Assessment begins where reading happens
Bring in a screen, PDF, DOI, file, or pasted text. Syllogos organizes the material for assessment without forcing you to rebuild your workflow around the application.
Syllogos provides a structured, evidence-linked assessment of a study’s methods, evidentiary support, contribution, coherence, sources, and limitations. CRAF 4.0 is informed by criteria commonly considered in rigorous peer review, including at journals ranked in the first quartile (Q1).
AI structures the assessment · You retain scholarly responsibility

Fig. 01Eight assessment workflows and source comparison, available without leaving the material you are reading.
A guided introduction to the reasoning behind Syllogos, the CRAF 4.0 framework, and the evidence-linked workflow that keeps scholarly judgment in your hands.
Three minutes on why research quality deserves more than a summary.
4K product filmFilm 01Why Syllogos — a guided product overview
Sound on · Fullscreen available
CRAF 4.0 examines methods, evidence, originality, theory, literature, sources, writing, peer-review status, reflexivity, and ethical or institutional standards in one structured assessment.
Bring in a screen, PDF, DOI, file, or pasted text. Syllogos organizes the material for assessment without forcing you to rebuild your workflow around the application.
Examine methods, validity, novelty, coherence, sources, bias, or run the complete CRAF 4.0 assessment. Each action presents its criteria, evidence, and limitations in a structured form.
Artificial intelligence organizes and analyzes the evidence; the researcher examines the result, supplies disciplinary context, and remains responsible for its interpretation.
Critical appraisal develops through sustained peer review, methodological training, and disciplinary practice. Syllogos makes those evaluative criteria more explicit and easier to apply while preserving the researcher’s responsibility for interpretation.
The questions used in rigorous peer review become explicit and learnable.
Every assessment connects its reasoning to the study in front of you.
Five research paradigms open each assessment to dialogue and challenge.
Interpretation and research decisions remain with the researcher.
CRAF 4.0 does not reduce a study to an isolated score. It connects methodology, validity, contribution, theory, literature, sources, writing, peer status, bias, and institutional or ethical standards in one multidimensional assessment.
Pre-registered design with a power analysis
Syllogos follows a transparent appraisal sequence: identify the evidence, apply explicit criteria, determine the quality band, and present an assessment for the researcher to examine.
We conducted a multicentre, pre-registered study across four research hospitals. The primary outcome and exclusion criteria were specified before data collection.
Sample size was established through an a priori power analysis targeting 90% power at α = .05.E1
Missing observations were handled using multiple imputation. Attrition was reported by site, although two withdrawals were not assigned a reason.
The evidence is organized so the researcher can inspect, question, and interpret the assessment.
Syllogos does not present AI output as a definitive conclusion. It organizes evidence, explains the assessment, and keeps every finding open to review, dialogue, and challenge.
“The authors report a pre-registered protocol and justify the sample size through an a priori power analysis.”
The assessment identifies what in the study supports each finding, so its reasoning can be examined rather than accepted uncritically.
Research is assessed in relation to its field, epistemic assumptions, methods, and the traditions of knowledge in which it operates.
Possible bias, missing evidence, methodological limits, and unresolved questions remain part of the report instead of being hidden by a score.
From first input to dialogic review, each screen supports one purpose: making rigorous research assessment clearer, faster, and more accessible.

Open Syllogos over the source when you need it, then hide it without interrupting the work in front of you.
Works where the literature already lives
A continuous path from reading to structured evaluation, dialogue, comparison, and a better-informed research decision.
Use the screen, a PDF or file, a DOI, or pasted text without leaving your reading workflow.
Select a quick overview, a focused evaluation, a complete CRAF report, or comparison between sources.
Review the score, quality band, evidence, strengths, weaknesses, limitations, and questions for deeper reading.
Question the assessment through five research paradigms, then compare studies when claims or conclusions diverge.
Free to start. No credit card required. Windows & macOS.