buyers who want to compare list prices before talking to sales, or a vendor that states AI data use. Pricing is tailored to each study, with a fixed-scope proposal that the page says arrives within 5 business days.
- 5
Viedoc is fifth. Its security page lists ISO 27001:2022 company-wide, a SOC 2 Type 2 report on request and a validation packet with each release, and Viedoc Vantage adds AI-assisted medical coding with team approval. The price is unstated, hosting provider and region are not given, and the privacy policy leaves AI data use open.
Strong on
- ISO 27001:2022 and a SOC 2 Type 2 report on request are stated
- Each release ships a validation summary report in an inspection readiness packet
- Unlimited users come with study-based modular pricing and no seat fees
Weak on
- Hosting location and provider are not named on the security page
- Privacy policy covers website visitors and does not address AI use of study data
Skip it if: Buyers who need a printed price or a stated hosting region before a demo. Pricing is modular and per study, with no per-seat fees. Hosting, support and updates are in the license.
- 6
OpenClinica ranks sixth because its pricing page prints Launch, Core and Advanced tiers with participant and site limits, a 30-day trial and hourly service rates, and it lists ISO 27001 and SOC 2. No AI feature appears on the pages we read, so it belongs here as a priced reference, and its hosting region is not given.
Strong on
- Launch, Core and Advanced prices are printed, with a 30-day trial on Launch
- Hourly rates for consulting, training and engineering are listed
- Pages list 21 CFR Part 11, HIPAA, GDPR, SOC 2 and ISO 27001
Weak on
- No AI features were described on the pages we read
- Privacy policy says hosting providers sit in the US, the EU and other locales
Skip it if: Teams that want AI protocol-to-study building or source extraction today. Launch is EDC only, 150 participants and 3 sites. Core is $3,000 a month per study on a 12-month term.
- 7
SimpleTrials ranks seventh because six CTMS and eTMF plans are priced on the page, add-ons such as EU hosting and validation packages are itemized, and a one-month trial exists. The pages describe no AI features, and the data center is in the United States. It is a clear, non-AI baseline for site and sponsor tracking.
Strong on
- Five monthly plans are priced, with annual billing 20 percent lower
- Add-ons are priced, including EU hosting at $349 a month and validation packages
- Data center holds SOC 1/2/3, ISO 27001 and ISO 9001, with nightly backups
Weak on
- No AI feature is described on the pages we read
- A startup fee applies to every plan and its amount is not listed
Skip it if: Buyers who want AI extraction, coding or study building inside the product. Standard covers up to 10 studies and 5 users. EU hosting adds $349 a month, and a startup fee applies.
- 8
Cloudbyz is eighth. It builds its suite on Salesforce, states ISO 9001:2015 and ISO 27001:2022 certification, and lists AI eTMF and RegCheck agents under a rule that no agent advances status, sends or signs without a person. Pricing is hidden, hosting regions are not named, and AI data handling is not covered. It ranks below vendors that show more.
Strong on
- Footer states ISO 9001:2015 and ISO 27001:2022 certification
- AI agents queue every output for human review and approval
- Built natively on Salesforce, which suits teams already on that platform
Weak on
- No price, hosting region or AI data-handling details appear on the pages we read
- Privacy policy covers website visitors, with customer data under separate terms
Skip it if: Buyers outside the Salesforce ecosystem or those who need a printed price. Pricing requires a contact or demo request. No plan or price is printed.
- 9
CRIO ranks ninth. Its security page lists servers in the US, Canada, Germany and Australia, SOC 2 and ISO 27001 certified data centers and 256-bit encryption, and the home page lists an AI eSource Builder. It prints no price, gives no detail on how the AI works and does not address AI data use. Sites may still value its regional servers.
Strong on
- Security page lets clients host in the US, Canada, Germany or Australia
- Hosting data centers are SOC 2 and ISO 27001 certified
- Products include eSource, eConsent, a site CTMS and eRegulatory
Weak on
- The AI eSource Builder is listed with no description of how it works
- No price is shown, and the security page is silent on AI data use
Skip it if: Sponsors that need a sponsor-side CTMS across many sites, or buyers who want printed pricing. Pricing is not listed on the home page. A demo or contact request starts the quote.
