Overview
Both tools help you find papers, and both draw on overlapping open metadata sources, so the same study will usually be reachable in either. Both export into reference managers. Past that, they do different jobs.
Litmaps documents 270M+ articles drawn from Semantic Scholar, OpenAlex and Crossref, and SciSpace searches across Google Scholar, PubMed, ArXiv and other databases.
Seeing a field as a network of clusters, bridges and outliers is a genuinely different way of understanding it, as Litmaps provides. It also watches your map and tells you when new papers land in that research area.
But Litmaps does not not tell you what the papers in the network found. SciSpace answers a research question with cited results and line-by-line inline citations, lets you chat with a PDF to interrogate a methods section, extracts study details across papers into a comparison table, runs structured systematic reviews, and then drafts with reference management. That is the gap between having the right reading list and having a synthesis you can write from.
Plenty of researchers run Litmaps for discovery and monitoring alongside a tool like SciSpace that reads and extracts. If you are choosing one, choose on which half of the problem is currently costing you more time.
Our verdict
Litmaps and SciSpace solve adjacent halves of the same problem.
 Choose Litmaps if you want to… |  Choose SciSpace if you want to… |
|---|---|
| See a field as a visual citation network and spot the gaps | Ask a research question and get cited, ranked answers |
| Get alerted when new papers appear near your seed set | Read and interrogate the PDFs you find |
| Expand systematically from papers you already have | Extract findings across papers into a comparison table |
| Keep discovery cheap and sync it to Zotero | Carry the synthesis into a cited draft in the same workspace |
Summary vs synthesis: the difference that matters most
A strong literature review synthesizes rather than summarizes. Summarizing lists what each paper said, one after another. Synthesis groups studies by theme, method, or argument — showing where the field agrees, disagrees, and leaves gaps.
The two tools help at different points on that path. Litmaps gets you to a structural view of the field. But a citation map shows relationships between papers, not claims within them; the map cannot tell you that two clusters disagree about a mechanism. SciSpace works on the claims: cited answers, PDF chat to interrogate a specific study, and extraction into comparison tables so patterns across methods and findings become visible, then a cited draft in the same workspace.
Value for money
Litmaps is cheaper but with a narrower scope. SciSpace prices a workspace that also reads, extracts, runs systematic reviews and writes. A researcher facing a full review from search to draft would otherwise be paying for two or three tools. Pick on the job you need.
| Plans (monthly) | | |
|---|---|---|
| Free | 2 Litmaps, 100 articles per map, basic search up to 20 inputs, monthly alerts | Basic — 100 monthly credits, Lite model access |
| Entry paid | Pro — $10/mo, unlimited maps and monitoring | Premium — $20/mo, 1,200 monthly credits, Pro model access |
| Higher tier | — | Advanced — $90/mo, 10,000 monthly credits, Pro & Expert model access |
| Top tier | — | Max — $200/mo, 40,000 monthly credits |
