diff --git a/package.json b/package.json
index 5d6bca7..fecc3a4 100644
--- a/package.json
+++ b/package.json
@@ -37,6 +37,7 @@
     "chart.js": "^4.4.2",
     "js-tiktoken": "^1.0.10",
     "lucide-react": "^0.363.0",
+    "minimatch": "^9.0.4",
     "openai": "^4.30.0",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
diff --git a/src/api/client.ts b/src/api/client.ts
index 6c97ea8..4cb42cd 100644
--- a/src/api/client.ts
+++ b/src/api/client.ts
@@ -113,7 +113,7 @@ export class BaseAPIClient implements APIClient {
   async fetchCompletions(language: string, prefix: string, suffix: string) {
     const { settings } = this.plugin;
 
-    const instance = this.getInstance(settings.chat.provider);
+    const instance = this.getInstance(settings.completions.provider);
     if (instance === undefined) {
       return;
     }
diff --git a/src/api/provider.ts b/src/api/provider.ts
index 6927bef..5f6af4e 100644
--- a/src/api/provider.ts
+++ b/src/api/provider.ts
@@ -33,11 +33,13 @@ export const OPENAI_MODELS = [
   'gpt-3.5-turbo-16k-0613',
 ] as const;
 
-// TODO
-export const OPENROUTER_MODELS = ['gpt-4'];
+// TODO:
+// This is a placeholder.
+export const OPENROUTER_MODELS = ['gpt-4'] as const;
 
-// TODO
-export const OLLAMA_MODELS = ['gpt-4'];
+// TODO:
+// This is a placeholder.
+export const OLLAMA_MODELS = ['gpt-4'] as const;
 
 export const MODELS = {
   openai: OPENAI_MODELS,
diff --git a/src/api/usage.ts b/src/api/usage.ts
index 783f41d..f6481fe 100644
--- a/src/api/usage.ts
+++ b/src/api/usage.ts
@@ -57,33 +57,41 @@ const OPENAI_MODEL_OUTPUT_COSTS: Record<OpenAIModel, number> = {
   'gpt-3.5-turbo-16k-0613': 1.5,
 };
 
-// TODO
+// TODO:
+// This is a placeholder.
 const OPENROUTER_INPUT_COSTS: Record<OpenRouterModel, number> = {
   'gpt-4': 30,
 };
 
-// TODO
+// TODO:
+// This is a placeholder.
 const OPENROUTER_OUTPUT_COSTS: Record<OpenRouterModel, number> = {
   'gpt-4': 60,
 };
 
-// TODO
+// TODO:
+// This is a placeholder.
 const OLLAMA_INPUT_COSTS: Record<OllamaModel, number> = {
   'gpt-4': 0,
 };
 
-// TODO
+// TODO:
+// This is a placeholder.
 const OLLAMA_OUTPUT_COSTS: Record<OllamaModel, number> = {
   'gpt-4': 0,
 };
 
-const INPUT_COSTS: Record<Provider, Record<Model, number>> = {
+// TODO:
+// Replace `Record<string, number>` to an appropriate type.
+const INPUT_COSTS: Record<Provider, Record<string, number>> = {
   openai: OPENAI_MODEL_INPUT_COSTS,
   openrouter: OPENROUTER_INPUT_COSTS,
   ollama: OLLAMA_INPUT_COSTS,
 };
 
-const OUTPUT_COSTS: Record<Provider, Record<Model, number>> = {
+// TODO:
+// Replace `Record<string, number>` to an appropriate type.
+const OUTPUT_COSTS: Record<Provider, Record<string, number>> = {
   openai: OPENAI_MODEL_OUTPUT_COSTS,
   openrouter: OPENROUTER_OUTPUT_COSTS,
   ollama: OLLAMA_OUTPUT_COSTS,
diff --git a/src/main.ts b/src/main.ts
index 334278e..c58efa5 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -1,5 +1,6 @@
 import { Extension } from '@codemirror/state';
-import { addIcon, Notice, Plugin, setIcon } from 'obsidian';
+import { minimatch } from 'minimatch';
+import { addIcon, MarkdownView, Notice, Plugin, setIcon } from 'obsidian';
 import { MemoryCacheProxy } from './api/cache';
 import { APIClient, BaseAPIClient } from './api/client';
 import { UsageMonitorProxy, UsageTracker } from './api/usage';
@@ -191,9 +192,25 @@ export default class Markpilot extends Plugin {
 