- 10
Medidata is tenth. It documents breadth: CTMS with Rave EDC and eTMF links, Coder+, an AI companion called Dot and a trust page with SOC 2+ Type II, four ISO standards and an AI validation framework. It states no price, no hosting regions beyond HDS in France, and does not say whether data trains models.
Strong on
- Trust page lists SOC 2+ Type II, ISO 27001, 27017, 27018, 27701 and HDS hosting
- Page states no secondary use of data without explicit written permission
- CTMS links to Rave EDC and Medidata eTMF for dashboards and filing
Weak on
- Pricing and contracting run through sales, with no public plan
- Hosting regions and training on customer data are not stated
Skip it if: Small studies or academic teams that want self-serve setup and a printed budget. Pricing is sales-led. The CTMS page directs visitors to contact sales.
- 11
Octalsoft is last because its pages are the thinnest on checkable detail. They list CTMS, EDC, eTMF, RBQM and more, plus an AI/ML capability section, but give no technical detail on AI, no price and no hosting, and compliance appears only as logos. The privacy policy lists an Indian address and does not address AI training.
Strong on
- Suite lists CTMS, EDC, RTSM, ePRO, eConsent and eTMF under one vendor
- Everest Group named it a Major Contender in 2024 and 2025
- Offices are listed in Herndon, Virginia and Ahmedabad, India
Weak on
- AI is described as agentic and ML-powered without technical detail
- Home page showed placeholder text on the eTMF page and a contact form error
Skip it if: Buyers who need stated hosting, audited certifications or named AI functions in writing. No pricing on the home page. A demo request is the stated route.
How these AI clinical trial software were judged
How reliable is the AI in clinical trial software?
Reliability here means accuracy and review, not speed. Castor says its Catalyst tool reads source documents, a reviewer confirms each value, and reports 0.8 percent of values changed by reviewers, a vendor figure. Climedo requires human sign-off before imported data reaches the case report form and shows confidence scores. Ledidi's AI Study Builder drafts visits and forms that your team edits before go-live. Viedoc states every medical code is approved by your team. Ask each vendor for the review log on a sample protocol, then compare error rates on your own documents. An AI output without an approval step is a risk in a regulated record.
How much does clinical trial software cost?
Prices vary by study and are mostly quoted. As of November 2026, Ledidi lists subscriptions from €360 a year and a Basic Trial at €9,500 for 12 live months. OpenClinica lists Launch at $750 a month and Core at $3,000 a month per study. SimpleTrials lists Standard at $849 a month and Premium Plus at $3,599. Climedo describes a monthly fee per active study plus a one-time set-up fee, billed annually in advance. Viedoc prices by module with no per-seat fees. Castor, Clinion, Cloudbyz, CRIO, Octalsoft and Medidata show no price. Ask whether AI modules are in the quote.
Where is trial data hosted and is it used to train AI?
Clinical data is sensitive, so hosting and AI rules decide procurement. Castor states Azure regions in the EU, UK, Australia and the US, and CRIO lists servers in the US, Canada, Germany and Australia. Climedo's page names Frankfurt. Clinion's AI page says customer study data is not used to train AI models and names Azure OpenAI. Medidata says it does not use data secondarily without written permission. SimpleTrials states US storage. For Viedoc, Ledidi, Cloudbyz and Octalsoft the vendor's policy was not checked for AI training beyond what the pages say.
How hard is it to move a trial out of a clinical platform?
Leaving a platform mid-study is costly because the database, audit trail and validation package are tied together. Most buyers move at study boundaries instead. Climedo describes an annual contract paid in advance with cancellation three months before the end. OpenClinica Core is a 12-month contract per study. SimpleTrials says its plans carry no long-term commitment and sells add-ons for EU hosting and validation packages. Before signing, ask for an export in CDISC-friendly formats, the audit trail and the validation documents, and for how long the vendor keeps the archive after the final lock.
Which clinical trial platform fits your study size and sponsor type?
A first-time academic study fits Ledidi, OpenClinica or Climedo, where setup is quick and plans are priced per study. A research site that needs visits, payments and regulatory binders fits CRIO or SimpleTrials. A mid-size sponsor that wants one vendor for EDC, CTMS and eTMF looks at Clinion, Cloudbyz or Octalsoft. Large pharma and CROs with many parallel studies tend to land on Medidata. Viedoc and Castor sit in between, with strong data capture and many languages. European sponsors should check hosting and the contracting entity before the demo.
