We built a radar for the truth.

Every day, hundreds of millions of people encounter claims that feel true, spread like wildfire, and turn out to be false or wildly out of context. A video "goes viral" before anyone has checked whether the story behind it is real. A screenshot of a statistic circulates for years after the number was debunked. A satire article gets shared as news.

Traditional fact-checking organizations do important work, but they can only cover so much. They focus on politics and breaking news. They can't keep up with the volume of viral content across TikTok, Instagram, Reddit, and X. And their findings are often buried where people who've already seen the false claim will never find them.

TruthRadar exists to fill that gap. It's fast, it covers everything — from paranormal claims to pop culture to health myths — and it publishes every fact-check as a permanent, searchable page.

TruthRadar is built on Perplexity's Sonar Pro API, which combines large language model reasoning with real-time web search. Unlike AI systems that rely on a fixed training cutoff, Sonar searches the live web when answering — so the fact-checks reflect what sources actually say today, not what the model was trained on two years ago.

Our system extracts the primary claim from whatever content you submit, searches for corroborating and contradicting evidence across credible sources, evaluates the weight of that evidence, and returns a structured verdict. The sources used are always disclosed so you can read the underlying material yourself.

We also maintain a growing library of evergreen fact-checks — the most commonly searched claims about history, science, health, paranormal topics, pop culture, and more. These are written, reviewed, and published as standalone reference pages.