   getEditorExtension() {
     return inlineCompletionsExtension(async (...args) => {
-      if (this.settings.completions.enabled) {
-        return this.client.fetchCompletions(...args);
+      // TODO:
+      // Extract this logic to somewhere appropriate.
+      const view = this.app.workspace.getActiveViewOfType(MarkdownView);
+      const file = view?.file;
+      const content = view?.editor.getValue();
+      const isIgnoredFile = this.settings.completions.ignoredFiles.some(
+        (pattern) => file?.path && minimatch(file?.path, pattern),
+      );
+      const hasIgnoredTags = this.settings.completions.ignoredTags.some((tag) =>
+        content?.includes(tag),
+      );
+      if (
+        isIgnoredFile ||
+        hasIgnoredTags ||
+        !this.settings.completions.enabled
+      ) {
+        return;
       }
+      return this.client.fetchCompletions(...args);
     }, this);
   }
 
diff --git a/src/settings.ts b/src/settings.ts
index 5a3b496..74de365 100644
--- a/src/settings.ts
+++ b/src/settings.ts
@@ -29,6 +29,8 @@ export interface MarkpilotSettings {
     windowSize: number;
     acceptKey: string;
     rejectKey: string;
+    ignoredFiles: string[];
+    ignoredTags: string[];
   };
   chat: {
     enabled: boolean;
@@ -64,13 +66,15 @@ export const DEFAULT_SETTINGS: MarkpilotSettings = {
   completions: {
     enabled: true,
     provider: 'openai',
-    model: 'gpt-3.5-turbo',
+    model: 'gpt-3.5-turbo-instruct',
     maxTokens: 64,
     temperature: 0,
     waitTime: 500,
     windowSize: 512,
     acceptKey: 'Tab',
     rejectKey: 'Escape',
+    ignoredFiles: [],
+    ignoredTags: [],
   },
   chat: {
     enabled: true,
@@ -148,13 +152,8 @@ export class MarkpilotSettingTab extends PluginSettingTab {
         text
           .setValue(settings.providers.ollama.apiUrl ?? '')
           .onChange(async (value) => {
-            if (validateURL(value)) {
-              new Notice('Invalid Ollama API URL.');
-              return;
-            }
             settings.providers.ollama.apiUrl = value;
             await plugin.saveSettings();
-            new Notice('Successfully saved Ollama API URL.');
           }),
       );
 
@@ -168,11 +167,16 @@ export class MarkpilotSettingTab extends PluginSettingTab {
             new Notice('Ollama API URL is not set.');
             return;
           }
-          // TODO
-          const response = await fetch(apiUrl);
-          if (response.ok) {
+          if (!validateURL(apiUrl)) {
+            new Notice('Invalid Ollama API URL.');
+            return;
+          }
+          // TODO:
+          // Properly implement logic for checking Ollama API status.
+          try {
+            await fetch(apiUrl);
             new Notice('Successfully connected to Ollama API.');
-          } else {
+          } catch {
             new Notice('Failed to connect to Ollama API.');
           }
         }),
@@ -198,44 +202,48 @@ export class MarkpilotSettingTab extends PluginSettingTab {
       );
 
     new Setting(containerEl)
-      .setDisabled(!settings.chat.enabled)
       .setName('Provider')
       .setDesc('Select the provider for inline completions.')
       .addDropdown((dropdown) => {
         for (const option of PROVIDERS) {
           dropdown.addOption(option, option);
         }
-        dropdown.setValue(settings.completions.provider);
-        dropdown.onChange(async (value) => {
-          settings.completions.provider = value as Provider;
-          await plugin.saveSettings();
-          this.display(); // Re-render settings tab
-        });
+        dropdown
+          .setDisabled(!settings.completions.enabled)
+          .setValue(settings.completions.provider)
+          .onChange(async (value) => {
+            settings.completions.provider = value as Provider;
+            await plugin.saveSettings();
+            this.display(); // Re-render settings tab
+          });
       });
 
     new Setting(containerEl)
-      .setDisabled(!settings.completions.enabled)
       .setName('Model')
       .setDesc('Select the model for inline completions.')
       .addDropdown((dropdown) => {
         for (const option of MODELS[settings.completions.provider]) {
           dropdown.addOption(option, option);
         }
-        dropdown.setValue(settings.completions.model);
-        dropdown.onChange(async (value) => {
-          settings.completions.model = value as Model;
-          await plugin.saveSettings();
-        });
+        dropdown
+          .setDisabled(!settings.completions.enabled)
+          .setValue(settings.completions.model)
+          .onChange(async (value) => {
+            settings.completions.model = value as Model;
+            await plugin.saveSettings();
+          });
       });
 
