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R Discovery vs scite

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors. R Discovery starts at $12, scite at $20. Both have a free tier. Only scite ships a public API.

R DiscoveryRecommends and summarizes research papers, chats with PDFs, and reads papers aloud, built by Cactus Communications.sciteCitation index that shows whether papers support or contradict

Side by side

FactR Discoveryscite
CategoryAcademic Search & Literature ReviewResearch & Citation Tools
Pricing modelFreemiumFreemium
Starts at$12 month$20 month
Public APINoYes
PlatformsWeb, iOS, Android, Chrome ExtWeb, Chrome Ext, API
CompanyCactus CommunicationsResearch Solutions, Inc.
Launched—2018
Last verifiedSep 1, 2026Sep 6, 2026

What our research says

R Discovery

R Discovery is built around the daily habit of keeping up with a field: it recommends papers based on what you've already read, then lets you interrogate a PDF instead of skimming it cold. The free tier is usable on its own, but the features researchers actually want, literature review drafts and unlimited PDF chat, sit behind the $12/month Prime plan.

Pros

  • Personalized paper feed based on reading history across a large index
  • Chat directly with a paper's PDF instead of just searching its abstract
  • Generates a first-draft literature review from selected papers
  • Audio playback for papers, useful for reading on the move

Cons

  • Heavier AI features (literature review, unlimited PDF chat) require the paid Prime tier
  • Recommendation quality depends on how much reading history the account has built up
  • No API for pulling data into other research tools

scite

The citation-classification dataset is the moat — no other research assistant tells you a paper has been contradicted 14 times. Use it to vet sources, not to discover them; Elicit and Consensus are better at the initial sweep.

Pros

  • Supporting/contrasting/mentioning classification is genuinely unique among research tools
  • Zotero plugin and free browser extension carry the data into existing workflows without an account
  • Full API access to papers, tallies, citations and Reference Check endpoints
  • Backed by a public company since the 2023 acquisition, so it is unlikely to disappear

Cons

  • Classification quality depends on full-text access; low-coverage publishers yield sparse tallies
  • $20/mo monthly is a hard sell against free-tier competitors unless you cite heavily
  • The Assistant is competent but not clearly better than dedicated research chat tools
  • Free tier is capped at roughly 100 reports a month

Which one fits

Choose R Discovery if you need

  • Researchers who want a personalized feed of new papers in their field
  • Skimming a paper's findings via chat before deciding to read the full text
  • Non-native English speakers who need abstracts translated

Choose scite if you need

  • Checking whether a paper you plan to cite has been disputed in later literature
  • Systematic reviews where you must justify why a source was included or dropped
  • Auditing your own manuscript's reference list before journal submission
  • Librarians and institutions wanting citation-context badges inside existing discovery tools

More comparisons

All R Discovery alternatives →All scite alternatives →Browse all Academic Search & Literature Review →