Sidenote vs Wiseone

If what you want from a reading copilot is trust - an answer you can check against the exact sentence it came from - yes. Sidenote builds a retrieval index over the documents you open, validates every answer server-side against the retrieved passages, and scrolls the document to the cited sentence when you click a citation. Wiseone's strength runs the other way: enriching an article with context from across the web.

Wiseone is built around exploring OUTWARD from the page: cross-checking a claim against other sources on the web, surfacing related coverage, and simplifying concepts as you read. Sidenote deliberately stays INSIDE your sources - it answers from the documents and wikis you open, so every claim can carry a verifiable citation to a passage you can see.

Sidenote. It reads Confluence, Notion, SharePoint & OneDrive, Google Docs and Drive files, Gmail and Outlook attachments, and Slack canvases through your own signed-in session, keeps a library with cross-document collections, and cites the exact passage behind every answer. Wiseone is aimed at reading the open web - news, articles and public pages.

For pure article reading, they overlap: both summarize and answer questions about the page. Wiseone adds web-wide exploration (related coverage, cross-checks against other outlets); Sidenote adds verified citations, notes and highlights, a glossary, and a library the article joins for later cross-document questions.

Wiseone points to sources when it cross-checks and explores, which is genuinely useful for the open web. Sidenote's citations are a different mechanism: every answer is checked server-side against passages retrieved from YOUR document, unsupported claims are dropped, and clicking a citation scrolls to the exact sentence. Narrower in scope, stricter in verification.

Both have a free tier and a paid plan at a similar price point (Sidenote Pro is £10/month, with an opt-in 7-day trial that needs no card). Sidenote's higher tiers add a stronger chat model, bigger caps, and Confluence space indexing.

Sure. Some people use Wiseone to explore and fact-check the open web, and Sidenote when the reading is a document they need reliable, checkable answers from - a contract, a paper, a wiki.