     new Setting(containerEl)
-      .setDisabled(!settings.completions.enabled)
       .setName('Max tokens')
       .setDesc('Set the max tokens for inline completions.')
       .addSlider((slider) =>
         slider
+          .setDisabled(!settings.completions.enabled)
           .setValue(settings.completions.maxTokens)
           .setLimits(128, 8192, 128)
+          // TODO:
+          // Figure out how to add unit to the slider
           .setDynamicTooltip()
           .onChange(async (value) => {
             settings.completions.maxTokens = value;
@@ -244,11 +252,11 @@ export class MarkpilotSettingTab extends PluginSettingTab {
       );
 
     new Setting(containerEl)
-      .setDisabled(!settings.completions.enabled)
       .setName('Temperature')
       .setDesc('Set the temperature for inline completions.')
       .addSlider((slider) =>
         slider
+          .setDisabled(!settings.completions.enabled)
           .setValue(settings.completions.temperature)
           .setLimits(0, 1, 0.01)
           .setDynamicTooltip()
@@ -259,13 +267,13 @@ export class MarkpilotSettingTab extends PluginSettingTab {
       );
 
     new Setting(containerEl)
-      .setDisabled(!settings.completions.enabled)
       .setName('Wait time')
       .setDesc(
         'Time in milliseconds which it will wait for before fetching inline completions from the server.',
       )
       .addSlider((slider) =>
         slider
+          .setDisabled(!settings.completions.enabled)
           .setValue(settings.completions.waitTime)
           .setLimits(0, 1000, 100)
           .setDynamicTooltip()
@@ -280,13 +288,13 @@ export class MarkpilotSettingTab extends PluginSettingTab {
       );
 
     new Setting(containerEl)
-      .setDisabled(!settings.completions.enabled)
       .setName('Window size')
       .setDesc(
         'Set the window size for inline completions. The window size the number of characters around the cursor used to obtain inline completions',
       )
       .addSlider((slider) =>
         slider
+          .setDisabled(!settings.completions.enabled)
           .setValue(settings.completions.windowSize)
           .setLimits(128, 8192, 128)
           .setDynamicTooltip()
@@ -298,13 +306,13 @@ export class MarkpilotSettingTab extends PluginSettingTab {
       );
 
     new Setting(containerEl)
-      .setDisabled(!settings.completions.enabled)
       .setName('Accept key')
       .setDesc(
         'Set the key to accept inline completions. The list of available keys can be found at: https://developer.mozilla.org/en-US/docs/Web/API/UI_Events/Keyboard_event_key_values',
       )
       .addText((text) =>
         text
+          .setDisabled(!settings.completions.enabled)
           .setValue(settings.completions.acceptKey)
           .onChange(async (value) => {
             settings.completions.acceptKey = value;
@@ -314,13 +322,13 @@ export class MarkpilotSettingTab extends PluginSettingTab {
       );
 
     new Setting(containerEl)
-      .setDisabled(!settings.completions.enabled)
       .setName('Reject key')
       .setDesc(
         'Set the key to reject inline completions. The list of available keys can be found at: https://developer.mozilla.org/en-US/docs/Web/API/UI_Events/Keyboard_event_key_values',
       )
       .addText((text) =>
         text
+          .setDisabled(!settings.completions.enabled)
           .setValue(settings.completions.rejectKey)
           .onChange(async (value) => {
             settings.completions.rejectKey = value;
@@ -329,6 +337,39 @@ export class MarkpilotSettingTab extends PluginSettingTab {
           }),
       );
 
+    new Setting(containerEl)
+
+      .setName('Ignored files')
+      .setDesc(
+        'Set the list of files to ignore inline completions. The completions will not be triggered in these files.',
+      )
+      .addTextArea((text) =>
+        text
+          .setDisabled(!settings.completions.enabled)
+          .setValue(settings.completions.ignoredFiles.join('\n'))
+          .setPlaceholder('myFile.md\nmyDirectory/**/*.md')
+          .onChange(async (value) => {
+            settings.completions.ignoredFiles = value.split('\n');
+            await plugin.saveSettings();
+          }),
+      );
+
+    new Setting(containerEl)
+      .setName('Ignored tags')
+      .setDesc(
+        'Set the list of tags to ignore inline completions. The completions will not be triggered in these tags.',
+      )
+      .addTextArea((text) =>
+        text
+          .setDisabled(!settings.completions.enabled)
+          .setValue(settings.completions.ignoredTags.join('\n'))
+          .setPlaceholder('#myTag\n#myTag2')
+          .onChange(async (value) => {
+            settings.completions.ignoredTags = value.split('\n');
+            await plugin.saveSettings();
+          }),
+      );
+
     /************************************************************/
     /*                        Chat View                         */
     /************************************************************/
@@ -352,42 +393,44 @@ export class MarkpilotSettingTab extends PluginSettingTab {
       );
 