How to choose an AI clinical trial platform in three steps
- Define the scope: EDC, CTMS, eTMF or all three. Write down which functions you must have on day one and which can wait. EDC captures case report forms, a CTMS tracks sites, visits and milestones, and an eTMF files essential documents. Ledidi, Climedo, OpenClinica and Viedoc centre on capture, SimpleTrials on CTMS and eTMF, and Clinion, Cloudbyz and Octalsoft bundle several. Buying a suite for a function you will not use inflates the quote, while stitching three vendors together adds integration work and validation duties for each connection. Name an owner for each.
- Test the AI on one real protocol with a reviewer in the loop. Ask two shortlisted vendors to build a draft study from a protocol you already know, or to extract values from three source documents, and have a data manager review the output. Count the fields that needed correction and see where the audit trail records the change. Ledidi offers a 30-day trial, and Climedo can offer a short pilot before an annual contract. A tool whose AI cannot show who approved a value does not belong in a regulated record. Keep notes.
- Request validation and AI-use documents before the contract. Ask for the validation summary, the audit-trail description, the subprocessor list, the hosting region and a written statement on AI use of study data. Viedoc describes a release packet with a validation summary report, and Climedo describes a risk-based GAMP 5 approach. Compare claims with your own SOPs and your sponsor's quality team. If a vendor cannot name where AI processing happens and whether study data trains any model, treat that as an open risk in the quote. Keep the replies.
Frequently asked questions
What is the best AI clinical trial software in 2026?
Ledidi ranks first here because it prints subscription and per-trial prices, offers a 30-day trial, and lists ISO 27001 and SOC 2 Type II with an AI Study Builder that your team reviews. Climedo is stronger for German hosting and AI data capture, and Clinion suits teams that want a documented AI governance page.
Can AI build a clinical trial database from a protocol?
Some vendors say so. Ledidi's AI Study Builder drafts visits, forms and surveys from an uploaded protocol, and Climedo's AI Study Configurator builds forms and edit checks with team approval at each step. Both leave review to your staff, and speed claims are vendor figures that you should test on your own protocol.
Is there free clinical trial software with AI?
No permanent free tier appeared on the pages we read. Ledidi offers a 30-day trial on its Team plan, OpenClinica offers 30 days on Launch, and SimpleTrials lists a one-month trial for $49. Climedo can offer a short pilot before an annual contract. None of these trials was verified to include every AI module.
Does clinical trial software use patient data to train AI?
Clinion's AI page states that customer study data is not used to train AI models. Medidata says secondary use needs your explicit written permission and AI development uses data only where agreements allow. Other vendors do not address training on the pages we read, so ask for a written statement before loading patient data.
Which clinical trial platforms host data in Europe?
Climedo's page names Frankfurt on AWS with US hosting on request. Castor runs on Azure in the Netherlands and Ireland among other regions, and CRIO lists Germany as a server region. SimpleTrials offers EU hosting as a $349 monthly add-on. Confirm region, backup location and contracting entity in your order form.
How much does an EDC for a small clinical trial cost?
Printed prices start at €9,500 for Ledidi's Basic Trial covering up to 50 participants and 3 sites for 12 months, and at $750 a month for OpenClinica Launch with 150 participants and 3 sites. Climedo charges a monthly fee per active study plus a set-up fee, and Viedoc quotes modules. Add validation and services to the budget.
What is the difference between EDC and CTMS software?
EDC captures patient data in case report forms, while a CTMS manages sites, monitoring visits, milestones, contracts and payments. Ledidi, Climedo, Viedoc and OpenClinica centre on EDC, SimpleTrials and CRIO on site and trial management, and Clinion, Cloudbyz, Octalsoft and Medidata offer both. Many trials need both.
What should I check before leaving a clinical trial platform?
Export the data, the audit trail, queries, signatures and validation documents, and ask how long the archive is kept after database lock. Check contract terms too: Climedo cancels three months before the annual term ends, and OpenClinica Core runs 12 months per study. Never switch platforms in the middle of a locked analysis period.