diff --git a/src/extension/background/APIHandler/APIHandler.ts b/src/extension/background/APIHandler/APIHandler.ts
index 71402ce..f17a102 100644
--- a/src/extension/background/APIHandler/APIHandler.ts
+++ b/src/extension/background/APIHandler/APIHandler.ts
@@ -7,8 +7,6 @@ import AICoreModelHandler from './AICoreModelHandler'
 import AIEmbeddingHandler from './AIEmbeddingHandler'
 import AILanguageDetectorHandler from './AILanguageDetectorHandler'
 import AITranslatorHandler from './AITranslatorHandler'
-import { kPrefGetUseBrowserAI } from '#Shared/API/PrefIPCMessageTypes'
-import { getUseBrowserAI } from '#Shared/Prefs'
 import { kAIGetCapabilities, kAIGetNativeHelperDownloadUrl } from '#Shared/API/AIIPCTypes'
 import System from '../System'
 import { AICapabilities, AIHelperInstalledState } from '#Shared/API/AI'
@@ -48,19 +46,10 @@ class APIHandler {
     this.#translatorHandler = new AITranslatorHandler(this.#server)
 
     this.#server
-      .addRequestHandler(kPrefGetUseBrowserAI, this.#handleGetUseBrowserAI)
       .addRequestHandler(kAIGetCapabilities, this.#handleGetCapabilities)
       .addRequestHandler(kAIGetNativeHelperDownloadUrl, this.#handleGetNativeHelperDownloadUrl)
   }
 
-  /* **************************************************************************/
-  // MARK: Handlers: Prefs
-  /* **************************************************************************/
-
-  #handleGetUseBrowserAI = async () => {
-    return await getUseBrowserAI()
-  }
-
   /* **************************************************************************/
   // MARK: Handlers: Capabilities
   /* **************************************************************************/
diff --git a/src/extension/contentscript-main/AILanguageModel/AILanguageModelFactory.ts b/src/extension/contentscript-main/AILanguageModel/AILanguageModelFactory.ts
index aeb11c1..2dd6619 100644
--- a/src/extension/contentscript-main/AILanguageModel/AILanguageModelFactory.ts
+++ b/src/extension/contentscript-main/AILanguageModel/AILanguageModelFactory.ts
@@ -8,7 +8,6 @@ import {
   kLanguageModelGetCapabilities,
   kLanguageModelCreate
 } from '#Shared/API/AILanguageModel/AILanguageModelIPCTypes'
-import Prefs from '../Prefs'
 import IPC from '../IPC'
 import { throwIPCErrorResponse } from '#Shared/IPC/IPCErrorHelper'
 import AILanguageModelCapabilities from './AILanguageModelCapabilities'
@@ -31,26 +30,11 @@ class AILanguageModelFactory {
     this.#browserAI = browserAI
   }
 
-  /* **************************************************************************/
-  // MARK: Utils
-  /* **************************************************************************/
-
-  /**
-   * @returns true if we should be using the browsers built-in ai for this factory
-   */
-  async #shouldUseBrowserAI () {
-    return typeof (this.#browserAI?.languageModel) === 'object' && await Prefs.getUseBrowserAI()
-  }
-
   /* **************************************************************************/
   // MARK: Capabilities
   /* **************************************************************************/
 
   capabilities = async (options: AILanguageModelCapabilitiesOptions = {}): Promise<AILanguageModelCapabilities> => {
-    if (await this.#shouldUseBrowserAI()) {
-      return this.#browserAI.languageModel.capabilities(options)
-    }
-
     const data = throwIPCErrorResponse(
       await IPC.request(kLanguageModelGetCapabilities, options)
     ) as AILanguageModelCapabilitiesData
@@ -63,10 +47,6 @@ class AILanguageModelFactory {
   /* **************************************************************************/
 
