{
 "name": "Calibvo Literature Review Tool Index",
 "title": "Literature Review Tool Index",
 "url": "https://calibvo.com/datasets/literature-review-tool-index/",
 "csv": "https://calibvo.com/datasets/literature-review-tool-index.csv",
 "markdown": "https://calibvo.com/datasets/literature-review-tool-index/index.md",
 "computed_at": "2026-10-21",
 "license": "https://calibvo.com/terms",
 "headline": "The median published figure in the Literature Review Tool Index is 17 USD across 12 figures from 11 sources' own pages in USD (range 4.99 to 49 USD; 15 sources publish a figure), read 12 October 2026.",
 "quotes": [
  "The median published figure in the Literature Review Tool Index is 17 USD across 12 figures from 11 sources' own pages in USD (range 4.99 to 49 USD; 15 sources publish a figure), read 12 October 2026.",
  "15 of the 37 named sources read in full publish a figure; 22 publish none, read 12 October 2026.",
  "Literature Review Tool Index, tier student: median 12 USD across 1 source, read 12 October 2026.",
  "Literature Review Tool Index, tier individual: median 29 USD across 1 source, read 12 October 2026.",
  "The median is down 2 USD since 26 September 2026 (was 19 USD across 5)."
 ],
 "citation": "\"Calibvo Literature Review Tool Index\", updated 2026-10-21, https://calibvo.com/datasets/literature-review-tool-index/.",
 "changed_since": {
  "since": "2026-09-26",
  "previous_median": 19,
  "delta": -2,
  "direction": "down",
  "sentence": "The median is down 2 USD since 26 September 2026 (was 19 USD across 5)."
 },
 "national": {
  "unit": "USD",
  "n": 12,
  "median": 17,
  "min": 4.99,
  "max": 49,
  "p25": 10.5,
  "p75": 20,
  "mean": 18.2742,
  "units": {
   "EUR": 3,
   "GBP": 1,
   "USD": 12
  },
  "published_sources": 15,
  "named_sources": 37,
  "read_sources": 37,
  "not_published": 22,
  "published_share": 0.405
 },
 "by_axis": {
  "tier": {
   "student": {
    "USD": {
     "n": 1,
     "median": 12,
     "min": 12,
     "max": 12,
     "p25": 12,
     "p75": 12,
     "mean": 12
    }
   },
   "individual": {
    "USD": {
     "n": 1,
     "median": 29,
     "min": 29,
     "max": 29,
     "p25": 29,
     "p75": 29,
     "mean": 29
    }
   }
  }
 },
 "rows": [
  {
   "source": "EPPI-Reviewer fees",
   "url": "https://eppi.ioe.ac.uk/cms/er4/About/Aboutourfees/tabid/2937/Default.aspx",
   "figure": "£10 ",
   "value": 10,
   "unit": "GBP",
   "vat": null,
   "axis": {},
   "retrieved_at": "2026-10-12",
   "quote": "There is a user fee of £10 per month.",
   "source_class": "primary-provider-own-site",
   "text_sha256": "c6dd5022090972363547dd4ad02623aa6fae5c0e1ac22ceb5642df131e463017"
  },
  {
   "source": "Consensus subscription plans",
   "url": "https://help.consensus.app/en/articles/10087865-subscription-plans",
   "figure": "$20",
   "value": 20,
   "unit": "USD",
   "vat": null,
   "axis": {},
   "retrieved_at": "2026-10-12",
   "quote": "Cost: $20/month or $144/year (billed annually, equivalent to $12/month)",
   "source_class": "primary-provider-own-site",
   "text_sha256": "5d211f651afdca8b78989c18d554cce8236ad5cd77cd0fcb9ed92bb74656d723"
  },
  {
   "source": "Undermind",
   "url": "https://www.undermind.ai/",
   "figure": "$15",
   "value": 15,
   "unit": "USD",
   "vat": null,
   "axis": {},
   "retrieved_at": "2026-10-12",
   "quote": "per person per month, billed annually 5 seats at $15",
   "source_class": "primary-provider-own-site",
   "text_sha256": "6a5d80502412dcb39e008c7bedfa6793c4ca788ded3d6628f53d080e07b64384"
  },
  {
   "source": "Trinka vs Grammarly pricing comparison",
   "url": "https://www.trinka.ai/trinka-vs-grammarly",
   "figure": "$20",
   "value": 20,
   "unit": "USD",
   "vat": null,
   "axis": {},
   "retrieved_at": "2026-10-12",
   "quote": "Monthly billing ~$20/month $30/month",
   "source_class": "primary-provider-own-site",
