01.
The frozen protocol
Inclusion criteria, exclusion criteria and search strings, locked before the search runs. No moving goalposts.
Systematic literature search, run overnight
Stop searching.Start reading.
One question in. A screened, ranked and fully documented literature base out.
240M+ works · Every decision logged · Ready to cite
The name is the method: six sentences from question to literature base.
The record
Not a chat transcript. A record you can defend.
SixSentences_ documents the search the way a methods chapter would. The protocol is frozen before the first query runs, every screening decision carries a written reason, and the final numbers reconcile. If a reviewer asks why paper 41 is out, the answer is one click away.
app.sixsentences.com
A REAL FINISHED SEARCH: 457 FOUND · 420 SCREENED · 30 INCLUDED
02.
The decision ledger
Every include and every exclude with its reason attached. Not a sample. All of them.
03.
The report
PRISMA style flow counts and citations, exported as RIS, BibTeX, CSL JSON or pushed straight to Zotero.
Between searches
A research assistant that shows its work.
Most days you are not running a review. You are checking a claim, chasing a reference, or reading. SixSentences_ keeps working between the big searches.
01 · grounded
Answers that show sources
The assistant quotes what it cites, cites what exists, and says so when it finds nothing. Every claim links back to a real paper.
02 · library
A living library
Retrieved full texts stay in your workspace. Read them in place, search inside them, and ask questions across everything you collected.
03 · pipeline
API and webhooks
Everything the interface can do, your scripts can do too. Start searches, pull results, and wire the record into your own pipeline.
The workspace
Your questions, your rules.
The morning after a search: your library on the left, the paper you are reading on the right, and a conversation in between that quotes its sources.
app.sixsentences.com
01 · model
Choose your model
Every question can run on the model you trust, or on auto, which picks the cheapest one that does the job. You decide which provider sees your text.
02 · tactic
Choose your tactic
A grounded quick answer in seconds, a deep screen over full texts, or the whole systematic method overnight. You set depth, criteria and scope per run.
03 · privacy
Privacy is the house rule
Your protocols, decisions and library stay in your workspace and serve no other purpose. Delete a chat, a search or the whole account any time, and it is gone.
Manuscript Studio
Write the manuscript where the evidence lives.
A structured authoring room with the search wired in: import Word or start from your own template, navigate a live outline, let the assistant propose edits, connect your own sources and research data, and compile the PDF as you write.
app.sixsentences.com
THE SEARCH FROM ABOVE, WRITTEN UP: ITS 30 INCLUDES ARE THE BIBLIOGRAPHY
01 · cite
A bibliography with receipts
references.bib combines the include set of your searches with your own PDFs, BibTeX and RIS. Every source receives a real key before the assistant can cite it.
02 · edit
Edits arrive as proposals
Ask for a rewrite and you get a diff: exact find and replace, applied only when you accept it. Highlight a passage in the PDF and discuss exactly that passage.
03 · results
Your data joins the argument
Import CSV, JSON or Excel with provenance and missingness intact. Ask the assistant to use exact values, or turn them into a deterministic chart for the paper.
Sources & exports
Searched in full, exported in yours.
Every search sweeps the major catalogs in one pass: more than 240 million scholarly works spanning PubMed, Crossref, arXiv and DOAJ, unified in one open index. Grey literature joins in from the open web, and full texts are retrieved wherever they are openly available.
Visit openalex.orgOpenAlex
OpenAlex
PubMed
Crossref
arXiv
DOAJ
DOI
Zotero
BibTeX
RIS
CSL JSON
JSON API
webhooks
Pricing
Start free. Scale when the reviews do.
Each step unlocks a coherent research layer, from a free core workspace through discovery, the complete solo system and team collaboration. One calm meter shows the monthly capacity left; usage follows the work actually performed.
Free
$0/month
Understand papers, organize your work and complete a real basic review.
- PDF chat, notes, projects and library
- Basic systematic search and screening
- 100 MB storage · up to 20 PDFs
- Up to 150 works per run
- Starter monthly capacity
Scout
$9/month
For focused projects that need stronger discovery, imports and research tooling.
- Everything in Free
- Live, semantic and citation discovery
- Boolean search, Zotero and database imports
- Document imports and Visual Lab starter
- 1 GB storage · up to 250 PDFs
Popular
Scholar
$29/month
The complete solo research system, from discovery to a finished manuscript.
- Everything in Scout
- Full text, deep screening and web sources
- Complete Manuscript Studio and Visual Lab
- Evidence extraction, API and living reviews
- 10 GB storage · up to 2,500 PDFs
Cohort
$99/month
For labs and reading groups that share one workspace and one record.
- Everything in Scholar
- Shared workspace for up to 10 researchers
- Pooled team capacity and reviewer coordination
- 25 GB storage · up to 10,000 PDFs
- Up to 30,000 works per run
Atlas
Everything in Cohort plus institution controls, governance, custom capacity, storage and rollout support on infrastructure that fits your procurement.
FAQ
Fair questions, straight answers.
The things researchers ask before they trust a tool with their methods chapter. If you need more, write to us and a person answers.
Early access
Six sentences away.Be first in line.
We are onboarding researchers in small waves. Leave your email and we will wake you when it is your turn.
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