Kristal

Kristal is your AI companion for YouTube. It watches alongside you, automatically fact-checks what's being said every 20
seconds, and lets you ask questions about the video at any time — all without interrupting your viewing experience.

How it works:
→ Navigate to any YouTube video or Short
→ Kristal appears and asks if you'd like to watch together
→ Click yes — captions turn on automatically
→ Kristal begins fact-checking in real time, scoring every claim from 0–100

Two modes:
◆ Fact Check — Kristal automatically analyzes what's being said every 20 seconds and delivers a summary, key claims,
verdict, and accuracy score
◆ Ask — Switch to have a live conversation about the video. Ask anything about what's been said so far

You don't have to stay on the video. Minimize Kristal and go do other things — it keeps listening in the background.
Come back whenever you want to check in.

Works on YouTube videos and YouTube Shorts.

Privacy & Safety:
→ No personal data is collected or stored
→ Video captions are sent to Anthropic's API only to generate fact-checks and answers, and are not retained after the
session ends
→ Your browsing activity is never tracked or shared
→ All processing happens in real time and is discarded when you close the tab