Jenni AI vs SciSpace: Where Each One Earns Its Place

Jenni did four jobs on one paragraph without leaving the document. SciSpace did the same four in three places: a Paraphraser page, a notebook and an Agent chat.

Jenni is a research workspace: the editor, the citation search, the reviews and the export sit in one document. SciSpace, from PubGenius Inc., is a research platform built around an AI Agent and a search index of 280M+ papers, with a writer it calls a notebook.

The four jobs are the ones every draft goes through: a sentence to fix, a claim to cite, an argument to check, a file to send. Jenni came out ahead on all four. SciSpace came closest on the argument, where its Agent worked for 8 minutes 17 seconds and returned seven further sources.

Every count and quote below was read off the screen as the test ran.

<CTA title="Keep the draft, the sources and the checks in one place" description="Rewrite a sentence, cite at the cursor and run a review without leaving the document" buttonLabel="Try Jenni Free" link="https://app.jenni.ai/register" />

TLDR: Jenni or SciSpace?

Write the paper in Jenni: in one document, it rewrote the sentence with a tracked change, cited the trial with a complete APA 7th reference, and ran two reviews in 76 seconds. Use SciSpace for the search around the paper: its Agent audited the paragraph against four paper sources and returned seven more references.

How this was tested

The same four jobs in both tools, on the same paragraph, reported starting with the job where the two differ most.

• What went in - a 201-word paragraph on lipid nanoparticles and CRISPR delivery, typed into a new document in each tool.

• What was planted - an agreement error, "There is a lot of things that still needs", and a triple hedge, "could perhaps maybe".

• What could be checked - one trial result: serum transthyretin down a mean 87 percent at the higher dose (Gillmore et al., NEJM 2021). The abstract gives 52% at 0.1 mg per kilogram and 87% at 0.3.

• Like against like - each SciSpace feature ran against its Jenni counterpart.

• Models - neither Jenni nor the SciSpace notebook shows a model choice. The SciSpace Agent offers Lite, Pro and Expert, and it ran on Lite.

• The last step - the export control. No file was downloaded.

The four jobs

The argument: two reviews in Jenni, one Agent run in SciSpace

Jenni - five reviews sit behind the Review button: Claim confidence, Peer Review, Source Quality, Tone of Voice and Proofread. Two were run: Claim confidence, for claims that lack a source, and Peer Review, for the argument.

Claim confidence needed 28 seconds and three database queries. It came back with two suggestions, one tagged Unsupported and one Weakly supported, each sitting on its sentence with a proposed paper, the paper's citation count and its impact factor.

Claim confidence in Jenni: the Unsupported card on the apolipoprotein E sentence, with the proposed source, its citation count and impact factor, and Accept or Reject.

• Unsupported, the apolipoprotein E sentence - Hosseini-Kharat, Bremmell and Prestidge, 2025, Molecular Therapy Methods & Clinical Development: 74 citations, impact factor 3.74, a review of why lipid nanoparticles target the liver. Accepted with one click, and the References section went to two sources.

• Weakly supported, the 87 percent sentence - a suggestion to replace the NEJM trial with a 2022 article that reports it second hand, because the stored excerpt of the trial left the number out. The number is in the trial abstract. Rejected with one click.

Peer Review took 48 seconds. It scored the paragraph 7 out of 10 and listed four weaknesses, three strengths and three questions for the author. One weakness is the planted hedge: it quotes 'perhaps maybe' and calls it "informal and overly hedged language".

Two comments were pinned to sentences. The Major one says the hedged sentence undersells the Selective Organ Targeting work and cites Wei et al., 2023, in Nature Communications. The Minor one asks again for a source containing the 87 percent figure.

Peer Review in Jenni after 48 seconds: the two commented sentences highlighted in the text, and the Weaknesses list naming the stacked hedge.

Both reviews ran inside the document, 76 seconds in total. Claim confidence edits the text when a suggestion is accepted; Peer Review comments and leaves the rewriting to the writer.

SciSpace - the notebook has no review. The matching feature is one of the 2,601 agents in the Agent Gallery: the Citation Audit Agent, described as a "line-by-line Citation Audit to flag unsupported claims".

Run Task opens the SciSpace Agent in a new tab with the prompt already written; the paragraph and its reference entry went in by hand. The model selector offers Lite, Pro and Expert, and the audit ran on Lite.

The run took 8 minutes 17 seconds. It searched SciSpace, SciSpace Full Text, Google Scholar and PubMed, listed 920 results across them, and wrote two Markdown files into the chat.

The SciSpace Agent at the end of its citation audit: eight DOI links, two Markdown files, and the model selector reading Lite.

• The audit file - one reference confirmed, one claim extracted, and that claim marked Could not be checked: "0 of 1 cited references reached readable evidence". The publisher had refused the Agent the full text.

• The revision file - the paragraph rewritten in seven sentences, seven notes on what changed, and reference lists in APA 7, MLA 9 and Chicago.

