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Obsidian AIの使い方:2026年のよりスマートなノート作成

執筆者 | Last updated Aug 27, 2026

クイックスタート

This guide covers every Obsidian AI feature:

所要時間: 各作品につき5分

このガイドには以下の内容も含まれています。 プロのヒント | よくある間違い | トラブルシューティング | 価格 | 代替案

このガイドを信頼する理由

I have used Obsidian daily for two years and tested every AI plugin covered here.

このチュートリアルは、ベンダーのスクリーンショットではなく、実際の作業経験に基づいています。

Here is a short look at how I work inside my own vault:

Now let us get to the practical part.

How to use Obsidian AI

Obsidian is one of the most flexible note taking apps in the world right now.

But it ships with no AI at all.

You add that yourself with community plugins like Smart Connections and Obsidian Copilot.

That is the difference between a folder of files and a vault that thinks with you.

This guide shows you how, feature by feature.

Obsidian AI チュートリアル

This How to Use Obsidian AI tutorial walks through every feature step by step, from the first setup to the tricks that turn you into a power user.

オブシディアンAI

Turn your notes into a thinking tool. Obsidian is free for personal use, stores every file on your own computer, and lets you add AI plugins in minutes. No account needed to start.

Getting Started with Obsidian AI

Before adding AI, finish this one-time setup.

約3分かかります。

まずはこちらの簡単な概要をご覧ください。

黒曜石

それでは、各ステップを順を追って見ていきましょう。

ステップ1:アカウントを作成する

Go to the Obsidian website and download the free app.

No account is needed for the app itself.

Create an account only when you want Sync or Publish.

チェックポイント: The installer finishes without asking for a card.

Step 2: Open the App and Create a Vault

Launch Obsidian, click Create new vault, and pick a folder on your disk.

That folder is your obsidian vault, and every note lives there as a plain file.

Here is what the interface looks like:

黒曜石

チェックポイント: You should see an empty editor with sidebars on both sides.

Step 3: Turn On Community Plugins

Open Settings, choose Community plugins, then turn off restricted mode.

This is the moment Obsidian becomes an AIアプリ.

✅ 完了: 以下の機能はすべてご利用いただけます。

How to Use Obsidian AI Internal Linking Tool

内部リンク lets you connect notes with double brackets so AI plugins follow your context.

以下に、その使用方法をステップごとに説明します。

ステップ1:メモを開く

Open any note in your obsidian vault and place the cursor mid-sentence.

Step 2: Type Double Brackets

Type two square brackets, then start typing the note name you want.

これは以下のようなものです。

黒曜石

チェックポイント: A dropdown lists matching notes as you type.

Press Enter to link, or create a brand new note instead.

✅ 結果: Your notes now form a network that AIツール can follow.

💡 プロのヒント: Smart Connections reads these links. Tight linking gives better results from every AIアシスタント.

How to Use Obsidian AI Visual Graph

ビジュアルグラフ lets you see how ideas cluster across your obsidian vault at a glance.

以下に、その使用方法をステップごとに説明します。

Step 1: Open Graph View

Press Ctrl+G, or click the graph icon in the left sidebar.

Step 2: Filter the View

Use the filter settings to hide attachments and show one tag.

これは以下のようなものです。

黒曜石

チェックポイント: Clusters of related notes appear as coloured groups.

Step 3: Spot the Gaps

Find orphan notes sitting alone, then link them to a hub.

✅ 結果: You can see where your knowledge is thin before writing.

💡 プロのヒント: Run Smart Connections on an orphan note first. It suggests links the graph missed.

How to Use Obsidian AI Canvas Workspace

Canvas Workspace lets you spread notes and AI drafts across one infinite board.

以下に、その使用方法をステップごとに説明します。

ステップ1:キャンバスを作成する

Right-click a folder, choose New canvas, then name the file.

Step 2: Drag Notes In

Drag existing obsidian notes onto the board and group them by theme.

これは以下のようなものです。

黒曜石

チェックポイント: Cards show live note content, not static copies.

Step 3: Add AI Output

Paste AI drafts into cards, then connect the cards with arrows.

✅ 結果: One board now holds your research, your ideas, and every AI answer.

💡 プロのヒント: Keep a separate AI Ideas canvas. Generated content stays apart from your original thinking.

How to Use Obsidian AI Plugin Library

プラグインライブラリ lets you install community plugins that add AI tools to Obsidian.