   "text_sha256": "4ebcd863e92661fdc9ba60dfb3868fc01ee6ba0088beedbf7fc027c9f39878c5"
  },
  {
   "source": "ResearchRabbit pricing",
   "url": "https://www.researchrabbit.ai/pricing",
   "figure": "$10",
   "value": 10,
   "unit": "USD",
   "vat": null,
   "axis": {},
   "retrieved_at": "2026-10-12",
   "quote": "$10* per month",
   "source_class": "primary-provider-own-site",
   "text_sha256": "c686da23f1b6fea323a27215341cdbf3bff5ea35f953bcb2e69cc42da8907013"
  },
  {
   "source": "Sourcely pricing",
   "url": "https://www.sourcely.net/pricing",
   "figure": "$19 ",
   "value": 19,
   "unit": "USD",
   "vat": null,
   "axis": {},
   "retrieved_at": "2026-10-12",
   "quote": "$19 / month",
   "source_class": "primary-provider-own-site",
   "text_sha256": "2db25a8609ce81c86afa84c4c8705f9aad17329701a13328fcc2cf81db94be05"
  },
  {
   "source": "Rayyan pricing",
   "url": "https://www.rayyan.ai/pricing",
   "figure": "$4.99",
   "value": 4.99,
   "unit": "USD",
   "vat": null,
   "axis": {},
   "retrieved_at": "2026-10-12",
   "quote": "$4.99",
   "source_class": "primary-provider-own-site",
   "text_sha256": "01eb797a9bd14c3b8fdc327a5e8167abd53fa264da10e79525a2792efb804290"
  },
  {
   "source": "Elicit pricing",
   "url": "https://elicit.com/pricing",
   "figure": "$49",
   "value": 49,
   "unit": "USD",
   "vat": null,
   "axis": {},
   "retrieved_at": "2026-10-12",
   "quote": "$49",
   "source_class": "primary-provider-own-site",
   "text_sha256": "0150a83ab38bd982bf2f741cfb1896ea282825def189be100216c2d537e8110a"
  },
  {
   "source": "Jenni AI pricing",
   "url": "https://jenni.ai/pricing",
   "figure": "$12",
   "value": 12,
   "unit": "USD",
   "vat": null,
   "axis": {},
   "retrieved_at": "2026-10-12",
   "quote": "$12",
   "source_class": "primary-provider-own-site",
   "text_sha256": "79173b30c5c315d73b4bdea3811e24884f042b588b82f01590f81bccf32c0137"
  },
  {
   "source": "Paperguide pricing",
   "url": "https://paperguide.ai/pricing/",
   "figure": "$12",
   "value": 12,
   "unit": "USD",
   "vat": null,
   "axis": {
    "tier": "student"
   },
   "retrieved_at": "2026-10-12",
   "quote": "$12",
   "source_class": "primary-provider-own-site",
   "text_sha256": "ba61e498ea40509b8effc08a588791498d6562c4890172e28b8e10ff385bfdc2"
  },
  {
   "source": "Paperguide pricing",
   "url": "https://paperguide.ai/pricing/",
   "figure": "$29",
   "value": 29,
   "unit": "USD",
   "vat": null,
   "axis": {
    "tier": "individual"
   },
   "retrieved_at": "2026-10-12",
   "quote": "$29",
   "source_class": "primary-provider-own-site",
   "text_sha256": "ba61e498ea40509b8effc08a588791498d6562c4890172e28b8e10ff385bfdc2"
  },
  {
   "source": "Silvi.ai",
   "url": "https://silvi.ai/",
   "figure": "€19",
   "value": 19,
   "unit": "EUR",
   "vat": null,
   "axis": {},
   "retrieved_at": "2026-10-12",
   "quote": "€19",
   "source_class": "primary-provider-own-site",
   "text_sha256": "ff3dc6fa27c0ecb9229f7808482c18d73b383af7b202a64e4842469be6faca64"
  },
  {
   "source": "Paperpile pricing",
   "url": "https://paperpile.com/pricing",
   "figure": "$8.30",
   "value": 8.3,
   "unit": "USD",
   "vat": null,
   "axis": {},
   "retrieved_at": "2026-10-12",
   "quote": "$8.30",
   "source_class": "primary-provider-own-site",
   "text_sha256": "08fccc4f5ad727cf1889ccaaabe716b0bedb96da146e7160eec40f4cb2c63022"
  },
  {
   "source": "Connected Papers pricing",
   "url": "https://www.connectedpapers.com/pricing",
   "figure": "EUR4.23",
   "value": 4.23,
   "unit": "EUR",
   "vat": null,
   "axis": {},
   "retrieved_at": "2026-10-12",
   "quote": "EUR4.23/month*",
   "source_class": "primary-provider-own-site",
   "text_sha256": "2c6ffbd3388a8f6d08b4068e5bd2dbf9771f0ee85da636a22a07ac975913c946"
  },
  {
   "source": "scite pricing",
   "url": "https://scite.ai/pricing",
