Last updated 09-03-2026
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Ontosight.ai
Scientists and clinicians use Ontosight.ai to ask research questions in plain language and get cited answers pulled from a biomedical knowledge graph. The chatbot searches 75M+ scientific records, 1M+ clinical trials, and 12M+ patents in one conversational interface. The platform says it fields 25,000+ research questions daily and is trusted by 825,000+ scientists worldwide.
Where general research assistants stop at paper search, Ontosight pairs that chat experience with a full AI Tools suite for thesis statements, paper titles, essay expansion, and PDF summarization, plus dedicated pharma workflows for target identification, biomarker discovery, and clinical trial prediction. That split makes it closer to a research workstation than a single-purpose literature bot, though the breadth also means more navigation than tools like Elicit or Consensus that focus on one workflow.
Clinicians can review patient-specific evidence and guidelines faster, while academic researchers use it for literature reviews, gap analysis, and manuscript prep. Graduate students lean on the writing generators and Chat with Document to interrogate uploaded PDFs. Pharma teams can explore the drug discovery modules listed under Products, from SAR de novo design to indication expansion prioritization.
Search and chat across 75M+ scientific records, including 1M+ clinical trials and 12M+ patents
Free plan includes 5 Pro searches per day plus unlimited basic searches on 1 model
Pro plan at $11 per month adds unlimited Pro searches, 3x more citations, and unlimited search history
AI Tools suite covers thesis statements, paper titles, essay expansion, and PDF summarization in one workspace
Pharma workflows include target identification, biomarker discovery, and clinical trial prediction modules
Chat with Document turns uploaded research PDFs into Q&A sessions with cited answers
Biomedical knowledge graph spans papers, trials, and patents in one chat interface.
Medical professionals can apply for free Pro access without a credit card.
Bundles academic writing helpers and pharma R&D modules on the same platform.
Free tier caps Pro searches at 5 per day and limits citation depth in answers.
Pro plan is required for unlimited Pro searches, faster results, and deeper citations.
Broad product line across chat, AI Tools, and pharma modules takes more navigation than focused research bots.
Is Ontosight.ai free to use?
Yes. Ontosight.ai offers a Free plan at $0 per month with 5 Pro searches every day, unlimited basic searches, access to 1 model, and limited citations in AI answers. Paid Pro upgrades and a promotional lifetime deal are also listed on the site.
How much does Ontosight Pro cost?
Ontosight Pro costs $11 per month on the public pricing page. The Pro plan includes unlimited Pro searches, faster results, 3x more citations in AI answers, unlimited search history, early access to new features, priority support, and unlimited reasoning for complex tasks.
What sources does Ontosight.ai search?
Ontosight.ai searches a biomedical knowledge graph spanning 75M+ scientific records, 1M+ clinical trials, and 12M+ patents. Its workflow pages also describe scanning 500M+ sources across literature, trials, patents, and top papers when answering research questions.
Can Ontosight.ai summarize PDF research papers?
Yes. Ontosight.ai's Chat with Document feature lets you upload research PDFs and ask questions, extract summaries, and pull insights without reading every page. The AI Tools suite also includes dedicated research paper, article, essay, and paragraph summarizers.
Does Ontosight.ai include drug discovery tools?
Yes. Ontosight.ai lists pharma-focused modules such as target identification, biomarker identification, SAR de novo molecule design, drug reformulation, clinical trial prediction, and indication expansion prioritization alongside its conversational research chatbot.
Do medical professionals get free Ontosight Pro access?
Yes. Ontosight.ai states that medical professionals receive Ontosight Pro completely free with no credit card required. Clinicians can apply through the pricing page promotion aimed at physicians and medical staff.
What academic writing tools does Ontosight include?
Ontosight.ai's AI Tools suite includes a thesis statement generator, paper title generator, research topic generator, essay expander, conclusion writer, and multiple summarizers. These tools sit in the same platform as its scholarly search and PDF chat features.