   create = async (options: AILanguageModelCreateOptions = {}) => {
-    if (await this.#shouldUseBrowserAI()) {
-      return this.#browserAI.languageModel.create(options)
-    }
-
     const monitorTarget = new EventTarget()
     const {
       monitor,
diff --git a/src/extension/contentscript-main/AIRewriter/AIRewriterFactory.ts b/src/extension/contentscript-main/AIRewriter/AIRewriterFactory.ts
index 64363d1..79be35f 100644
--- a/src/extension/contentscript-main/AIRewriter/AIRewriterFactory.ts
+++ b/src/extension/contentscript-main/AIRewriter/AIRewriterFactory.ts
@@ -6,7 +6,6 @@ import {
   AIRewriterData
 } from '#Shared/API/AIRewriter/AIRewriterTypes'
 import AIRewriterCapabilities from './AIRewriterCapabilities'
-import Prefs from '../Prefs'
 import IPC from '../IPC'
 import { throwIPCErrorResponse } from '#Shared/IPC/IPCErrorHelper'
 import {
@@ -31,26 +30,11 @@ class AIRewriterFactory {
     this.#browserAI = browserAI
   }
 
-  /* **************************************************************************/
-  // MARK: Utils
-  /* **************************************************************************/
-
-  /**
-   * @returns true if we should be using the browsers built-in ai for this factory
-   */
-  async #shouldUseBrowserAI () {
-    return typeof (this.#browserAI?.rewriter) === 'object' && await Prefs.getUseBrowserAI()
-  }
-
   /* **************************************************************************/
   // MARK: Capabilities
   /* **************************************************************************/
 
   capabilities = async (options: AIRewriterCapabilitiesOptions): Promise<AIRewriterCapabilities> => {
-    if (await this.#shouldUseBrowserAI()) {
-      return this.#browserAI.rewriter.capabilities(options)
-    }
-
     const data = throwIPCErrorResponse(
       await IPC.request(kRewriterGetCapabilities, options)
     ) as AIRewriterCapabilitiesData
@@ -63,10 +47,6 @@ class AIRewriterFactory {
   /* **************************************************************************/
 
   create = async (options: AIRewriterCreateOptions = {}) => {
-    if (await this.#shouldUseBrowserAI()) {
-      return this.#browserAI.rewriter.create(options)
-    }
-
     const monitorTarget = new EventTarget()
     const {
       monitor,
diff --git a/src/extension/contentscript-main/AISummarizer/AISummarizerFactory.ts b/src/extension/contentscript-main/AISummarizer/AISummarizerFactory.ts
index 1a5cc2a..fec183e 100644
--- a/src/extension/contentscript-main/AISummarizer/AISummarizerFactory.ts
+++ b/src/extension/contentscript-main/AISummarizer/AISummarizerFactory.ts
@@ -6,7 +6,6 @@ import {
   AISummarizerData
 } from '#Shared/API/AISummarizer/AISummarizerTypes'
 import AISummarizerCapabilities from './AISummarizerCapabilities'
-import Prefs from '../Prefs'
 import IPC from '../IPC'
 import { throwIPCErrorResponse } from '#Shared/IPC/IPCErrorHelper'
 import {
@@ -31,26 +30,11 @@ class AISummarizerFactory {
     this.#browserAI = browserAI
   }
 
-  /* **************************************************************************/
-  // MARK: Utils
-  /* **************************************************************************/
-
-  /**
-   * @returns true if we should be using the browsers built-in ai for this factory
-   */
-  async #shouldUseBrowserAI () {
-    return typeof (this.#browserAI?.summarizer) === 'object' && await Prefs.getUseBrowserAI()
-  }
-
   /* **************************************************************************/
   // MARK: Capabilities
   /* **************************************************************************/
 
