LitSource

LitSource is the world's first literature verification engine built specifically for medicine and life sciences. It helps researchers, clinicians, and students find verifiable evidence to support their claims, detect AI-hallucinated references, and streamline citation workflows. Unlike generic AI search tools, LitSource directly connects to PubMed, CrossRef, OpenAlex, and Semantic Scholar, covering over 100 million peer-reviewed papers. Users can paste a sentence or paragraph from their draft, and the system performs semantic retrieval across full-text articles to extract and highlight exact supporting sentences. The platform also includes a Citation Checker that batch-validates DOIs and metadata to expose fake or mismatched references. Key features include sentence-level evidence extraction with support/against classification, biomedical entity recognition (drugs, diseases, genes), impact factor filtering, one-click PDF access via Open Access parsing, and citation export in APA/MLA/BibTeX/EndNote. It supports both English and Chinese claims, and its Chrome extension (PubMed Search Assistant Lite) helps generate optimized PubMed queries. Recent updates improve reverse search accuracy for complex biomedical inputs and expand coverage to non-biomedical use cases with faster response times. LitSource is built for intensive research workflows: preparing grant proposals, writing manuscripts, conducting systematic reviews, or pre-submission reference checks. Its evidence-first approach and transparency (with support/partial/against classification) make it a practical tool for defensible academic writing. LitSource positions itself as a specialized alternative to general-purpose AI citation checkers, offering deeper biomedical database integration and sentence-level evidence extraction.