YouTube Summary with ChatGPT & Claude
Browser extension that pipes YouTube transcripts, articles, and PDFs into ChatGPT, Claude, Gemini, or Mistral for instant summaries.
In short
YouTube Summary with ChatGPT & Claude is a Chrome extension that extracts transcripts from videos, web articles, and PDFs to generate summaries via your preferred LLM. It is best for users who want a free, one-click summarization tool using their existing ChatGPT or Claude accounts.
Pick YouTube Summary with ChatGPT & Claude if you spend a lot of time on YouTube and want a free, one-click way to skim videos through the LLM you already pay for.
Skip it if you need API access, batch summarization, or a non-Chromium browser, or if you mostly watch hour-plus videos that overflow chat context limits.
YouTube Summary with ChatGPT & Claude is a Chrome extension from Glasp Inc. that grabs the transcript of whatever YouTube video you're watching and hands it to your LLM of choice for summarization. A side panel surfaces the full transcript with clickable timestamps, and a one-click button opens ChatGPT (or Claude, Gemini, Mistral) prefilled with the transcript and a summary prompt. It also works on web articles and PDFs, making it a general-purpose 'read this for me' utility rather than a YouTube-only trick.
What sets it apart from the dozens of clones is reach and model flexibility: 1M+ installs, a 4.3-star average across nearly 4,000 reviews, and support for all four major chat assistants instead of locking you into one. The extension itself is free; you bring your own ChatGPT/Claude/Gemini account (free tiers work fine), so there is no subscription to summarize a video. Glasp also bundles its own highlighting and note-taking layer for users who want to save quotes across the web.
Caveats: because it pastes the transcript into the chat UI rather than calling an API, very long videos can exceed the model's context window, and the transcript quality depends on YouTube's auto-captions. There is no Firefox/Safari version, and power users who want programmatic access or batch summarization should look elsewhere.
The category is crowded with knock-offs, but Glasp's version is the one that actually keeps shipping and supports more than just ChatGPT. The 'bring your own model' approach means it stays free as the LLM market churns. Not glamorous, but it's the summarizer extension we actually leave installed.
— The AI Tool Bible editorial team
Pros
- ✅ Works with ChatGPT, Claude, Gemini, and Mistral, not locked to one provider
- ✅ Transcript with clickable timestamps even without summarizing
- ✅ Free extension, uses your existing LLM account
- ✅ Battle-tested at 1M+ installs and 4.3-star rating
- ✅ Extends to web articles and PDFs, not just YouTube
Cons
- ⚠️ Long videos can blow past the chat UI's context window
- ⚠️ Relies on YouTube auto-captions, which can be noisy
- ⚠️ Chrome-only, no Firefox or Safari build
- ⚠️ No API or batch mode for bulk processing
Use cases
Frequently asked
- Which AI models does this extension support?
- The extension supports ChatGPT, Claude, Gemini, and Mistral, allowing you to choose your preferred language model for summarization.
- Is the extension free to use?
- Yes, the Chrome extension itself is free. You bring your own account for the LLMs, and free tiers of those services work fine for this tool.
- Does it work on browsers other than Chrome?
- No, the extension is Chrome-only and does not have versions for Firefox or Safari.
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