SynthIt vs Knowt

SynthIt vs Knowt compared on price, source types, and citations. Both turn a source into flashcards and quizzes — see what's different underneath.

	SynthIt	Knowt
Paid plan	$19/mo (one Pro plan)	~$12.49/mo Ultra (billed annually), $24.99/mo monthly
Free plan	5 items, no card	Generous free tier — unlimited flashcards and study modes, capped AI generations
Source types	PDF, Office files, EPUB, images, web pages, YouTube, audio, video	Notes, PDFs, and existing Quizlet sets — no native video/audio ingestion
Citations back to a page or timestamp	Every claim, card, and quiz question cited	Not a structured feature
Cross-source chat	Ask across every source you've added	Kai AI chat is scoped to one set of notes at a time

Knowt figures are from third-party pricing coverage as of September 2026 and may be out of date — check knowt.com/pricing before you buy.

Why people choose SynthIt

Citations as the default, not an extra

Knowt's AI generation is genuinely useful, but nothing traces a card back to the exact passage it came from. SynthIt cites every flashcard and quiz question to a page, slide, or timestamp by default.

Video and audio as first-class sources

A recorded lecture or a YouTube video goes straight into SynthIt with a timestamped summary and cited cards — not just notes and PDFs.

A library that connects across sources

SynthIt's chat and search work across everything you've added, not one document or note set at a time.

Other comparisons

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

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