Contextly: YouTube AIアシスタント。要約、書き起こし、翻訳 - ChatGPT icon

Contextly: YouTube AIアシスタント。要約、書き起こし、翻訳 - ChatGPT

Extension Actions

How to install Open in Chrome Web Store
CRX ID
phdbpolhebdgigogohapfgmggapnpdlb
Status
  • Extension status: Featured
  • Extension status: In-App Purchases
Description from extension meta

任意のYouTubeトランスクリプトとチャット:リアルタイムAI要約・要約、SponsorBlock、翻訳、ChatGPT、Gemini、Claudeによる翻訳

Image from store
Contextly: YouTube AIアシスタント。要約、書き起こし、翻訳 - ChatGPT
Description from store

Contextly – YouTube 動画でリアルタイムチャット 🎬💬

ほとんどの AI 拡張機能は要約作成に留まります。Contextly はさらに進化し、あらゆる YouTube 動画と直接チャットできます。的確な質問をしたり、特定の瞬間を深く掘り下げたり、リアルタイムで回答を得たりできます。動画コンテンツを完全に理解する AI の力を借りれば、その答えはすぐに見つかります。

新機能:

🗝🗝🗝 Bring Your Own Key (BYOK) — Contextly ユーザーのプライバシーとコントロールを強化

Contextly の新しい Bring Your Own Key (BYOK) 機能により、ユーザーはデータと AI のインタラクションの管理方法を完全に制御できます。BYOK を使用すると、独自の OpenAI API キーを Contextly に直接接続できるため、ツールのインテリジェント機能を最大限に活用しながら、使用状況の完全な所有権と透明性を維持できます。

独自の API キーを使用することで、トークンの使用方法、使用するモデルバージョン、個人の OpenAI アカウントを介したデータの流れをユーザーが決定できます。つまり、インタラクションは Contextly の共有インフラストラクチャを経由することなく、すべてユーザー自身の認証情報に紐付けられます。GPT-5 をリサーチ、ライティング、コーディング、ブレインストーミングなど、どのような用途で使用する場合でも、BYOK によりデータのプライバシーが確保され、柔軟性とワークフローに合わせたエクスペリエンスが維持されます。

設定は簡単です。設定パネルを開き、APIキーを一度貼り付けるだけで、Contextlyが残りの作業をシームレスに処理します。その後は、すべてのレスポンス、サマリー、分析がキーを通じて安全に生成され、速度、信頼性、品質に妥協することはありません。

BYOKは、AIの利用を完全に自律的に制御しながらContextlyのパワーを最大限に引き出したいと考えている専門家、開発者、そしてプライバシーを重視するユーザー向けに設計されています。データもルールもあなたのもの。それがContextlyによって完全にサポートされるようになりました。

BYOKでサポートされるAI:ChatGPT、Gemini、Claude。近日中にさらに多くのベンダーがサポート予定です。

🔹 Contextly を選ぶ理由

すべての動画には洞察が詰まっていますが、必要な答えを見つけるには何時間もかかることがあります。Contextly は YouTube をインタラクティブな学習プラットフォームへと変貌させます。動画を視聴しながら、リアルタイムで質問、説明、探求することができます。

🔹 Contextly の特長

リアルタイムビデオチャット – まるで講師にメッセージを送るように、コンテンツと自然にやり取りできます。

状況に応じた回答 – AI は要約を作成するだけでなく、具体的な質問にも回答します。

柔軟な要約 – 全体像を把握したいときに、短い、中程度、詳細な要約を選択できます。

スマートナビゲーション – ハイライト、チャプター、動画の短縮機能で、よりスピーディーに学習できます。

ビジュアルインサイト – 画像の抽出や動画内の検索が簡単に行えます。

パーソナライズされた視聴 – YouTube をカスタマイズして、集中力と生産性を向上できます。

グローバル展開 – 115 の言語に対応し、真にユニバーサルな学習を実現します。

🔹 Contextly はどんな人向け?

学生、専門家、研究者など、YouTube を視聴しながら、より速く、よりスマートに、そして時間を節約して学びたいと考えているすべての人におすすめです。ただ受動的に視聴するのではなく、コンテンツと対話しながら学習を進めます。

🚀 Contextly は単なる動画要約ツールではありません。
YouTube 動画とリアルタイムでチャットできる初の AI ツールです。
あらゆる動画をインタラクティブな会話に変え、新しい学習方法を切り開きましょう。

