SynthIt vs Eightify

SynthIt vs Eightify compared for summarizing YouTube videos. Eightify is fast and cheap for a quick summary; see what it takes to turn that video into something you study.

	SynthIt	Eightify
Paid plan	$19/mo (one Pro plan)	~$5–10/mo Pro (unlimited summaries)
Built for	A full learning workspace — many source types, not just YouTube	Fast YouTube video summaries, browser-extension first
Flashcards, quizzes, spaced repetition	Built in, from the same video	Not offered
Other source types	PDF, Office files, EPUB, images, web pages, audio, video	YouTube only
Ask questions about the video	Yes, cited to the exact timestamp	Not offered

Eightify figures are from third-party pricing coverage as of September 2026 and may be out of date — check eightify.app/pricing before you buy.

Why people choose SynthIt

One tool for every source, not just YouTube

Eightify is quick for a YouTube-only summary. SynthIt handles the same videos plus PDFs, lectures, articles, and recordings, all in one library.

Study Kit, not just a summary

A summary tells you what a video said. SynthIt also turns it into flashcards and a quiz, so you can check whether you actually learned it.

Timestamped citations you can click

Every key point links to the exact second it happens in the video — the summary isn't just text, it's a way back into the source.

Other comparisons

vs NoteGPT vs NotebookLM vs ChatGPT vs Quizlet vs Knowt vs Otter.ai vs Glasp

Try it on your own file — free

No card required. Your first summary takes about a minute.

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