Best AI Note-Taking Apps 2026: Notion, Mem, Obsidian

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This is an editorial research buyer’s guide based on official documentation, pricing pages and the sources listed below — how we review. Prices and plans change often; confirm on the vendor’s site.

Status update: Google renamed NotebookLM to Gemini Notebook on July 16, 2026. Mem has repositioned as an 'AI chief of staff' (Mem Workspace plus Mem Agent) with monthly note caps on every plan.

“AI note-taking app” now covers very different products: team wikis with agents built in, local Markdown vaults where you bring your own model, AI-first apps that turn notes into reminders, and research notebooks that only answer from the sources you upload. This roundup covers apps for personal and team knowledge: the notes, specs, research and reference material developers and small teams build up over time.

It does not cover meeting recorders that join calls and produce transcripts. If that is what you need, see our comparison of Otter, Fireflies and Fathom. For the rest of the AI tool stack around your notes, start with our overview of AI productivity tools for tech teams.

This is an editorial research roundup based on each vendor’s pricing pages, help documentation, release notes and privacy terms, checked on October 17, 2026. We did not run our own benchmarks or timed tests, and we do not score or rank the apps.

Quick picks

Notion: best for team wikis and specs where an AI agent should search and edit shared docs.
Obsidian: best for developers who want local Markdown files and full control over which AI, if any, touches them.
Mem: best for individuals who want an AI agent that turns captured notes into tasks and follow-ups.
Capacities: best for structured personal knowledge bases at a modest price.
Gemini Notebook (formerly NotebookLM): best for source-grounded research over documents you upload.
Evernote: best for long-time Evernote users who want web clipping, scanning and AI search in a familiar app.

How we chose

We looked at apps whose main job is storing and working with notes and knowledge, not recording meetings or managing projects. For each one we checked the vendor’s own documentation for:

What the AI actually does: search and Q&A over your notes, writing help, agents, or connections to outside assistants through MCP.
Where your data lives and how AI providers handle it, including training and retention terms.
Portability: export formats and whether notes are plain files.
Team versus individual focus, and admin features.
Current pricing, including billing basis and which tier unlocks AI.

This is desk research, not lab testing. We did not measure answer quality or speed, and the order of the picks is not a ranking.

The picks

Notion

What it is: a connected workspace for docs, wikis and databases. Notion AI is built in, including Notion Agent, which can create and edit pages and databases, Enterprise Search across connected apps such as Slack, GitHub and Google Drive, AI Meeting Notes and Research Mode. In October 2026 Notion added MCP connections to more than 150 tools and admin controls for external AI agents that read the workspace.

Best for: teams that already keep specs, runbooks and decisions in Notion and want AI that answers from them while respecting page permissions.

Notable limits: real AI use requires the Business plan. Free and Plus get only a limited number of complimentary AI responses. Usage is metered over six-hour and monthly windows, and Custom Agents and premium models spend Notion credits ($10 per 1,000 monthly credits). Notion says customer data is not used for training by default, and that AI providers keep data for 30 days on non-Enterprise plans.

Starting price with AI: Business at $20 per member per month billed annually, or $24 monthly. Our Notion AI review covers the allowance and credits in detail. Visit Notion

Obsidian

What it is: a free note-taking app that stores notes as local Markdown files in a “vault” on your device. Obsidian says its apps collect no telemetry and that your data is “stored locally on your device, making it inaccessible to us.” There is no built-in AI assistant. AI comes from community plugins, which you configure with your own API keys or local models. Obsidian’s official Web Clipper includes “Interpreter”, which can summarise or extract page content using providers such as Anthropic, OpenAI, Google Gemini or a local Ollama model. Most providers need your own API key. A CLI lets scripts and agentic coding tools read and write your vault.

Best for: developers who want plain files, Git-friendly notes and full control over whether, and which, AI sees their notes.

Notable limits: AI quality and data handling depend on the plugin and provider you choose, and plugins are third-party code. There is no shared-workspace admin layer comparable to Notion. Collaboration runs through shared vaults on Obsidian Sync.

Price: the app is free, including for commercial use, though Obsidian encourages a $50 per user per year commercial license. Sync costs $4 per user per month billed annually or $5 monthly, with end-to-end encryption. Publish costs $8 per site per month billed annually or $10 monthly. AI API costs from your provider are separate. Visit Obsidian

Mem

What it is: an AI-first notes app now positioned as “your AI chief of staff”. Mem combines Mem Workspace, where notes, meeting captures and web clips live, with Mem Agent. Mem Agent reviews what you save, tracks tasks and projects it detects, and checks in when something needs attention. Features include Push-to-Remember voice capture on Mac and Windows, Voice Mode for meetings without a bot, a web clipper, calendar integration and a Claude connector.

