ask a question and get an instant answer.

The Problem:

I built it mainly for myself: I often watch long-form videos like lectures or tutorials on YouTube, and I want a fast way to extract the information I need without scrubbing through timestamps or rewatching sections. For example, I recently used it with a 3.5-hour lecture and got the exact answers to my questions in seconds.

Another example is that nowadays YouTubers often create videos around one or two key ideas, and I can now figure out whether a video is worth watching by asking what those key ideas are in advance.

How it works:

1. The extension gets the video transcript. 2. An AI model summarises it, and makes the content ready for chat 3. You can switch between chat mode and auto-generated summaries depending on how deep you want to go.

What’s different:

1. It’s not just a summarizer: you can interact with the content in real time and ask follow-up questions 2. It saves a huge amount of time if you’re studying or just watching a long video and curious about a specific part of it.

Feedback: If you find it useful, I’d really appreciate your feedback on your experience with it and what you’d improve.

Thanks!18:T443,Hi HN!

I’m Yanjun, co-founder of Lessie AI.

We built Lessie AI as a People Search AI Agent — designed to help you find anyone in seconds: - Influencers for campaigns - Partners for collaborations - Experts for insights - Founders or investors to connect with

Instead of spending hours doing LinkedIn / Google searches, Lessie automates the whole workflow: - Understand your request — type what you need, any role or profile - Search across multiple data sources — trying different strategies to find the right people - AI review + scoring — profiles are automatically filtered and ranked so you see the most relevant first - Generate outreach in seconds — on-brand, personalized, ready to send

We’re currently in early access — looking for feedback from the HN community.

Would love to hear: - Wha

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