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Read YouTube captions, get AI summaries and click-to-fact-check claims with your own ChatGPT, Claude or Gemini. Turn the captions YouTube already provides into AI summaries and on-demand fact-checks — using your own ChatGPT, Claude or Gemini account. No backend, no signup, no analytics. SUMMARIZE • One compact AI button over the YouTube player (watch, live and Shorts) • Timestamp-linked bullet summaries plus an evidence-based bias assessment • Editable prompt presets with {{TITLE}}, {{URL}} and {{TRANSCRIPT}} variables • Built-in Deep research & fact-check, Summary & bias, and Quick summary presets • Output language of your choice • The complete prompt is opened, inserted and submitted automatically in ChatGPT, Claude or Gemini LIVE FACT-CHECK (experimental) • Flip the shield toggle: checkable claims are marked over the video while it plays • Claim detection runs locally with a lightweight heuristic — no network or AI calls • Click a claim and your AI provider fact-checks exactly that statement with live web research, a verdict and cited sources • In fullscreen the video shrinks to picture-in-picture and keeps playing while you read the result • Every check is one explicit click — nothing is ever sent automatically PRIVACY • Caption and page requests go only to YouTube • A generated prompt is kept briefly in session-only extension storage and removed once the provider page consumes it • No custom backend, no account, no analytics, no data collection NOTES • Works only on videos that have YouTube captions; the extension contains no speech-to-text engine • You need your own ChatGPT, Claude or Gemini account • Not affiliated with or endorsed by YouTube/Google, OpenAI or Anthropic; all trademarks belong to their owners
Aug 8, 2026
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