Best for: founders, consultants and managers who capture a lot of loose information and want an agent to turn it into follow-ups, rather than organising notes by hand.

Notable limits: every plan caps activity per month. Free allows 25 new notes and 25 messages to Mem, Plus allows 50, and Pro 100. Connections and custom routines start at Pro. Mem says data is encrypted at rest and in transit but “not end-to-end encrypted because Mem needs to process your knowledge.” Its privacy policy says your notes are not used to train generalised AI models. Mem is built for individuals. Its pricing page lists no team plan.

Price: Free; Plus $9 per month; Pro $29 per month; larger Pro tiers at $49, $99, $149 and $199 per month; and $50 monthly Extra Usage units on the top tier. Exports are available as Markdown. Visit Mem

Capacities

What it is: a note app built around “objects” (people, books, projects, meetings and custom types) linked in a graph, with daily notes and backlinks. The free Basic plan is the full note-taking app. Pro adds an AI assistant, AI chat, image, PDF and weblink analysis, smart queries, task management, calendar integration, a public API and AI chat connectors for ChatGPT, Claude and Cursor.

Best for: individuals building a structured personal knowledge base who want AI help without enterprise pricing.

Notable limits: Capacities says it is “designed for individuals” and offers no team or organisation plans. Pro includes only a “light monthly budget” of AI. Regular AI use needs the Plus power-up, and top-ups require Plus.

Price: Basic is free. Pro is $9.99 per month billed yearly or $11.99 billed monthly. Believer, which adds early access, starts at $12.49 per month. The Plus AI power-up costs $8.33 per month billed annually. Prices are in USD, and VAT is handled at checkout by Paddle, Capacities’ reseller. Visit Capacities

Gemini Notebook (formerly NotebookLM)

What it is: Google’s research notebook. You add sources such as documents, PDFs and web pages, and the AI answers questions, writes summaries and generates Audio Overviews grounded in those sources. Google renamed NotebookLM to Gemini Notebook on July 16, 2026, describing it as “the same standalone product”. Notebooks now sync with the Gemini app, and Google is adding a secure cloud computer that can run code over your sources. That feature launched for Google AI Ultra and some Workspace business customers and is rolling out to Pro users.

Best for: reading and synthesising a defined set of documents, such as specs, papers or vendor docs, rather than keeping a long-term personal note archive.

Notable limits: it is a research tool more than a general notes app, so capturing and organising everyday notes is not its strength. On personal Google accounts, chats with notebooks follow your Gemini Keep Activity setting and may be read by human reviewers. Google says files added as sources “are not used directly for training”. With a qualifying Workspace edition, Google says prompts and responses are not retained after the session ends. Google’s Workspace privacy hub also says Gemini Notebook does not yet support ISO, SOC or FedRAMP compliance and is not covered by Google’s HIPAA BAA.

Price: included free with a Google Account. Google AI Plus ($4.99 per month) and Google AI Pro ($19.99 per month, with 5x more Audio Overviews and notebooks) raise limits. These are US prices. Visit Gemini Notebook

Evernote

What it is: the long-running note app, with web clipping, document scanning, tasks, calendar and advanced search. Its current plan comparison lists an AI Assistant for searching and organising notes from a chat, Semantic Search, AI Transcribe, AI Edit and the ability to “use your notes from Claude, ChatGPT, and any MCP-compatible AI tool”.

Best for: existing Evernote users with large archives of clipped and scanned material who want AI search on top.

Notable limits: the Free plan is tight, at 50 notes, 1 notebook and 1 synced device. Starter caps you at 1,000 notes and 3 devices. Evernote moved individual users from its old Personal and Professional plans to Starter and Advanced, and its help center’s April 2026 FAQ still described Semantic Search and the AI Assistant as “coming soon”. In a July 2026 thread on the TidBITS Talk forum, several long-time users called the new prices too steep for their use, and some said they were moving to other apps.

