What is an AI fact checker?

An AI fact checker is a tool that uses language models and grounded web search to verify factual claims automatically. DebateGuard extracts each claim from live speech and returns a verdict with sources in seconds.

Is there a free real-time fact checker?

Yes. DebateGuard's real-time fact checker is free for up to 5 debates per day, with full AI verification, sources and counter-arguments.

How does DebateGuard fact check claims?

Audio is transcribed to text, each verifiable claim is isolated, and Google Gemini 2.5 with grounded web search compares it to current sources. A verdict — truth, lie, misleading or uncertain — is returned with citations and a confidence score.

Can I fact check a YouTube video or podcast?

Yes. Play the audio near your device (or route system audio to the mic) and DebateGuard will transcribe and fact-check claims live.

Free · Real-time · Sources included

AI Fact Checker for Real-Time Fact Checking

DebateGuard is a free online fact checker that verifies claims live during debates, podcasts, interviews and speeches. Transcribe, extract, verify and cite — in seconds.

Real-time fact checking

Verdicts appear while the speaker is still talking. No 30-second wait, no manual copy-paste.

Grounded web search

Every claim is compared to current sources with Google Gemini 2.5 — not just model memory.

Sources and confidence

Each verdict ships with citations and a confidence score so you can audit the reasoning.

Truth / Lie / Misleading / Uncertain

A misleading true number is still flagged. Opinions are marked as unverifiable, not judged.

How the fact checker works

1. Start a session in the browser — mic access is enough.
2. Speak, or play a podcast/video nearby.
3. DebateGuard transcribes each sentence and isolates verifiable claims.
4. A grounded search model checks each claim against current sources.
5. A verdict — truth, lie, misleading or uncertain — appears on screen with citations.
6. Save to history and export the report as PDF.

Who uses an AI fact checker?

· Debate teams and coaches preparing rebuttals
· Journalists fact-checking interviews live
· Podcasters and streamers running claim overlays
· Students verifying lectures and study material
· Policy analysts auditing political speeches
· Anyone tired of confidently wrong AI answers

Fact checker FAQ

Is DebateGuard's fact checker free?

Yes — up to 5 fully fact-checked debates per day on the free plan. Pro ($5/mo, 7-day trial) adds unlimited debates, PDF export and the AI debate coach.

How accurate is the AI fact checker?

Verdicts are grounded against current web sources, not just model memory. Each answer carries a confidence score and citations so you can verify the reasoning yourself.

Can I fact check a live stream or podcast?

Yes. Play the audio near your device or route system audio to the mic — DebateGuard transcribes and fact-checks the stream in real time.

Does it work on mobile?

Yes — any modern mobile browser, an Android app, and iOS as a PWA installed from Safari.

Fact check your next debate

Free, no install, sources included.