FactFrame - Fact-Check YouTube Captions

About

FactFrame
Verify claims on YouTube in real time.

FactFrame is a browser extension that brings live fact-checking to YouTube. While you watch, it monitors video captions, searches the web, and uses your preferred LLM to evaluate claims — all from a simple side panel.

What FactFrame Does

With captions enabled, FactFrame can:

Track recent caption text in real time
Search the web through your preferred provider
Use an LLM to assess factual claims
Show clear verdicts with supporting source links
Features
Live fact-checking as videos play
Search provider choice: Tavily, Exa, Perplexity, or Brave
LLM flexibility: OpenAI-compatible models or Anthropic Claude
Deeper verification workflows with optional two-stage query generation
Transcript-aware analysis for better context
Privacy-first setup with local-only API key storage
Setup
Install FactFrame
Open a YouTube video with captions enabled
Open the FactFrame panel and configure your API keys
Watch normally while FactFrame surfaces fact-checks automatically
Privacy

FactFrame is built with privacy in mind:

API keys stay on your device in local browser storage
Data is sent only to the providers you choose
No tracking, analytics, or external backend
Note

FactFrame is designed to assist with fact-checking, not replace independent judgment. Always verify important information using trusted sources.