Is Lumiexi completely free?

Yes. Summaries are free — no sign-up, no premium tiers, no hidden costs. During heavy traffic, capacity is shared; if it's ever saturated, you can add your own API key in one click — free tiers (Google Gemini, OpenRouter, Groq) and paid keys (OpenAI, Claude, DeepSeek, xAI) both work — and keep summarizing right away.

Can I use my own OpenAI, Gemini, or Claude API key?

Yes. If the shared AI is ever busy, add your own API key and your summary runs on it instantly. Keys from OpenAI, Google Gemini, Anthropic Claude, OpenRouter, DeepSeek, Groq, and xAI all work — free-tier or paid. Your key stays in your browser and is never sent anywhere except the AI provider you chose.

Do I need to create an account or install anything?

No. Lumiexi works entirely in your browser. No account, no email, no Chrome extension, no app download. Just paste a YouTube URL with its transcript and get your summary instantly.

How do I summarize a YouTube video?

Open the YouTube video, click '...' below the player, then 'Show transcript'. Copy the transcript, then paste it into Lumiexi along with the video URL. Click Summarize and you'll get an AI summary with key points in seconds.

Can I summarize long YouTube videos?

Yes. Lumiexi handles videos of any length — from 2-minute Shorts to 3-hour lectures and podcasts. The AI processes the full transcript and condenses it into a clear summary regardless of video length.

How is Lumiexi different from other YouTube summarizers?

Most tools just give you generic text. Lumiexi gives you 4 purpose-built formats (study notes, Twitter threads, action items), a shareable link you can send to anyone, and export to Markdown. No sign-up, no extension required.

Is my data stored or tracked?

Summaries are stored with a shareable link so you can share them. We don't track you, store your IP, or require any personal data. Your transcript is processed by AI and only the summary is saved — never the original transcript.

What summary formats are available?

Lumiexi offers 4 formats: Quick Summary (paragraph + key points), Study Notes (structured with terms and quotes), Twitter/X Thread (viral 6-10 tweet thread), and Action Items (step-by-step guide for tutorials).

What types of YouTube videos can I summarize?

Any video with captions or subtitles — tutorials, lectures, podcasts, interviews, documentaries, webinars, product reviews, and more. Works with any language, not just English.

Why do I see a loading delay sometimes?

The time depends on the video transcript length and AI processing. Most videos summarize in 5-15 seconds. Longer videos with large transcripts may take slightly longer.

About

Every YouTube video, readable in minutes.

Lumiexi is a free AI summarizer for YouTube. Paste a video link and get a Quick Summary, Study Notes, a Twitter/X Thread, or Action Items — no account, no install, no cost.

Why we built Lumiexi

Most of the knowledge people need right now is locked inside video. Tutorials, lectures, podcasts, reviews, keynotes — hours of content where the part you actually need is a few minutes, buried somewhere in the timeline. Rewinding, scrubbing, and rewatching to find it is slow, and taking notes while a video plays is slower.

And here's the thing: every YouTube video already comes with a full transcript. The information isn't hidden. It's just raw — unstructured, unformatted, and unreadable at any real volume.

Lumiexi was built to close that gap. Paste a link, and the transcript is cleaned up, structured, and reshaped into the format you need — so a forty-minute video becomes two minutes of reading you can act on, save, or share.

What Lumiexi does

One video in, four ready-to-use formats out. You choose the one that fits the job.

Quick Summary

The gist of the video, cleanly structured and readable in a couple of minutes. For deciding fast whether the full watch is worth your time.

Study Notes

Lecture- and tutorial-ready notes organized for revision — definitions, key points, and structure you can actually study from.

Twitter/X Thread

The video's strongest points reshaped into a ready-to-post thread. Share what you learned without writing it yourself.

Action Items

Concrete, numbered steps extracted from the video. For walkthroughs, how-tos, and anything you need to execute, not just understand.

Guides and coverage

Alongside the tool, we publish practical guides on study workflows, productivity, and getting more out of video content — and The Lumiexi Gaming Hub brings you straight to the point on the biggest game launches. Instead of watching 40-minute trailer breakdowns and news recaps, we condense GTA 6 coverage into minutes of reading. It's the exact same principle as our summarizer: no fluff, just the facts you need.

Contact

Questions, feedback, or partnership inquiries? Get in touch with the Lumiexi team.

Get in touch