👉 Chrome に Contextly を追加して、今すぐ動画に質問をしてみましょう。

Latest reviews

Jean Bravo
Contextly has become my go-to extension for YouTube. As someone who watches a lot of tutorials and lectures, the AI summaries save me so much time. I especially appreciate the Bring Your Own Key option because it lets me use my own OpenAI API while keeping my data private. The chat feature works smoothly right inside the player, and asking questions about long videos feels like having a study buddy on demand. It is not perfect, the interface can feel a bit cluttered at first, but the time it saves makes it totally worth it. Highly recommend for students or anyone who learns from YouTube.
Niamat Ullah
Contextly is a top-tier tool for researchers and students looking to streamline their learning, especially with the "Bring Your Own Key" (BYOK) feature. I love that I can plug in my own OpenAI or Gemini API key because it gives me total ownership and privacy over my data, and it’s way more transparent than other tools. The ability to navigate YouTube content with real-time AI chat and support for over 120 languages makes it an incredibly useful extension for a global audience.
subhan ali
After using Contextly for a few days, I can honestly say it’s a game-changer for YouTube productivity. The AI summaries are spot-on, and being able to search through long videos has saved me hours of watching. It blends perfectly into the player, making it a must-have for any professional or student.
SkillSet Nest
This is one of the tools that I like the most for YouTube. It saves me so much time. The perfect assistant
Orion Ventures
After testing Contextly for a few days, I can confidently say it’s a game-changer for YouTube productivity. The AI summaries are impressively accurate, and the ability to query long videos has saved me hours of manual watching. It integrates seamlessly into the player, making it an essential tool for any professional or student.
Yuval Rokni
I've been using Contextly for a few days now, and it's a great YouTube assistant. The summaries aren't bad at all and the ability to ask questions about long videos saves me so much time. It's very easy to use and integrates perfectly with the player. I highly recommend it to any student or professional to try it out.
Asifur Rahman
Contextly YouTube AI Assistant is a top tier tool for researchers and students looking to streamline their learning by allowing you to bring your own OpenAI API key which grants complete ownership and privacy over your data and AI interactions. The ability to navigate YouTube content easily combined with support for over 115 languages makes it a transparent and incredibly useful extension for a global audience but users should be aware of high subscription costs and reports regarding suspicious review practices.
Chxrlx
Very convenient, especially when we're tasked to watch videos for school. Although the design of the extension needs some changes since it's a bit messy, especially for a new user.
Oyagi Akuma
This helps me bring my own key, enhancing privacy and control for my context. This gives me complete control over how my data and AI interactions are managed. I can also connect to my OpenAI API key directly to continue, allowing me to take full advantage of the tool's intelligent capabilities while maintaining full ownership and transparency over my data usage
Yusuf Abdelfattah
Amazing Really like using it
Sourav Vinodkumar
Contextly has helped me with viewing videos all over the world and helped me get better at understanding spanish. I love it!
Deniz
I have been using Contextly: YouTube AI Assistant for a while when watching YouTube videos and it has been a very good experience for me. This extension is very useful if you are a student, a researcher or anybody who wants to learn something from youtube videos easier than before also the support of 115 languages is really pleasing for any non-english speaking users.
عبدالعليم اسماعيل
This is a great addition that helps translate and summarize videos using artificial intelligence. I hope it will also include an option to export the summary as a Word document or text file.
Lazar Antic
Review Contextly is a practical YouTube AI assistant that saves time by generating summaries, transcripts, and translations within seconds. The interface is clean and user-friendly, and the results are accurate and helpful for quickly understanding video content. It’s especially useful for students, researchers, and anyone who wants to consume YouTube content more efficiently.
Степан Медведев
good extension !
Ken Taylor
Smooth, took me 2 seconds to learnn the ui tho. after that it was like partt of the browser
Gimme Video
Contextly is an excellent YouTube companion that adds real value to video watching. The AI-powered summaries save me so much time on longer videos, and the transcript search feature lets me jump to exactly the part I need. The translation capability is a great bonus for non-English content. It integrates seamlessly into the YouTube interface without feeling cluttered. Very practical tool for students and researchers who consume a lot of video content.
Siim Liimand
ok
Beatrice Melo
Very convenient; the automatic summary dialogue saves me a lot of time, especially for long videos.
David Schulte
Very suspicious extension. The author mails random extension store developers and ask for 5 star reviews. I looked at the source and it is a vibe coded mess. All it does is taking the YouTube generated transcript and chapter overview into a Vercel Api builds a chat bot around it. The code mentioned a expensive subscription service with Standard, Premium and Unlimited models (https://contextlyapp.com/payments). The page is also not working and vibe coded. Again you can do this free in ChatGPT.
Arcus Fargin
If you're a student, researcher, or just hate spoilers, grab this now. 10/10 recommend!
Fargin tech
Contextly has totally transformed how I watch YouTube videos. The AI summaries let me get the key points in seconds without watching hours of content, transcripts are spot-on and searchable, and the translation feature is a lifesaver for non-English videos.
Нурсултан Еменбаев
very usefull app
לירן בלומנברג
Powerful and super practical turns any YouTube video into an interactive AI experience. Summaries, chat, and search all work smoothly right inside YouTube. A must-have for learners and creators!
Shashin Subasingha
I've used various chat AI, but this seems the best, it's actually a very smooth AI Companion. The keyword highlight is also a killer feature, love how it shows visually the words on the timeline!
YT V
This is a brilliant idea and perfectly implemented, works flawlessly. 5 stars without a doubt
Alessandro
This is a fantastic idea and it works perfectly. It adds so much depth to my YouTube watching by providing extra context right on the page. It's seamless, not intrusive at all, and makes videos so much more informative. I can't imagine browsing without it now. A must-have extension!
Elvis
I just installed this and wow, it completely changes how you watch YouTube. I was just watching a documentary, and Contextly popped up with all this extra info and links right when I was getting curious about a topic. It's like it reads your mind! It feels so much more interactive and I'm actually learning more. It's super smooth and doesn't get in the way of the video. If you're a curious person who loves falling down rabbit holes on YouTube, you NEED this extension. It's an absolute game-changer. 5/5, no question!
Arbel Israeli
The best youtube assistant out there :) I totally recommend!
hritik choudhary
watch industry talks and coding tutorials on YouTube. Contextly saves me so much time by breaking things down when I don’t fully understand a part. The real-time chat makes learning way smoother
Alessandro Gironi
Great!