LitSourceLitSource
Free Plan: 10 credits refilled monthly

Find Sources in Seconds. Verify Every Citation

AI platform for literature source tracing and citation verification.Trace real sources, verify whether citations hold up, and make research conclusions more trustworthy.

TRACEABLE SOURCESSource links, one-click verification
Paste a paragraph from your thesis, a rough hypothesis, or a bold claim here...
Try an example:

Integrated with leading academic databases

PubMedPubMed Central

Sentence-level retrieval powered in part by NCBI LitSense/LitSense2.

How LitSource works — in seconds

From a single question to citable evidence in just three steps. No complex search syntax needed.

AI-Powered Core Capabilities

Not just another search box. An AI engine that truly understands your claims. 30M+ papers, results in seconds.

Sentence-level Semantic Retrieval

Forget keyword guessing. Our AI engine truly understands your claim's semantics, pinpointing sentences and paragraphs with similar viewpoints across 30M+ papers—returning citable evidence in seconds, 100x faster than traditional search.

Evidence Tracing · One-click to Source

Every result links directly to the original paper. AI auto-highlights key sentences supporting your claim with full context. One-click export to APA, MLA, EndNote formats—seamless from discovery to citation.

Smart Biomedical Entity Recognition

Deep learning NER models automatically identify and highlight genes, diseases, drugs, cell lines, and more. Real-time access to PubMed, CrossRef, Semantic Scholar—comprehensive biomedical coverage.

Multi-dimensional Precision Filtering

Search by Introduction, Methods, Results, Discussion sections. Combined with publication date and AI-powered ranking—weighing evidence strength, journal impact, and citation trends to surface the most relevant papers first.

Core Workflows: Pain Point to Verifiable Evidence

Instead of unverifiable testimonials, we show practical workflows, outcomes, and clear Pro upgrade triggers.

Manuscript Writing & Backfilling Citations

Best For: Graduate students / paper authors

Pain Point: When claims are already drafted, manual keyword loops across multiple databases are slow and often return papers that do not truly support the sentence.
LitSource Workflow: Paste a claim and get evidence sentences plus source links directly, shifting from topic search to evidence-first validation.
Pro Trigger: Frequent export (BibTeX/RIS/CSV) and high-volume workflows are better handled with Pro.

Citation Authenticity Verification

Best For: Reviewers / PIs

Pain Point: Checking whether references are real and whether they truly support the original claim is time-consuming when done manually.
LitSource Workflow: Run authenticity-focused checks and quickly inspect support strength signals to reduce line-by-line verification effort.
Pro Trigger: Batch verification and verification report export should be positioned as Pro capabilities.

Coursework and Thesis Preparation

Best For: Medical students / early-career researchers

Pain Point: A frequent risk is citations that are formatted correctly but do not provide real support for the claim.
LitSource Workflow: Validate evidence sentences and context first, then export in standard formats with confidence.
Pro Trigger: Pro is a better fit for repeated searches, sustained exports, and intensive writing periods.

Frequently Asked Questions

Real citations, real fast. Here's what you need to know.

Can't find what you're looking for? Contact our support team

Make Every Citation Defensible Before You Submit

Compare Free vs Pro on credits, export options, and verification power, then choose the plan that matches your workload.

LitSource - Find Citations in Seconds