   capabilities = async (options: AISummarizerCapabilitiesOptions): Promise<AISummarizerCapabilities> => {
-    if (await this.#shouldUseBrowserAI()) {
-      return this.#browserAI.summarizer.capabilities(options)
-    }
-
     const data = throwIPCErrorResponse(
       await IPC.request(kSummarizerGetCapabilities, options)
     ) as AISummarizerCapabilitiesData
@@ -63,10 +47,6 @@ class AISummarizerFactory {
   /* **************************************************************************/
 
   create = async (options: AISummarizerCreateOptions = {}) => {
-    if (await this.#shouldUseBrowserAI()) {
-      return this.#browserAI.summarizer.create(options)
-    }
-
     const monitorTarget = new EventTarget()
     const {
       monitor,
diff --git a/src/extension/contentscript-main/AIWriter/AIWriterFactory.ts b/src/extension/contentscript-main/AIWriter/AIWriterFactory.ts
index 0139cd5..c7487eb 100644
--- a/src/extension/contentscript-main/AIWriter/AIWriterFactory.ts
+++ b/src/extension/contentscript-main/AIWriter/AIWriterFactory.ts
@@ -6,7 +6,6 @@ import {
   AIWriterData
 } from '#Shared/API/AIWriter/AIWriterTypes'
 import AIWriterCapabilities from './AIWriterCapabilities'
-import Prefs from '../Prefs'
 import IPC from '../IPC'
 import { throwIPCErrorResponse } from '#Shared/IPC/IPCErrorHelper'
 import {
@@ -31,26 +30,11 @@ class AIWriterFactory {
     this.#browserAI = browserAI
   }
 
-  /* **************************************************************************/
-  // MARK: Utils
-  /* **************************************************************************/
-
-  /**
-   * @returns true if we should be using the browsers built-in ai for this factory
-   */
-  async #shouldUseBrowserAI () {
-    return typeof (this.#browserAI?.writer) === 'object' && await Prefs.getUseBrowserAI()
-  }
-
   /* **************************************************************************/
   // MARK: Capabilities
   /* **************************************************************************/
 
   capabilities = async (options: AIWriterCapabilitiesOptions): Promise<AIWriterCapabilities> => {
-    if (await this.#shouldUseBrowserAI()) {
-      return this.#browserAI.writer.capabilities(options)
-    }
-
     const data = throwIPCErrorResponse(
       await IPC.request(kWriterGetCapabilities, options)
     ) as AIWriterCapabilitiesData
@@ -63,10 +47,6 @@ class AIWriterFactory {
   /* **************************************************************************/
 
   create = async (options: AIWriterCreateOptions = {}) => {
-    if (await this.#shouldUseBrowserAI()) {
-      return this.#browserAI.writer.create(options)
-    }
-
     const monitorTarget = new EventTarget()
     const {
       monitor,
diff --git a/src/extension/contentscript-main/Prefs.ts b/src/extension/contentscript-main/Prefs.ts
deleted file mode 100644
index aa5b03d..0000000
--- a/src/extension/contentscript-main/Prefs.ts
+++ /dev/null
@@ -1,24 +0,0 @@
-import IPC from './IPC'
-import { kPrefGetUseBrowserAI } from '#Shared/API/PrefIPCMessageTypes'
-
-class Prefs {
-  /* **************************************************************************/
-  // MARK: Private
-  /* **************************************************************************/
-
-  #cachedUseBrowserAI: boolean | null = null
-
-  /* **************************************************************************/
-  // MARK: Getters
-  /* **************************************************************************/
-
-  async getUseBrowserAI () {
-    if (typeof (this.#cachedUseBrowserAI) !== 'boolean') {
-      this.#cachedUseBrowserAI = (await IPC.request(kPrefGetUseBrowserAI, {}) as boolean)
-    }
-
-    return this.#cachedUseBrowserAI
-  }
-}
-
-export default new Prefs()
diff --git a/src/extension/ui-options/index.ts b/src/extension/ui-options/index.ts
index 8547cf4..b570135 100644
--- a/src/extension/ui-options/index.ts
+++ b/src/extension/ui-options/index.ts
@@ -22,8 +22,6 @@ import IPCBackgroundMessager from '#Shared/IPC/IPCBackgroundMessager'
 import {
   getDefaultModel,
   setDefaultModel,
-  getUseBrowserAI,
-  setUseBrowserAI,
   setDefaultModelEngine,
   getDefaultModelEngine,
   setModelUpdatePeriod,
@@ -43,37 +41,19 @@ import { AIModelType } from '#Shared/API/AI'
 // MARK: Settings
 /* **************************************************************************/
 