   "figure": "$20",
   "value": 20,
   "unit": "USD",
   "vat": null,
   "axis": {},
   "retrieved_at": "2026-10-12",
   "quote": "$20",
   "source_class": "primary-provider-own-site",
   "text_sha256": "be5b9a5add9fc88709df3313b7d6d7dd1054a79c568d0c80f73abf8a6b721e1a"
  },
  {
   "source": "Paperpal pricing",
   "url": "https://paperpal.com/pricing",
   "figure": "€ 10,4",
   "value": 10.4,
   "unit": "EUR",
   "vat": null,
   "axis": {},
   "retrieved_at": "2026-10-12",
   "quote": "€ 10,4/mo",
   "source_class": "primary-provider-own-site",
   "text_sha256": "55b93dbc1f3eb0887eb190adfb7d6fed03982833cc03b40b8abdc698e6768360"
  }
 ],
 "not_published": [
  {
   "source": "Covidence pricing",
   "url": "https://www.covidence.org/pricing/",
   "retrieved_at": "2026-10-12",
   "reason": "every candidate on the page was refused"
  },
  {
   "source": "Rayyan platform",
   "url": "https://www.rayyan.ai/",
   "retrieved_at": "2026-10-12",
   "reason": "read in full and no accepted figure on the page"
  },
  {
   "source": "DistillerSR review software",
   "url": "https://www.distillersr.com/products/distillersr-systematic-review-software",
   "retrieved_at": "2026-10-12",
   "reason": "every candidate on the page was refused"
  },
  {
   "source": "Elicit product",
   "url": "https://elicit.com/",
   "retrieved_at": "2026-10-12",
   "reason": "read in full and no accepted figure on the page"
  },
  {
   "source": "SciSpace plans and pricing",
   "url": "https://scispace.com/typeset-pricing/",
   "retrieved_at": "2026-09-12",
   "reason": "every candidate on the page was refused"
  },
  {
   "source": "Nested Knowledge pricing",
   "url": "https://about.nested-knowledge.com/pricing/",
   "retrieved_at": "2026-09-12",
   "reason": "read in full and no accepted figure on the page"
  },
  {
   "source": "Sysrev pricing",
   "url": "https://dev.sysrev.com/pricing",
   "retrieved_at": "2026-09-12",
   "reason": "read in full and no accepted figure on the page"
  },
  {
   "source": "LASER AI",
   "url": "https://www.laser.ai/",
   "retrieved_at": "2026-10-12",
   "reason": "read in full and no accepted figure on the page"
  },
  {
   "source": "Trinka pricing",
   "url": "https://www.trinka.ai/pricing",
   "retrieved_at": "2026-10-12",
   "reason": "read in full and no accepted figure on the page"
  },
  {
   "source": "Paperpile reference manager comparison",
   "url": "https://paperpile.com/r/best-reference-manager/",
   "retrieved_at": "2026-10-12",
   "reason": "every candidate on the page was refused"
  },
  {
   "source": "Zotero storage plans",
   "url": "https://www.zotero.org/storage",
   "retrieved_at": "2026-09-12",
   "reason": "every candidate on the page was refused"
  },
  {
   "source": "Litmaps pricing",
   "url": "https://www.litmaps.com/pricing",
   "retrieved_at": "2026-10-12",
   "reason": "read in full and no accepted figure on the page"
  },
  {
   "source": "EndNote buy",
   "url": "https://endnote.com/buy",
   "retrieved_at": "2026-10-12",
   "reason": "every candidate on the page was refused"
  },
  {
   "source": "Grammarly plans",
   "url": "https://www.grammarly.com/plans",
   "retrieved_at": "2026-10-12",
   "reason": "every candidate on the page was refused"
  },
  {
   "source": "ASReview",
   "url": "https://asreview.ai/",
   "retrieved_at": "2026-10-12",
   "reason": "read in full and no accepted figure on the page"
  },
  {
   "source": "CADIMA",
   "url": "https://www.cadima.info/index.php",
   "retrieved_at": "2026-09-12",
   "reason": "read in full and no accepted figure on the page"
  },
  {
   "source": "Colandr",
   "url": "https://www.colandrcommunity.com/",
   "retrieved_at": "2026-10-12",
   "reason": "read in full and no accepted figure on the page"
  },
  {
   "source": "Semantic Scholar API",
   "url": "https://www.semanticscholar.org/product/api",
