LitSense vs LitSource
LitSense is an official NCBI tool for sentence-level search over PubMed and PMC. LitSource covers the same "sentence to sources" workflow, then adds citation authenticity verification, broader database coverage and export tools. This page links to the official LitSense site and helps you pick the right tool.
LitSense vs LitSource, side by side
Both tools find papers that support a sentence. The differences are in coverage, verification and workflow.
| Dimension | LitSense | LitSource |
|---|---|---|
| Maintainer | NCBI (NIH), free official tool | LitSource team, product for research writing (free tier available) |
| Core capability | Sentence-level semantic search over PubMed / PMC | Sentence-to-source search + per-reference authenticity verification |
| Coverage | PubMed abstracts + PMC open-access full text | PubMed, PMC, CrossRef, OpenAlex, Semantic Scholar, Europe PMC, arXiv |
| Citation verification | Not supported | Verifies DOI, PMID, title, authors, journal and year; flags AI-fabricated references |
| Language support | English-only interface and queries | Multilingual UI; non-English sentences are rewritten into English queries |
| Results | List of similar sentences | Highlighted supporting snippets + journal metrics + PubMed/DOI links |
| Export & workflow | Not supported | Citation export, saved lists, browser extension |
LitSense official site (NCBI)
LitSense is maintained by the U.S. National Center for Biotechnology Information (NCBI), English-only. If you only need English sentence-level search, you can visit the official site:
LitSense official site (for reference)If you also need citation verification, a multilingual interface or export tools, try LitSource for free.
Try LitSource freeWhen to use which?
Use LitSense when
- You only need English sentence-level search inside PubMed/PMC
- You prefer the official NCBI ecosystem and need no verification or export
- You want a fully free, no-account lightweight lookup
Use LitSource when
- You need broader coverage or non-English sentence input
- You must verify references (especially AI-generated ones) before submission
- You want journal metrics, citation export and saved search history
FAQ
From one sentence to real, verifiable sources
Paste a sentence or a reference list. LitSource finds real sources across PubMed, CrossRef and more, with highlighted supporting snippets.