• The sources - eight, seven of them new, including the first SORT paper and a study published three days earlier. All eight are real records with working DOIs.

The Agent does not offer changes to accept or reject. It hands back a replacement paragraph, in which "the most clinically advanced" has become "among the most clinically advanced" and the triple hedge is gone.

A first run, without the reference entry, took 6 minutes 14 seconds and could not complete its formal audit. Its rewrite turned the dose sentence into "87% at one evaluated dose, with a larger reduction reported at the higher dose", which the abstract contradicts; the second run kept the original.

Winner - Jenni, on a check the writer can finish inside the document: two reviews in 76 seconds, one source filed with a click and two comments pinned to the sentences they concern. SciSpace's audit ran 8 minutes 17 seconds in a separate chat and returned a rewritten paragraph as a file.

<ProTip title="⚠️ Caution:" description="Check every number a full rewrite touches against the source abstract. One audit run changed which dose the 87 percent belonged to" />

The citation: which paper comes first?

Jenni - pressing Cite, or typing @, opens a search at the cursor. With the trial title typed in, the Discover tab put a 2022 reprint from the Yearbook of Pediatric Endocrinology first (48 citations, impact factor 0.00) and the NEJM trial second: 1.6K citations, an impact factor of 24.39 and an Open Access badge.

Jenni with the trial title typed in: the 2022 yearbook reprint first, the NEJM trial second with 1.6K citations and an impact factor of 24.39.

One click on Cite, on the NEJM card, put "(Gillmore et al., 2021)" at the cursor and opened a References section under the text. The entry is full APA 7th: 19 authors, an ellipsis, the last author, journal, volume, pages and DOI.

That is the form APA 7th sets for 21 or more authors, and this paper has 26. The style dropdown beside the list searches 10,000+ styles.

SciSpace - Cite in the notebook toolbar opens a panel headed Find references. The same title search put a 2021 mouse study first and the trial second. Each row shows a title, the first author, a count of co-authors and the year, with no journal or citation count.

The same title search in the SciSpace notebook: a mouse study first, the trial second, each row showing title, first author and year.

+ Cite inserted "(Gillmore et al., 2021)" and started a References section set to APA, with a picker that searches 100+ styles. The entry opens: "Gillmore, J. D., Gane, E. J., Taubel, J., Kao, J., Fontana, M., Maitland, M. L., Seitzer, J., O’connell, D. J. C., Walsh, K. R., M, W. K., & Phillips, J. (2021)."

That is 11 names closed with an ampersand, for a paper with 26 authors, and the tenth is printed "M, W. K." where the author is Kristy Wood. SciSpace's own Agent, shown this entry during the audit, noted that "its author list and capitalization needed correction".

In both tools the citation landed after the full stop. APA places it before, and neither tool corrected that.

Winner - Jenni, on the reference entry a supervisor would accept: the APA 7th author list in full form with its DOI, picked from cards that show the journal and the citation count.

<ProTip title="🔍 Watch out:" description="Read the journal line before you cite. The same title search put a reprint first in one tool and a mouse study first in the other" />

The sentence: one command against a second tool

Jenni - select the sentence (43 words, by the counter in the menu) and five actions appear: Find citations, AI Chat, AI Edit, Comment, Review. Improve fluency, under AI Edit, came back after four seconds:

"Several questions remain, including how the particles behave outside the liver, whether repeat dosing triggers an immune response, and what the long-term editing outcomes are at off-target sites."

That is 28 words. The result card marks every deletion and insertion (See edits), and the What changed and why note under it reads: "Replaced 'There is a lot of things that still needs to be worked out' with 'Several questions remain' and streamlined the list for fluency." Replace Selection swapped it into the paragraph.

The Improve fluency result in Jenni: deletions crossed out, insertions highlighted, and the reason for the change underneath.

SciSpace - the notebook has no rewrite command. Selecting the sentence opens no menu, and Ask AI writes new text at the cursor. Rewriting is a separate tool, the Paraphraser, with modes for Academic, Fluent, Formal and more.

Pasted in and run on Fluent, the sentence came back in under two seconds:

"There are still many things that need to be worked out, for example how the particles behave outside the liver, whether repeated dosing triggers an immune response, and what the long-term editing results look like at off-target sites."

The SciSpace Paraphraser on Fluent: the original sentence on the left, the 38-word rewrite on the right.

That is 38 words. Agreement is fixed and both compound modifiers are hyphenated; the frame "many things that need to be worked out, for example" stays. There is no tracked change and no reason, and it goes back into the notebook by hand.

Winner - Jenni, for the sentence that needs no second edit: 28 words that lead with the point, against 38 that keep the frame of the original.

<ProTip title="✅ Quick check:" description="Count the words before and after a rewrite. A fix that comes back nearly the same length has usually kept the padding" />

The file: what the last step offers

Jenni - Export sits in the three-dot menu and offers Word (.docx) or LaTeX (.tex). For Word, the first choice is how citations travel: as native Word citations, which remain live fields under the References tab, or as hyperlinks for Google Docs.

