AI summaries
Plain-language explanations of any section — from abstract to appendix — grounded in the exact passage they came from.
Folio reads the PDF, builds the AI summary, and links citations automatically.
Folio sits beside every paper you read — explaining dense sections in plain language, keeping your citations honest, and turning highlights into a connected library of notes.
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One quiet workspace for the whole reading loop — understand, verify, remember.
Plain-language explanations of any section — from abstract to appendix — grounded in the exact passage they came from.
Every claim links back to its source. Copy clean APA in one click, or export your whole bibliography as BibTeX.
Highlights become linked notes that stay attached to their paper — searchable, taggable, and ready for your next draft.
Start free with three papers and unlimited curiosity — upgrade only when your library outgrows it.
You’re looking at the Transformer’s encoder–decoder. The left stack reads the whole input sentence at once: self-attention lets every word weigh every other word, so context never gets squeezed through a single memory the way it does in an RNN.
The right stack writes the output one token at a time, attending both to what it has written so far and to the encoder’s reading of the input (the dashed line). With no recurrence anywhere, training parallelizes across the entire sequence — the key reason Transformers train dramatically faster.