Eightify

What it does

Eightify is a Chrome extension that summarizes YouTube videos with AI. You open a video in the browser, click the Eightify button, and receive a written summary, key insights, timestamped navigation points, an overview of top comments, and a generated transcript. The listing says it handles videos of any length, up to 10 hours, and supports summaries and translations in 40+ languages.

Viewers use it to skim long podcasts, interviews, news, tutorials, and business or science videos before deciding whether to watch in full. Key insights can be customized by focus (insightful, actionable, controversial, funny), format (list or Q&A), length, and grouping. The Chrome listing describes the product as powered by Claude and ChatGPT, while the Mac App Store listing for the separate Safari app describes it as powered by the OpenAI ChatGPT API.

It suits students, researchers, and general viewers who regularly watch long informational videos. The Chrome extension is offered with a 7-day free trial with no charge until the trial ends, and the Safari app for Mac lists Eightify Pro in-app purchases. A subscription price for the Chrome extension is not stated on its listing, so confirm current pricing on the official site before subscribing.

What it can do

• Generates summaries of YouTube videos up to 10 hours long
• Extracts key insights with selectable focus, format, and length
• Provides timestamped navigation to jump to important parts
• Summarizes and translates in 40+ languages
• Summarizes top comments to show viewer sentiment
• Generates a transcript from video captions

Before you choose

• The Chrome extension's post-trial price is not stated on its listing; the separate Safari app lists Eightify Pro at $4.99 monthly or $49.99 annually.
• One App Store reviewer reported the summary button did not respond, and the listing does not provide detailed troubleshooting instructions.
• The Chrome and Mac App Store listings name different underlying models (Claude and ChatGPT versus OpenAI ChatGPT API), so verify the current model before relying on it.

Listed under

• Productivity

Get started

Install the Chrome extension, open a YouTube video, and click the Eightify button.

1. Install the Eightify Chrome extension from the Chrome Web Store.
2. Open any YouTube video.
3. Click the Eightify button to receive the summary and insights.

The Chrome listing states a 7-day free trial and that users can cancel anytime. The Mac App Store lists in-app purchases for the separate Safari app at Eightify Pro $4.99 monthly and $49.99 annually; the Chrome extension subscription price should be verified on the official site.

We couldn’t find published prices for Eightify. See their pricing page ↗

7-day free trial.

Sources for this overview

Product pages, documentation, and pricing checked 29 Oct 2026. Each source supports part of the overview; availability and prices can change.

• Eightify: AI YouTube Summarizer - Chrome Web Store ↗chromewebstore.google.com
• ‎Eightify for Safari App - App Store ↗apps.apple.com

Company website

eightify.app: product, pricing and policy pages

Web archive

When the site first appeared

YC directory mirror

Batch and company name

Social accounts

Accounts the company links, and its posts on X

Human review

Checked by a person

knowledge_base

manual_review

Last checked 29 Oct 2026. Every field keeps its source and date; unknown means we couldn’t confirm it.