AI note-taking app pricing in 2026, and the cheapest way to chat with your notes

If you're comparing the best AI note-taking apps on pricing in 2026, the bigger difference is usually what you pay for the AI each year, more than what the AI can do. Notion Plus costs US$120 a year per member, and its full AI (Notion Agent, AI Meeting Notes and Enterprise Search) comes with Business at US$240 a year. Capacities puts its AI on Pro at US$119.88 a year. Obsidian is free, and its AI comes from community plugins such as Copilot for Obsidian. All of these prices come from each company's own pricing page as of September 2026.

If all you want is to ask questions of notes you already have, you rarely need any of those plans. The cheapest setup is usually a free notes app connected to an AI account you pay per use, with a spending cap, and students can get by on very little this way. Below you'll find the verified prices side by side, what each free tier leaves out, and a step-by-step walkthrough of the cheap setup.

How the best AI note-taking apps compare on pricing in 2026

Pricing for the best AI note-taking apps in 2026 is in the table below, limited to prices we could confirm on an official page as of September 2026. Yearly cost is the yearly-billed monthly price times twelve, for one person.

The all-in-one plans cost roughly US$120 to US$240 a year per person before you write a single prompt. Teams pay more, because Notion charges per member: five people on Business pay US$1,200 a year. If you want to see the total for your own stack, the subscription cost calculator will add it up.

What do the free tiers leave out?

Most students and solo users start on a free plan, so the limits there matter more than the list price.

• Notion Free is generous for one person, but its pricing page says it limits blocks once two or more members share a workspace, caps uploads at 5 MB and keeps 7 days of page history. AI is a trial.
• Capacities Basic is free, with its AI held back for Pro.
• Obsidian is the full app for free. AI depends on which community plugin you install, each with its own setup and terms.
• Barside is the full app for free, with no note or workspace limit and no account. It has no AI of its own, so chat with your notes needs an AI account you connect.

A free tier without AI can still be the cheapest route, as long as the app lets you bring your own AI. Most of what follows builds on that.

What do Mem, Reflect, Copilot for Obsidian, NotebookLM and ChatGPT cost?

All-in-one AI notes app pricing for Mem, Notion AI, Reflect and Capacities in 2026 is what most comparison searches are after, and we could pin down two of those four in the table above. For Mem and Reflect, we couldn't confirm current plans on an official pricing page at the time of writing, so we've left their numbers out rather than guess. Check each company's own pricing page and note the date you read it.

Copilot for Obsidian pricing is set by the plugin's own developer. It's one of the Obsidian community plugins, and its home is Copilot for Obsidian on GitHub, where you can read what it offers and what it costs today. Obsidian itself stays free either way.

For students weighing NotebookLM and ChatGPT for AI chat with their notes in 2026, the two tools work in different ways. Google NotebookLM is built around adding sources and asking questions about them, which suits a course reader or a stack of papers. ChatGPT has a free tier and paid plans listed on its pricing page. Both are strong at answering questions, and both work best when you paste or upload what you want them to read. If you already pay for ChatGPT Plus or Claude Pro, Barside can use that plan too: My plan in Settings → AI runs Codex or Claude Code on your computer, signed in with your account.

What's the cheapest way for a student to chat with their notes?

The cheapest way for a student to chat with their notes using AI and free tools is a free notes app plus an AI account billed per use, capped at a small amount. You pay only for the questions you ask, and nothing in the months you're on break.

Three setups cover most students:

1. No AI at all. Barside's search bar (Alt+Shift+Space) finds notes by title and text, from any app, for free. For many weeks of a term, that's enough.
2. Free app, your own AI key. Barside connects to Claude, ChatGPT, Gemini or OpenRouter and asks the AI to answer only from passages in your notes, with numbered sources. A short question costs little, and a spending limit stops surprises.
3. The AI app you already use. If you live in Claude Desktop or ChatGPT, AI connections let that app search and read the Barside workspaces you choose, read-only by default.

Priya, a nursing student, keeps lecture notes in a Cornell notes template and her deadlines in a study planner. Before an exam she asks "What did the lecture say about fluid balance?" and gets two cited passages from her own notes. Tom, a history undergraduate, transcribes an online seminar with call transcription on his computer, then asks what was said about a reading, and the excerpt shows the timestamped line.

How do I chat with my notes in Barside?

Barside is a free desktop app for Windows, Linux and Mac. Its AI search lives in Library & briefing.

1. Download Barside and open it.
2. Bring your notes in: open Settings & backups, choose Import next to Import notes, and pick Obsidian, Notion, Evernote or files. You see a preview first. The import guide covers each source.
3. Open Settings → AI and connect Claude, ChatGPT, Gemini or OpenRouter. For the first three, Barside opens the company's key page; copy a new key and Barside picks it up from the clipboard. OpenRouter is a one-click sign-in.
4. Under AI spending limit, turn on Limit what Barside's AI spends and choose a daily, weekly or monthly amount.
5. Open Library & briefing, stay on the Ask library tab, type your question in Ask your entire library (up to 2,000 characters) and press Ask library.
6. Read the answer under From your library, and click a source's title to open the note.

The search step runs on your computer and keeps the six best passages, with at most two from any one note. Only those passages and your question go to your AI. Because search matches words rather than meaning, phrase your question with the words your notes use, such as a name, a module code spelled out, or a topic. For a back-and-forth chat, open the AI assistant with Ctrl+Shift+A; it can search your library as one of its tools.

Where do my notes go when I ask a question?

Your library stays in Barside's data folder on your computer. When you ask something, your question and the matching excerpts go to the AI company you connected, and that company's data policy applies. Barside does not train any model on your notes.

To keep something out of answers, go to the Sources tab and, under Choose included workspaces & notes, untick a workspace or a single note. Exclude anything sensitive, such as a pasted recovery code, before you start asking, because excluding it later can't recall an excerpt that has already been sent. For more detail, read how AI search uses your data and the AI you connect.

How Barside compares with Notion, Capacities, Obsidian and NotebookLM

Notion is the stronger pick when a team shares one workspace with databases, and its Business plan bundles AI meeting notes and agents. Capacities suits people who think in object types. Obsidian keeps every note as a Markdown file and has a huge plugin library, while NotebookLM is a focused tool for questioning a set of sources. Each does its job well.

Barside makes a narrower case for itself: it's free and local-first, every answer cites the notes it used, and your AI bill tracks what you ask. It also has clear limits. There's no phone app and no database views, and AI search reads six passages per question, so broad questions like "summarize my whole year" work poorly. You can compare more in the best second brain apps, the best note-taking apps and the Obsidian alternative guide.

What works well with AI search

AI search gets better the more you give it. Saved articles, transcripts and bookmarks with their page text all become passages it can cite.