以下に、その使用方法をステップごとに説明します。

Step 1: Open Community Plugins

Go to Settings, choose Community plugins, then turn off restricted mode.

Step 2: Search and Install

Search for Smart Connections, Copilot, or AI Assistant, then click Install.

これは以下のようなものです。

黒曜石

チェックポイント: The plugin appears in your installed list with a toggle.

Step 3: Enable and Configure

Turn the plugin on, open its tab, and paste your api key.

✅ 結果: Your AI integration is live and ready to read notes.

💡 プロのヒント: Check reviews and permissions first. Community plugins are mostly safe, but nobody audits them.

How to Use Obsidian AI Collaboration Tool

Collaboration Tool lets you share an encrypted vault with teammates and keep every version.

以下に、その使用方法をステップごとに説明します。

Step 1: Turn On Sync

Buy a Sync account, then enable Sync inside the settings panel.

Step 2: Create a Shared Vault

Create a remote vault, then invite collaborators by email address.

これは以下のようなものです。

黒曜石

チェックポイント: Teammates see your changes within a few seconds.

Step 3: Set Version History

Choose how long version history is kept before older data gets trimmed.

✅ 結果: Your team edits one shared collection of notes without conflicts.

💡 プロのヒント: Keep AI drafts in their own folder. Teammates can then tell machine 文章 from yours.

How to Use Obsidian AI Daily Notes

Daily Notes lets you capture fleeting thoughts and let AI summarize your week.

以下に、その使用方法をステップごとに説明します。

Step 1: Enable Daily Notes

Open Settings, find Daily notes, then set a folder and date format.

Step 2: Capture Fleeting Thoughts

Write quick lines all day. Do not stop to organise anything.

これは以下のようなものです。

Obsidian 2026で日々のメモを管理する方法(ステップバイステップ)

チェックポイント: A new dated note opens each morning automatically.

Step 3: Summarize With AI

Ask Copilot chat mode to summarize this week of daily notes.

✅ 結果: Every stray thought gets captured, then processed into something you can search.

💡 プロのヒント: Run a weekly review. Distracted ideas resurface instead of sitting stuck at the bottom.

How to Customize Obsidian AI Appearance

Customizable Appearance lets you shape the interface around the way you actually write.

以下に、その使用方法をステップごとに説明します。

ステップ1:外観設定を開く

Go to Settings, then Appearance, and pick a light or dark base.

Step 2: Adjust Reading Comfort

Change font size, line width, and heading scale to suit your writing.

これは以下のようなものです。

オブシディアンの外観をカスタマイズする

チェックポイント: Text reflows the moment you move a slider.

Step 3: Toggle Sidebar Panels

Hide panels you never use so the AI chat panel gets room.

✅ 結果: The interface finally matches how you read long AI answers.

💡 プロのヒント: Widen readable line length before pasting long AI output. Cramped lines hide obvious errors.

How to Use Obsidian AI Custom Themes

Custom Themes lets you swap the whole look of your app in one click.

以下に、その使用方法をステップごとに説明します。

Step 1: Browse the Theme List

Open Settings, then Appearance, and click Manage beside Themes.

Step 2: Install a Theme

Preview a few options, then install the one that fits your work.

これは以下のようなものです。

CSSとスタイル設定を使ってObsidianテーマをカスタマイズする方法

チェックポイント: The whole app repaints the second you apply it.

Step 3: Tweak With Style Settings

Install the Style Settings plugin to adjust colours and spacing further.

✅ 結果: Your vault looks like a tool you actually want to open.

💡 プロのヒント: Minimal themes pair well with an AI chatbot panel because they keep contrast high.

How to Use Obsidian AI Offline Access

オフラインアクセス lets you run local models so your notes never leave your computer.

以下に、その使用方法をステップごとに説明します。

Step 1: Confirm Local Storage

Your notes are plain markdown files sitting on your own disk.

Step 2: Install LM Studio

Download LM Studio, then start a local inference server on your machine.

これは以下のようなものです。

チェックポイント: The server shows a local URL and a model name.

Step 3: Point Obsidian At It

Paste that server URL and model name into your AI plugin settings.

✅ 結果: Large language models answer questions without your data leaving the computer.

💡 プロのヒント: Smaller models feel slower but keep private research fully offline. Test a few first.

Obsidian AI Pro Tips and Shortcuts

After two years of daily use, these are the tips I give every new user.

