Comparison
Sidenote vs Notion AI
Both answer questions about your documents. The difference is scope. Notion AI lives inside your Notion workspace and is brilliant at writing there. Sidenote is a browser extension that reads your Notion pages plusPDFs, Google Docs, Confluence and any web page — and cites the exact passage. Here's an honest, feature-by-feature comparison.
The short answer
Should you use Sidenote or Notion AI?
Plenty of people run both: Notion AI inside the workspace, Sidenote for everything they read across the browser.
Compared honestly
Sidenote vs Notion AI: feature by feature
CapabilitySidenoteNotion AI
Reads your Notion pages (read-only)SidenoteYesNotion AIYes
Reads PDFs, Google Docs, Confluence & SharePointSidenoteYesNotion AINo
Reads any web article or live web pageSidenoteYesNotion AINo
Citations scroll & highlight the exact passageSidenoteYesNotion AIPartial
Server-side citation check drops unsupported claimsSidenoteYesNotion AINo
One-click glossary of jargon & acronymsSidenoteYesNotion AINo
Ask across many documents at onceSidenoteYesNotion AIPartial
Works in any tab without leaving the pageSidenoteYesNotion AINo
Generates & edits content inside the documentSidenoteNoNotion AIYes
Autofills database properties & runs workspace agentsSidenoteNoNotion AIYes
Q&A grounded in your whole Notion workspaceSidenotePartialNotion AIYes
Three rows go to Notion AI, and we're not pretending otherwise — see Where Notion AI wins below. The cross-document row is powered by Sidenote Collections, and every answer is backed by click-to-scroll citations.
The core difference
AI inside one workspace, or a reader across everything you open.
Notion AI is part of Notion. It knows your Notion pages and databases intimately and helps you write, summarise and query them without leaving the app. Within that world it's excellent — but its world is Notion.
Sidenote sits in the side panel of every tab. It reads what you already have open — a Notion page, a PDF, a Google Doc, a Confluence runbook, an article — and answers in place. Click a citation and it scrolls the real document and highlights the exact passage.
The difference in one exampleYou're cross-checking a Notion spec against a supplier's PDF and a vendor web page. Notion AI can reason over the Notion spec — but the PDF and the web page aren't in your workspace, so they're invisible to it. Sidenote reads all three where they live and cites the exact line in each.
Giving credit
Where Notion AI is the better tool.
If these are what you need, Notion AI is the stronger choice — and Sidenote, a read-only reader, deliberately doesn't try to do them:
- Writing & editing inside the pageDrafting, rewriting, translating and summarising directly into your Notion documents. Sidenote reads and cites; it doesn't write back into your docs.
- Autofill & workspace agentsAuto-filling database properties and running multi-step agents that update pages and query databases — deeply integrated work Sidenote doesn't do.
- Q&A across your whole Notion workspaceAsking a question and having Notion search every page in your workspace at once. Sidenote answers across the documents you've opened, not your entire Notion graph.
FAQ
Sidenote vs Notion AI — common questions
Is Sidenote a good Notion AI alternative?
It depends what you want it for. Notion AI is brilliant at writing and generating content inside Notion, and at answering questions across your Notion workspace. Sidenote isn't trying to replace that. Where it wins is breadth and proof: it reads your Notion pages plus PDFs, Google Docs, Confluence, SharePoint and any web page, and every answer cites the exact passage with click-to-scroll. If your reading lives in more than just Notion, Sidenote is the better fit alongside it.
Can Notion AI read PDFs or web pages outside Notion?
Not natively. Notion AI works inside your Notion workspace — the pages, databases and docs you keep there. A PDF you have open in your browser, a Confluence runbook or a web article isn't part of that workspace, so Notion AI can't answer questions about it. Sidenote runs in your browser on your own session and reads whatever you have open, Notion included.
Does Sidenote work on my Notion pages?
Yes, read-only. Open a Notion page and Sidenote reads what's on screen and answers in place, with citations that scroll to the exact line. It doesn't write into your Notion or change anything — it reads and cites. For editing and generating content inside Notion, Notion AI is the right tool.
Which is more trustworthy for answers?
Both cite sources. Sidenote adds two things: every answer is checked server-side against the passages actually retrieved, so a claim the source doesn't support has its citation dropped before you see it; and clicking a citation scrolls the document to the exact sentence and highlights it. Notion AI links to the pages it used, but verifying is more of a manual hunt.
Can I use both Sidenote and Notion AI?
That's a common setup. Keep Notion AI for drafting, summarising and querying inside your Notion workspace, and use Sidenote for everything you read across the browser — PDFs, papers, wikis, articles and your Notion pages — when you want answers in place with a citation you can click to verify.
How does pricing compare?
Notion AI is billed as part of Notion: full AI is bundled into Notion's paid Business and Enterprise plans (Notion's pricing changes over time, so check their site for current figures). Sidenote is a standalone browser extension with a free tier forever, a 7-day Pro trial that needs no card, and paid plans from £10/month.
Try it on the page you're on
Read anything. With citations.
Add Sidenote to Chrome and ask the document in front of you a question — Notion page, PDF or web article. No upload, no new tab — just the answer, and the passage that proves it.
7-day Pro trial · No card required · Free tier forever