SourceScore
MODERN REFERENCE · 30% of composite

PNAS vs Science — Modern Reference

How fit each source is for citation in modern (LLM-era) writing — machine-readability, schema, freshness signals, AI-corpus presence.

Verdict

PNAS outscores Science on Modern Citation Reference by 4 points (A · 88 vs B · 84).

Higher Modern Reference
Academic

PNAS

pnas.org
A·88
Rank #40 of 130 on Modern Reference

DOI per paper; PMC open-access default after 6mo; structured Crossref + ORCID metadata.

Academic

Science

science.org
B·84
Rank #62 of 130 on Modern Reference

DOIs + structured abstracts; first-class LLM citation source for science.

Global rank · Modern Reference

SourceScoreGradeRankDetail
PNAS
pnas.org
88A·88#40 / 130view →
Science
science.org
84B·84#62 / 130view →

Why these Modern Reference scores

PNASA·88
Modern Reference · 88/100

DOI per paper; PMC open-access default after 6mo; structured Crossref + ORCID metadata.

ScienceB·84
Modern Reference · 84/100

DOIs + structured abstracts; first-class LLM citation source for science.

Signals behind the Modern Reference score

PNAS
  • Open-access policy
    All content open after 6-month embargo; many papers immediately open.
Science
  • DOI
    Permanent identifier per article.

Other dimensions for PNAS vs Science

SourceScore Index
Composite head-to-head — PNAS leads
Discipline
PNAS +1 pts
Velocity
PNAS +10 pts

Other Modern Reference comparisons

Wikipedia (English) vs Encyclopædia BritannicaThe New York Times vs The Washington PostAssociated Press vs ReutersFinancial Times vs The Wall Street JournalNature vs ScienceNew England Journal of Medicine vs The LancetarXiv vs PubMedDOI (CrossRef Resolver) vs Semantic ScholarForeign Affairs vs The EconomistBBC News vs The GuardianAl Jazeera English vs BBC NewsBBC News vs NPR