   "retrieved_at": "2026-09-12",
   "reason": "read in full and no accepted figure on the page"
  },
  {
   "source": "Dimensions free access",
   "url": "https://www.dimensions.ai/products/free/",
   "retrieved_at": "2026-10-12",
   "reason": "read in full and no accepted figure on the page"
  },
  {
   "source": "Clarivate Web of Science",
   "url": "https://clarivate.com/academia-government/scientific-and-academic-research/research-discovery-and-referencing/web-of-science/",
   "retrieved_at": "2026-09-12",
   "reason": "read in full and no accepted figure on the page"
  },
  {
   "source": "Evidence Partners",
   "url": "https://www.evidencepartners.com/",
   "retrieved_at": "2026-10-12",
   "reason": "read in full and no accepted figure on the page"
  },
  {
   "source": "AHRQ Systematic Review Data Repository (SRDR+)",
   "url": "https://srdrplus.ahrq.gov/",
   "retrieved_at": "2026-10-12",
   "reason": "read in full and no accepted figure on the page"
  }
 ],
 "sources": [
  {
   "url": "https://www.covidence.org/pricing/",
   "label": "Covidence pricing",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www.rayyan.ai/pricing",
   "label": "Rayyan pricing",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www.rayyan.ai/",
   "label": "Rayyan platform",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www.distillersr.com/products/distillersr-systematic-review-software",
   "label": "DistillerSR review software",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://eppi.ioe.ac.uk/cms/er4/About/Aboutourfees/tabid/2937/Default.aspx",
   "label": "EPPI-Reviewer fees",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://elicit.com/pricing",
   "label": "Elicit pricing",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://elicit.com/",
   "label": "Elicit product",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://help.consensus.app/en/articles/10087865-subscription-plans",
   "label": "Consensus subscription plans",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://scispace.com/typeset-pricing/",
   "label": "SciSpace plans and pricing",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://jenni.ai/pricing",
   "label": "Jenni AI pricing",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://paperguide.ai/pricing/",
   "label": "Paperguide pricing",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://about.nested-knowledge.com/pricing/",
   "label": "Nested Knowledge pricing",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://dev.sysrev.com/pricing",
   "label": "Sysrev pricing",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www.laser.ai/",
   "label": "LASER AI",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://silvi.ai/",
   "label": "Silvi.ai",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www.undermind.ai/",
   "label": "Undermind",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www.trinka.ai/pricing",
   "label": "Trinka pricing",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www.trinka.ai/trinka-vs-grammarly",
   "label": "Trinka vs Grammarly pricing comparison",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://paperpile.com/pricing",
   "label": "Paperpile pricing",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://paperpile.com/r/best-reference-manager/",
   "label": "Paperpile reference manager comparison",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www.zotero.org/storage",
   "label": "Zotero storage plans",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www.litmaps.com/pricing",
   "label": "Litmaps pricing",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www.connectedpapers.com/pricing",
   "label": "Connected Papers pricing",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www.researchrabbit.ai/pricing",