     new Setting(containerEl)
-      .setDisabled(!settings.chat.enabled)
       .setName('Provider')
       .setDesc('Select the provider for chat view.')
       .addDropdown((dropdown) => {
         for (const option of PROVIDERS) {
           dropdown.addOption(option, option);
         }
-        dropdown.setValue(settings.chat.provider);
-        dropdown.onChange(async (value) => {
-          settings.chat.provider = value as Provider;
-          await plugin.saveSettings();
-          this.display(); // Re-render settings tab
-        });
+        dropdown
+          .setDisabled(!settings.chat.enabled)
+          .setValue(settings.chat.provider)
+          .onChange(async (value) => {
+            settings.chat.provider = value as Provider;
+            await plugin.saveSettings();
+            this.display(); // Re-render settings tab
+          });
       });
 
     new Setting(containerEl)
-      .setDisabled(!settings.chat.enabled)
       .setName('Model')
       .setDesc('Select the model for GPT.')
       .addDropdown((dropdown) => {
         for (const option of MODELS[settings.chat.provider]) {
           dropdown.addOption(option, option);
         }
-        dropdown.setValue(settings.chat.model);
-        dropdown.onChange(async (value) => {
-          settings.chat.model = value as Model;
-          await plugin.saveSettings();
-        });
+        dropdown
+          .setDisabled(!settings.chat.enabled)
+          .setValue(settings.chat.model)
+          .onChange(async (value) => {
+            settings.chat.model = value as Model;
+            await plugin.saveSettings();
+          });
       });
 
     new Setting(containerEl)
-      .setDisabled(!settings.chat.enabled)
       .setName('Max tokens')
       .setDesc('Set the max tokens for chat view.')
       .addSlider((slider) =>
         slider
+          .setDisabled(!settings.chat.enabled)
           .setValue(settings.chat.maxTokens)
           .setLimits(128, 8192, 128)
           .setDynamicTooltip()
@@ -398,11 +441,11 @@ export class MarkpilotSettingTab extends PluginSettingTab {
       );
 
     new Setting(containerEl)
-      .setDisabled(!settings.chat.enabled)
       .setName('Temperature')
       .setDesc('Set the temperature for chat view.')
       .addSlider((slider) =>
         slider
+          .setDisabled(!settings.chat.enabled)
           .setValue(settings.chat.temperature)
           .setLimits(0, 1, 0.01)
           .setDynamicTooltip()
@@ -424,11 +467,14 @@ export class MarkpilotSettingTab extends PluginSettingTab {
         'Turn this on to enable memory caching. The cached data will be invalided on startup.',
       )
       .addToggle((toggle) =>
-        toggle.setValue(settings.cache.enabled).onChange(async (value) => {
-          settings.cache.enabled = value;
-          await plugin.saveSettings();
-          this.display(); // Re-render settings tab
-        }),
+        toggle
+          .setDisabled(!settings.completions.enabled)
+          .setValue(settings.cache.enabled)
+          .onChange(async (value) => {
+            settings.cache.enabled = value;
+            await plugin.saveSettings();
+            this.display(); // Re-render settings tab
+          }),
       );
 
     /************************************************************/
diff --git a/yarn.lock b/yarn.lock
index 74f5900..4a12b2b 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -501,6 +501,13 @@ brace-expansion@^1.1.7:
     balanced-match "^1.0.0"
     concat-map "0.0.1"
 
+brace-expansion@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-2.0.1.tgz#1edc459e0f0c548486ecf9fc99f2221364b9a0ae"
+  integrity sha512-XnAIvQ8eM+kC6aULx6wuQiwVsnzsi9d3WxzV3FpWTGA19F621kwdbsAcFKXgKUHZWsy+mY6iL1sHTxWEFCytDA==
+  dependencies:
+    balanced-match "^1.0.0"
+
 braces@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/braces/-/braces-3.0.2.tgz#3454e1a462ee8d599e236df336cd9ea4f8afe107"
@@ -1672,6 +1679,13 @@ minimatch@^3.0.5, minimatch@^3.1.1, minimatch@^3.1.2:
   dependencies:
     brace-expansion "^1.1.7"
 
+minimatch@^9.0.4:
+  version "9.0.4"
+  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-9.0.4.tgz#8e49c731d1749cbec05050ee5145147b32496a51"
+  integrity sha512-KqWh+VchfxcMNRAJjj2tnsSJdNbHsVgnkBhTNrW7AjVo6OvLtxw8zfT9oLw1JSohlFzJ8jCoTgaoXvJ+kHt6fw==
+  dependencies:
+    brace-expansion "^2.0.1"
+
 moment@2.29.4:
   version "2.29.4"
   resolved "https://registry.yarnpkg.com/moment/-/moment-2.29.4.tgz#3dbe052889fe7c1b2ed966fcb3a77328964ef108"