Four layout presets follow: Jenni default, double-spaced manuscript, two-column paper, and thesis or report (title page and table of contents). LaTeX comes as a .tex with its .bib file. There is no PDF export from Jenni; Word saves one.

SciSpace - the notebook has one export control, Export .docx, on the top bar and in the File menu. The test stopped at that button, so the file itself was not opened. Other outputs are Agent tasks, among them a Word document, a PPT presentation and a LaTeX manuscript.

Winner - Jenni, on the choices at the export step: Word with native citation fields or hyperlinks, LaTeX with its .bib file, and four layout presets, against a single Export .docx button.

<ProTip title="📌 Remember:" description="Ask the journal or the supervisor for the file type early. A Word file with live citation fields, a LaTeX bundle and a PDF are three different exports" />

Where Jenni is ahead

In this test, four things happened on the Jenni side only:

• A rewrite that shows its working - the tracked change and a one-line reason, on screen before the sentence was replaced in place.

• Source cards with the evidence on them - journal, year, citation count and impact factor, which is how the trial was told apart from its reprint.

• A reference entry that was already right - the full APA 7th author list and the DOI, in a list that restyles across 10,000+ styles.

• Reviews that answer in the document - Accept or Reject on each proposed source and comments pinned to the sentence, in 76 seconds for both.

What SciSpace has that Jenni does not

SciSpace does three things Jenni does not, each listed with what takes its place:

• An Agent with a gallery of ready-made tasks - 2,601 agents for jobs such as screening studies or searching patents, each a multi-step task that searches, writes files and reports back. Jenni has no agent gallery; its AI Chat and five Reviews work on the document that is open.

• Tables pulled out of PDFs - Extract Data compares papers across up to 50 columns and sends the table out as CSV, Excel, RIS, BIB or XML. Jenni has no extraction table; its AI Chat reads an attached PDF and the Library searches the full text.

• Slides, posters and journal templates - the Agent offers PPT presentations and LaTeX posters as outputs, and SciSpace keeps a library of templates in MS-Word format. Jenni sends out the paper itself, as Word or LaTeX, in four layout presets.

What each tool costs

Standard prices from each pricing page: the price of one month, and the price of a year paid yearly.

October 2026 pricing, from jenni.ai/pricing and scispace.com/pricing.

The first paid tier costs the same by the year: $144 on both sites. Above that, Jenni Pro is $348 a year, SciSpace Advanced $840 and Max $1,920. Month by month, Jenni is $30 and $73, SciSpace $20, $90 and $200.

With Jenni, the higher tier lifts the caps on writing: autocomplete, edits, reviews and PDF size. With SciSpace, it buys Agent capacity: credits, stronger models and more chats at once.

<ProTip title="⏳ Timing:" description="Price the tool against the stage you are in: the monthly figure for a search that lasts weeks, the yearly figure for a thesis" />

Which one should you use?

Jenni for the writing: the draft, its citations, the review and the export. SciSpace when the job in front of you is the search.

The same paragraph has also been run against two chat assistants, in Jenni vs ChatGPT and Jenni vs Claude, and a checker, in Jenni vs Paperpal. Three readers follow, each with a pick.

The PhD student drafting the literature chapter

Jenni - a thesis chapter is three motions repeated: write a claim, cite it, check it. Jenni does all three at the cursor, and the reference list grows with the chapter. If you are writing a thesis from a Zotero or Mendeley library, the papers import.

Send the SciSpace Agent out when a chapter still needs sources.

The researcher two weeks from a journal submission

Jenni for the submission file - journals ask for a double-spaced Word file with working citations, which is one layout preset and one citation setting at export. The two reviews took 76 seconds on the test paragraph.

SciSpace for the evidence behind it - if the paper rests on a systematic search, or on the same data points pulled from a stack of PDFs, run that in the Agent or Extract Data first.

The Masters student writing a dissertation to a deadline

Jenni - a dissertation is one long document with one reference list, and both stay in the same place. Cite while writing, run Claim confidence on each chapter, and export to Word in the layout the department asks for.

Open SciSpace if the literature search has stalled, and keep the DOI of anything it finds.

<CTA title="Write the next section with its references already in place" description="Cite at the cursor, run Claim confidence and Peer Review, then export to Word or LaTeX" buttonLabel="Start Writing Free" link="https://app.jenni.ai/register" />

SciSpace is built around its Agent, and the Agent is the part to use: a search across several databases, a screening pass, an extraction table.

In Jenni the paragraph never left its document. The sentence was fixed with the reason on screen, the trial was cited with a complete reference, and two reviews came back in 76 seconds.

If the search has to cover hundreds of papers first, start it in the SciSpace Agent and bring the sources back with their DOIs. Then draft, cite and review the paper in Jenni.