   "label": "ResearchRabbit pricing",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://scite.ai/pricing",
   "label": "scite pricing",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://paperpal.com/pricing",
   "label": "Paperpal pricing",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www.sourcely.net/pricing",
   "label": "Sourcely pricing",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://endnote.com/buy",
   "label": "EndNote buy",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www.grammarly.com/plans",
   "label": "Grammarly plans",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://asreview.ai/",
   "label": "ASReview",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www.cadima.info/index.php",
   "label": "CADIMA",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www.colandrcommunity.com/",
   "label": "Colandr",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www.semanticscholar.org/product/api",
   "label": "Semantic Scholar API",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www.dimensions.ai/products/free/",
   "label": "Dimensions free access",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://clarivate.com/academia-government/scientific-and-academic-research/research-discovery-and-referencing/web-of-science/",
   "label": "Clarivate Web of Science",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www.evidencepartners.com/",
   "label": "Evidence Partners",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://srdrplus.ahrq.gov/",
   "label": "AHRQ Systematic Review Data Repository (SRDR+)",
   "license": "the publisher's own terms; quoted for reporting and comment"
  }
 ],
 "methodology": "Every row is a verbatim sentence read from the named source's own page through our fetch service on the date shown, hash-pinned to the stored read (the sha of the page's visible text; the raw page is mirrored to R2). 15 of the 37 named sources that could be read published a usable figure; 22 published none and are recorded as not published, never filled in; 0 could not be read (blocked, dead or unreachable) and count nowhere. The headline figures (median, minimum, maximum, quartiles) are over ONE figure per source for each breakdown it prices, in USD (a source's median where its page yielded several accepted sentences for one breakdown), so a page that gives figures for several breakdowns gives one for each and N counts 12 figures, never sentences; 104 candidate sentence(s) were refused by a reviewer with the reason recorded. The fuller derivation this dataset is chartered to grow into (not yet what the figures above are; they are each source's own published figure as read): median, minimum and maximum advertised price per user per month across every review tool that publishes one, split by student, individual and institutional tier and by review-platform versus AI-writer versus reference-manager; the count publishing versus quote-only; which support dual screening, AI screening, AI drafting, PRISMA flow export and an extraction matrix; the spread between the AI writers and the systematic-review platforms, and repriced-since the previous read",
 "embed": "<figure style=\"margin:0;padding:16px;border:1px solid #d9d9d9;border-radius:8px;background:#ffffff;color:#111111;font-family:system-ui,sans-serif;max-width:480px\"><p style=\"margin:0 0 8px;font-size:28px;font-weight:700;color:#111111;background:#ffffff\">17 USD</p><p style=\"margin:0 0 8px;font-size:14px;color:#111111;background:#ffffff\">median published figure, Literature Review Tool Index, across 11 sources, read 12 October 2026</p><figcaption style=\"font-size:12px;color:#444444;background:#ffffff\"><a href=\"https://calibvo.com/datasets/literature-review-tool-index/#median\" style=\"color:#1a4fd6;background:#ffffff\">Source: Calibvo Literature Review Tool Index</a></figcaption></figure>"
}