Price: Starter is $14.99 per month or $99 per year. Advanced is $24.99 per month or $249.99 per year. Evernote notes that prices through Apple or Google may differ. Visit Evernote

Comparison table

App	Best for	Built-in AI	Where notes live	Team plans	Lowest price that includes AI (USD)
Notion	Team wikis and specs	Agent, search, meeting notes, custom agents	Notion cloud	Yes (Business, Enterprise)	$20/member/month annual (Business)
Obsidian	Local-first Markdown	None built in; plugins and Web Clipper Interpreter with your own key	Local files; optional E2E-encrypted Sync	Shared vaults via Sync	Free app + your AI provider’s API costs
Mem	AI follow-through on personal notes	Mem Agent, voice capture, deep search	Mem cloud (not E2E encrypted)	No	Free (25 notes/month); Plus $9/month
Capacities	Structured personal knowledge	Assistant, chat, media analysis (light budget on Pro)	Capacities cloud, offline support	No	Pro $9.99/month billed yearly
Gemini Notebook	Research over uploaded sources	Source-grounded Q&A, Audio Overviews, code execution (rolling out)	Google cloud	Via Google Workspace	Free; higher limits from $4.99/month
Evernote	Clipping and scanning archives	AI Assistant, Semantic Search, Transcribe, Edit	Evernote cloud	Yes (Enterprise)	Starter $99/year

Pricing (as of October 2026)

All prices are list prices in USD, excluding tax, from each vendor’s pricing page on October 17, 2026.

Notion: Free; Plus $10/member/month annual ($12 monthly), AI trial only; Business $20 annual ($24 monthly) with AI; Enterprise custom. Notion credits are $10 per 1,000 monthly or $13 per 1,000 annually. Notion pricing
Obsidian: app free; Sync $4/user/month annual ($5 monthly); Publish $8/site/month annual ($10 monthly); optional Commercial license $50/user/year; Catalyst $25 one-time.
Mem: Free; Plus $9/month; Pro $29/month; Pro 2×, 5×, 10× and 20× at $49, $99, $149 and $199/month.
Capacities: Basic free; Pro $9.99/month billed yearly or $11.99 monthly; Believer from $12.49/month; Plus AI power-up $8.33/month billed annually. Capacities is running a 40% back-to-school discount on annual Pro for students.
Gemini Notebook: free; higher limits with Google AI Plus ($4.99/month), Pro ($19.99/month) or Ultra (from $99.99/month).
Evernote: Free; Starter $14.99/month or $99/year; Advanced $24.99/month or $249.99/year; Enterprise via sales.

Prices verified against each vendor’s official pricing page (listed under Sources). Plans, promotions and renewal prices change often — confirm on the vendor’s page before you buy.

How to choose

Is it for a team or for you? For shared, permissioned knowledge, Notion is the pick here built around team workspaces with SSO and admin controls (Evernote also sells an Enterprise plan). Mem and Capacities are explicitly individual products.
How much do you care about where notes live? If you want files on disk that you can version with Git and process with any tool, Obsidian is the clear fit. Everything else stores notes in the vendor’s cloud.
Do you want AI inside the app, or your own assistant reading your notes? Notion, Evernote, Mem and Capacities now support MCP or connectors, so ChatGPT, Claude or a coding agent can read your notes from outside. If you already pay for a general assistant, that may matter more than the app’s built-in AI. Our guide to ChatGPT, Claude and Gemini for work covers those assistants.
Are you capturing or researching? For synthesising a fixed set of documents, Gemini Notebook’s source-grounded answers are a different and narrower tool than a notes app. Many people use it alongside one.
Check the usage caps. Mem caps new notes per month, Capacities Pro includes only a light AI budget, Notion meters AI in six-hour windows, and Evernote’s Free and Starter plans cap notes and devices.

Bottom line

In our assessment, teams that want AI over shared docs should start with Notion, accepting that it means the Business plan. Developers who value plain files and privacy will be happier in Obsidian with a plugin or the Web Clipper’s Interpreter and their own model. Mem suits individuals who want an agent to chase follow-ups, if its monthly note caps fit. Capacities is a well-priced structured option for individuals, Gemini Notebook is a strong free research companion, and Evernote makes most sense if your archive is already there.

FAQ

Which of these apps work without sending notes to an AI provider?

Obsidian by default, since it has no built-in AI, and you decide whether to install AI plugins or use a local model through Ollama. In the other apps, AI features send relevant content to the vendor’s model providers under their privacy terms.

Is NotebookLM discontinued?

No. Google renamed it Gemini Notebook on July 16, 2026 and says it is “the same standalone product”. Notebooks also sync with the Gemini app.

Can these apps record meetings?

Notion (AI Meeting Notes), Mem (Voice Mode) and Evernote (AI Transcribe) can capture meetings without a bot. For dedicated recorders with CRM and team features, see our meeting assistant comparison.

Best AI Note-Taking Apps: Notion, Mem, Obsidian and More