想像する your vault as a map of meaning, and these shortcuts as the fastest route across it.

キーボードショートカット

アクションショートカット
コマンドパレットを開くCtrl + P
Quick switcher for notesCtrl + O
Open graph viewCtrl + G
リンクを挿入Ctrl + K

ほとんどの人が見逃す隠れた機能

  • Similarity scores: The Smart Connections plugin scores each match, so you can see how close two ideas really are. Old insights resurface on their own.
  • Vault Q&A: Copilot indexes every note, then lets you talk to your whole vault in plain English or ask for feedback on a draft.
  • Auto metadata: Pair Templater with an AI prompt to fill tags and summaries, killing hours of manual tasks.

Obsidian AI Common Mistakes to Avoid

Mistake #1: Treating AI Output as Finished Writing

❌ 間違い: Pasting generated text straight into permanent notes and moving on.

✅ 右: Verify AI-generated content, then rewrite it in your own words. AI bridges ideas; it does not replace original thinking.

Mistake #2: Installing Every AI Plugin at Once

❌ 間違い: Adding AI plugins until the app crawls and nothing feels reliable.

✅ 右: Start with Smart Connections alone. Add Obsidian Copilot later, once you actually need chat mode.

Mistake #3: Sending Private Notes to Hosted AI Models

❌ 間違い: Pasting client research into a hosted ai chatbot without reading the terms.

✅ 右: Run local models through LM Studio for anything sensitive. For example, client research should never leave your machine.

Obsidian AI Troubleshooting

Problem: Smart Connections Returns Nothing

原因: Embeddings are still building, which takes a while on a large vault.

修理: Wait for indexing to finish. Watch the progress notice in the status bar.

Problem: Copilot Shows an API Key Error

原因: The key has no credit, or a stray space came along when you pasted it.

修理: Copy the key again from your provider account, paste it, then reload Obsidian.

Problem: AI Answers Miss Relevant Information

原因: The plugin has not indexed your newest obsidian notes yet.

修理: Run the refresh index command, then ask the exact same 質問 また。

📌 注記: If none of these help, ask in the Obsidian community forum.

Obsidian AIとは何ですか?

黒曜石メモアプリ that keeps every file as plain markdown on your own computer.

It has no built-in AI.

Obsidian AI simply means adding AI to that app through community plugins.

Using ai in obsidian covers two different things.

Semantic search surfaces related notes, while generative ai writes, summarises, and answers questions.

Thousands of ai enthusiasts keep that plugin library growing every week.

Think of it like hiring a librarian for a library you already own.

こちらの簡単な概要をご覧ください。

Here are the features you will use most:

  • 内部リンク: Double-bracket links build the network that AI plugins read
  • 視覚的なグラフ: A live map that shows how your ideas connect
  • Canvas Workspace: An infinite board for research, drafts, and AI output
  • プラグインライブラリ: The marketplace where every AI plugin comes from
  • Collaboration Tool: Sync a shared vault across people and デバイス
  • 日々のメモ: A dated page that catches thoughts before they vanish
  • Customizable Appearance: Font, width, and panel controls for long reading sessions
  • Custom Themes: Community themes that repaint the entire app
  • オフラインアクセス: Plain markdown files plus local models for private work

For the full breakdown, read our Obsidian review, and browse more posts on AI tools while you are there.

黒曜石

Obsidian AI Pricing

The app is free. Here is what the paid add-ons cost in 2026:

プラン価格最適な用途
同期月額4ドルKeeping one vault current across your phone and laptop
公開月額8ドルTurning notes into a public website
触媒$25早い access builds and insider community access
コマーシャル年間50ドルUsing Obsidian for work at a company

無料トライアル: The app itself is free for personal use, so every AI plugin costs you nothing to test.

返金保証: Sync and Publish bill monthly and can be cancelled at any moment.

オブシディアンの価格

💰 最もお得な価格: Sync — four dollars keeps your notes and AI index the same on every device.

