Methodology & Source Trust
How we decide a source is Left, Center, or Right — and the data behind every rating.
Transparent ratings
Every source links to its public AllSides and Ad Fontes record.
Balanced sourcing
We aggregate Left, Center, and Right outlets so no single lean dominates.
No editorial spin
We don't write articles. We aggregate, classify, and let you compare directly.
How a source gets its bias label
- We start from the widely-cited AllSides Media Bias Chart — a community-and-expert-rated bias score for every major outlet.
- We cross-reference with Ad Fontes Media's interactive chart, which scores both bias and factual reliability.
- Where the two disagree, we default to the more conservative classification (closer to Center) and surface the disagreement on this page.
- Bias percentages on each story are computed from the mix of sources covering it, not from article content itself — we don't pretend to classify article-level bias automatically.
- Anyone can submit a correction by emailing hello@prism-news.com. We review weekly and publish a public changelog.
All tracked sources
| Source | AllSides | |
|---|---|---|
| CNN | Lean Left | Details |
| The Guardian | Lean Left | Details |
| The New York Times | Lean Left | Details |
| Politico | Lean Left | Details |
| BBC News | Center | Details |
| Reuters | Center | Details |
| Christian Science Monitor | Center | Details |
| Fox News | Right | Details |
| The Wall Street Journal | Lean Right | Details |
| New York Post | Right | Details |
| Washington Examiner | Lean Right | Details |