Best Free YouTube Video Summarizers Powered by AI (2025)

As YouTube continues to grow as a major source of educational, professional, and entertainment content, the need for fast, accurate video summarization has never been greater. Whether you’re a student, researcher, or busy professional, AI summarization tools can save you valuable time by delivering key insights in just minutes.

In 2025, we have a wide selection of AI-powered YouTube summarizers—from free browser extensions to advanced web apps and fully integrated AI assistants. Here’s a curated list of the best tools available this year.

Top AI Tools for Summarizing YouTube Videos

1. Eightify

Eightify is a popular Chrome extension and mobile app (iOS/Android) that adds a one-click “Summarize” button directly on YouTube. It provides:

• Bullet-point summaries
• Timestamped key moments
• Full transcripts
• Top-comment insights
• Supports over 40 languages
• Best for: Quick summaries of long videos—perfect for students and professionals.
• User feedback: Highly praised for its accuracy and speed.
• Pricing: Free with optional paid plans for premium features.

2. Notta

Notta delivers high-accuracy transcription and video summarization with real-time transcription, cloud syncing, and searchable transcripts linked to video/audio segments.

• Best for: Journalists, researchers, and anyone who needs precise transcriptions.
• Key Features: Up to 98.86% transcription accuracy, supports real-time meetings and uploaded files.
• Pricing: Free plan available; Pro plan recommended for unlimited transcription and editing.

3. NoteGPT

NoteGPT is a versatile summarizer powered by GPT-4 and Claude 3, offering:

• Fast and accurate transcript extraction
• Summaries in over 50 languages
• Customizable summaries by tone, depth, and focus
• Visual aids like mind maps and flashcards
• PowerPoint slide generation from summaries
• Best for: Students, educators, and professionals who want flexible, in-depth summaries.
• Pricing: Free with premium Pro+ plans for full features.

4. Xmind AI

Xmind AI combines summarization with mind-mapping tools, visually organizing video content for better comprehension.

• Best for: Visual learners who prefer to explore content graphically.
• Pricing: Paid plans only.

5. GPT Breeze (Chrome Extension)

GPT Breeze is a privacy-focused Chrome extension that provides timestamped YouTube summaries. It allows users to connect their own OpenAI API keys for added security.

• Best for: Quick, privacy-conscious summaries directly on YouTube.
• Pricing: Free with optional premium features.

6. Monica (YouTube Summary with ChatGPT)

Monica is a simple browser extension and web app that uses ChatGPT to generate quick video summaries.

• Best for: Users looking for easy-to-use, ChatGPT-powered summaries.
• Pricing: Free plan with limited daily summaries; Pro plan starts at $8.30/month.

7. Mapify

Mapify transforms YouTube videos into structured mind maps, offering multilingual support, timestamp navigation, and export options (PDF, PNG, SVG).

• Best for: Visual learners and quick comprehension of complex videos.
• Pricing: Free and paid plans starting at $5.99/month.

8. MaxAI

MaxAI uses advanced natural language processing (NLP) to condense YouTube videos into concise summaries.

• Best for: Summarizing content in multiple languages with real-time Q&A capabilities.
• Pricing: Free and Pro plans available.

9. Krisp.ai

Krisp.ai offers quick video summarization by simply pasting the YouTube link, supporting a variety of video and audio formats.

• Best for: Fast, straightforward summaries without extra setup.
• Pricing: Free and Pro plans.

10. Wordtune

Wordtune provides real-time video summarization via web app and Chrome extension, with a clean, user-friendly interface.

• Best for: Everyday users looking for reliable, AI-generated summaries.
• Pricing: Free with optional premium features.

11. Mindgrasp

Mindgrasp offers cross-platform video summaries on web, Chrome, and Safari. It generates concise overviews quickly and efficiently.

• Best for: Users needing flexible, multi-device support.
• Pricing: Free with optional paid plans.

Other Notable Tools

• YouLearn AI: Simple copy-paste YouTube summarizer with free access.
• Glasp, Clipwise, Summarize.tech, Otter.ai, docsbot.ai: Highly rated alternatives listed in NoteGPT’s top recommendations.
• Reddit Recommendations:
  • Lilys.ai: Known for well-structured summaries.
  • Blackbox: Frequently recommended for free summarization.

AI Assistant Integrations

Google Gemini (YouTube/Drive)

Google’s Gemini 2.0 “Flash Thinking” model now summarizes YouTube videos with detailed timestamps. In Google Drive, Gemini can extract action items from video content—a feature rolling out since May 28, 2025.

• Best for: Google Workspace users needing integrated video summaries.
• Pricing: Free

Google NotebookLM

NotebookLM is Google’s AI-powered research notebook that can process YouTube transcripts, generate summaries, suggest follow-up questions, and even create audio overviews.

• Best for: Academic researchers and professionals working with complex video materials.
• Pricing: Free

Comparison Table

Final Recommendations

• For Fast, Simple Summaries: Try Eightify, GPT Breeze, or Monica for instant YouTube summarization.
• For High-Accuracy Transcripts: Choose Notta.
• For Customizable, Visual Summaries: Use NoteGPT or Xmind AI.
• For Professional/Enterprise Users: Google’s Gemini and NotebookLM offer seamless AI integration across the Google ecosystem.