ASK PDF AISend a PDF into the chat and ask about it in plain language: summaries, key ideas, specific answers. The…Send a YouTube lecture, a podcast, an audio file up to three hours or a PDF and get a structured summary back, then ask follow-up questions about it. Three free summaries a day; paid plans from $7 a month or 450 Stars.
Much of what a course asks you to take in is no longer a textbook: it is a two-hour recorded lecture, a YouTube explainer, a podcast episode, a forty-slide deck. This bot turns those into something you can skim. Send a YouTube link (or TikTok, Vimeo, Twitch and other video platforms), an article URL, an audio file up to three hours, a voice message, a photo of a whiteboard, or a PDF, Word, Excel or PowerPoint file, and a structured summary comes back with buttons for details and key points.
After a summary, /chat switches to a conversation about it — what the lecturer said about a particular term, which examples were used — and the bot keeps the context of your recent summaries. In a group, /sum digests the recent discussion, and inline mode summarises a link in any chat.
For studying, treat the summary as a map rather than the lecture: it shows where the important part is, so you can watch or read that part properly. A model summarising a lecture can drop a caveat or mishear a term, so check anything you will quote against the source.
The free plan gives 3 summaries and 10 chat messages a day, reset at midnight UTC; paid plans start at $7 a month or 450 Telegram Stars, and new users get a three-day Premium trial. The privacy policy says submitted content is not stored after processing and summaries are cached for up to 24 hours.
/chatTalk to the AI about your recent summaries or anything else/sumSummarise recent messages in a group/supportContact the developers, including data deletion requestsFreemium 3 summaries and 10 chat messages a day
| Criterion | Weight | Points | |
|---|---|---|---|
| Functionality | 25 | 8 / 10 | |
| Reliability & speed | 15 | 6 / 10 | |
| Popularity & trust | 15 | 3 / 10 | |
| Price & free tier | 10 | 7 / 10 | |
| Usability | 10 | 8 / 10 | |
| Safety & privacy | 10 | 6 / 10 | |
| Freshness | 5 | 6 / 10 | |
| Localization | 5 | 10 / 10 | |
| No intrusive ads | 5 | 7 / 10 | |
| Score | 100 | 65.5 |
Yes. It takes audio files up to three hours (MP3, M4A), video links from YouTube and other platforms, and voice messages, which it transcribes before summarising.
The bot detects the language of the content and replies in it. The site lists English, Spanish, French, German, Portuguese, Italian, Chinese, Japanese, Korean and Arabic among its 12+ supported languages.
According to its privacy policy, no. Content is processed in real time and not stored, summaries are cached for up to 24 hours, and you can ask for deletion of your account data via /support.