Obsidian AI vs Alternatives

How does Obsidian compare? Here is the landscape:

道具最適な用途価格評価
黒曜石Local-first AI note taking無料⭐ 4.6
概念オールインワンワークスペース月額10ドル⭐ 4.6
クリックアップTeam tasks月額7ドル⭐ 4.5
あらゆるタイプLocal-first privacy無料⭐ 4.4
コーダDocs plus databases月額10ドル⭐ 4.5
xタイルビジュアルプランニング月額8ドル⭐ 4.4
容量オブジェクトベースのノート月額12ドル⭐ 4.4
クラフト美しい文書月額10ドル⭐ 4.6
AFFiNEOpen-source hybrid無料⭐ 4.3

おすすめ商品:

  • 総合ベスト: Obsidian — free, offline, and endlessly extendable with ai plugins
  • ベスト予算: Anytype — free, encrypted, and local-first out of the box
  • 初心者におすすめ: Notion — nothing to configure before you create your first page
  • Best for team tasks: ClickUp — notes sit beside deadlines, owners, and project boards

🎯 Obsidian AI Alternatives

Looking for Obsidian AI alternatives? Here are the top options:

  • 🚀 概念: Blocks, databases, and built-in AI in one hosted app. Easier for beginners, but your data lives on their servers.
  • 💼 クリックアップ: Project tasks, docs, and AI writing in one place. Pick it when work is task-driven, not note-driven.
  • 🔒 あらゆるタイプ: Encrypted, local-first, and free. The closest match if privacy is your main reason for leaving hosted apps.
  • 📊 コーダ: Documents that behave like apps, with formulas and tables. Strong for process docs and team dashboards.
  • 🎨 xタイル: Card-based boards that feel like a digital desk. Good if you think visually more than you think in outlines.
  • 🧠 容量: Notes organised by object type instead of folders. Built-in AI helps tag and connect what you save.
  • クラフト: Polished writing and sharing on Apple devices. The nicest place to write documents other people will read.
  • 🔧 AFFiNE: Open-source mix of docs, whiteboard, and database. Free to self-host if you want full control of your data.

全リストについては、こちらをご覧ください。 Obsidian AI alternatives ガイド。

⚔️ Obsidian AI Compared

Here is how Obsidian stacks up head to head:

  • Obsidian vs Notion: Notion wins on collaboration and templates. Obsidian wins on speed, offline access, and local AI models.
  • Obsidian vs ClickUp: ClickUp wins for team tasks and deadlines. Obsidian wins for deep research and personal knowledge management.
  • Obsidian vs Anytype: Anytype matches Obsidian on privacy. Obsidian wins on community plugins and mature AI integration.
  • Obsidian vs Coda: Coda wins for structured data and オートメーション. Obsidian wins for linked writing and offline notes.
  • Obsidian vs xTiles: xTiles wins on visual layout out of the box. Obsidian wins on Canvas plus a full plugin library.
  • オブシディアン vs キャパシティ: Capacities wins for structured collections. Obsidian wins on local models, custom prompts, and file ownership.
  • 黒曜石 vs クラフト: Craft wins on design and polish. Obsidian wins on AI plugins, graph view, and plain-text control.
  • Obsidian vs AFFiNE: AFFiNE wins for open-source self-hosting. Obsidian wins on stability and a far larger plugin community.

Start Using Obsidian AI Now

You now know how to use every major feature:

  • ✅ Internal Linking
  • ✅ Visual Graph
  • ✅ Canvas Workspace
  • ✅ Plugin Library
  • ✅ Collaboration Tool
  • ✅ Daily Notes
  • ✅ Customizable Appearance
  • ✅ Custom Themes
  • ✅ オフラインアクセス

次のステップ: Pick one feature and try it today.

Most people start with Internal Linking, because it makes the rest of the vault make sense.

5分もかかりません。

The fun part starts the day your own notes begin answering back.

よくある質問

Obsidian内でAIを使用する方法は?

Open Settings, turn on community plugins, then install Smart Connections or Obsidian Copilot. Add your API key, or point the plugin at LM Studio for local models.

Obsidian AIは無料で利用できますか?

Obsidian is free for personal use, and Smart Connections is free too. Copilot needs an api key, so you pay the model provider per request.

Obsidianに最適なAIはどれですか?

Smart Connections wins at finding relevant information offline. Obsidian Copilot wins at chat mode, custom prompts, and vault-wide answers. Plenty of people run both.

できる チャットGPT link with Obsidian?

Yes. Paste an OpenAI api key into Copilot or AI Assistant settings. ChatGPT models then answer questions about your obsidian notes inside the app.

Obsidian AIは何に使われているのですか?

It surfaces related notes, summarizes research, drafts writing, and fills in metadata. Think of it as an assistant that has read your whole vault.

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