Sidenote

Input—per 1M tokens

Output—per 1M tokens

Context—tokens

WeightsClosed

About

Sidenote is ranked #6 of 34 in AI summarizers on Inferse. It runs on Browser extension, Web. There is a free plan. A free trial is offered. Paid plans start at £1.20/mo.

Compared on AI summarizers

Free plan: Yesgetsidenote.app
Document upload: Yesgetsidenote.app
Webpage summaries: Yesgetsidenote.app
Transcript summaries: Yesgetsidenote.app
Summary length control: shortgetsidenote.app
Export formats: markdowngetsidenote.app

Facts

What it does: Sidenote is an AI reading assistant that answers questions about documents in the browser and shows where each answer came from.getsidenote.app · 29 Sept 2026
Cited answers: Answers cite source passages, and clicking a citation scrolls to and highlights the passage in the page.getsidenote.app · 29 Sept 2026
Document tools: Features include summaries, explanations, glossaries, multi-document collections, document search, notes, highlights, tags, and starred documents.getsidenote.app · 29 Sept 2026
File support: Sidenote reads browser-rendered PDFs, including scanned PDFs with OCR, and accepts PDF, DOCX, PPTX, TXT, MD, MDX, and RTF uploads.getsidenote.app · 29 Sept 2026
Integrations: Dedicated integrations include Confluence, Notion, Google Docs, Slack canvases, SharePoint, and OneDrive.getsidenote.app · 29 Sept 2026
Browser availability: The site lists Chrome, Edge, and Firefox extensions, with Opera described as coming soon.getsidenote.app · 29 Sept 2026
Trial: The 7-day Pro trial requires no card and has limits including 10 documents, 20 summaries, and 10 chat turns.getsidenote.app · 29 Sept 2026
Privacy: The maker says user content is never used to train AI models and its AI providers use no-training defaults on the API tiers used.getsidenote.app · 29 Sept 2026
Data residency: Documents are stored in Supabase in the UK eu-west-2 London region, encrypted at rest and isolated per account with row-level security.getsidenote.app · 29 Sept 2026
Retention: Users can choose Store retention while the account is open or Discard, which purges a document within 24 hours; users can also delete library documents at any time.getsidenote.app · 29 Sept 2026
Compliance limit: Sidenote says it is not yet SOC 2 certified and that formal attestation is on its roadmap.getsidenote.app · 29 Sept 2026
Who it is for: The maker describes use cases for engineering, product, customer success, legal and operations, and research teams.getsidenote.app · 29 Sept 2026
Support: The maker lists support by email at [email protected] and says it is supported by its solo developer, Lewis Hadden.getsidenote.app · 29 Sept 2026