-const kBrowserAiModelId = '__browser__'
-
 function renderDefaultModelOptions (
   $el: HTMLSelectElement,
   selectedModelId: string,
-  modelList: Array<{ id: string, name: string }>,
-  hasBrowserAI: boolean,
-  useBrowserAI: boolean
+  modelList: Array<{ id: string, name: string }>
 ) {
   UI.empty($el)
 
-  if (hasBrowserAI) {
-    modelList = [{ id: kBrowserAiModelId, name: 'Browser AI' }, ...modelList]
-  } else {
-    useBrowserAI = false
-  }
-
   for (const model of modelList) {
     const $option = document.createElement('option')
     $option.value = model.id
     $option.textContent = model.name
-    if (model.id === kBrowserAiModelId) {
-      if (useBrowserAI) {
-        $option.selected = true
-      }
-    } else {
-      if (model.id === selectedModelId) {
-        if ((useBrowserAI && modelList.some(({ id }) => id === kBrowserAiModelId)) === false) {
-          $option.selected = true
-        }
-      }
+    if (model.id === selectedModelId) {
+      $option.selected = true
     }
     $el.appendChild($option)
   }
@@ -111,27 +91,20 @@ async function renderSettings () {
   const $defaultTextModelOpt = document.getElementById('opt-model-text-default') as HTMLSelectElement
   $defaultTextModelOpt.addEventListener('change', async () => {
     const modelId = $defaultTextModelOpt.value
-
-    if (modelId === kBrowserAiModelId) {
-      await setUseBrowserAI(true)
-    } else {
-      await setUseBrowserAI(false)
-      await setDefaultModel(AIModelType.Text, modelId)
-    }
+    await setDefaultModel(AIModelType.Text, modelId)
   })
   ;(async () => {
-    const useBrowserAI = await getUseBrowserAI()
     const defaultModelId = await getDefaultModel(AIModelType.Text)
     const defaultModelList = [
       ...new Set([defaultModelId, Object.values(config.defaultModels)])
     ].map((modelId) => ({ id: modelId, name: modelId }))
 
-    renderDefaultModelOptions($defaultTextModelOpt, defaultModelId, defaultModelList, Boolean(window.ai?.languageModel), useBrowserAI)
+    renderDefaultModelOptions($defaultTextModelOpt, defaultModelId, defaultModelList)
 
     const res = await fetch('https://aibrow.ai/api/model/list.json')
     if (res.ok) {
       const { models } = await res.json()
-      renderDefaultModelOptions($defaultTextModelOpt, defaultModelId, models, Boolean(window.ai?.languageModel), useBrowserAI)
+      renderDefaultModelOptions($defaultTextModelOpt, defaultModelId, models)
     }
   })()
 
@@ -146,12 +119,12 @@ async function renderSettings () {
     const defaultModelList = [
       ...new Set([defaultModelId, Object.values(config.defaultModels)])
     ].map((modelId) => ({ id: modelId, name: modelId }))
-    renderDefaultModelOptions($defaultEmbeddingModelOpt, defaultModelId, defaultModelList, false, false)
+    renderDefaultModelOptions($defaultEmbeddingModelOpt, defaultModelId, defaultModelList)
 
     const res = await fetch('https://aibrow.ai/api/model/list.json')
     if (res.ok) {
       const { models } = await res.json()
-      renderDefaultModelOptions($defaultEmbeddingModelOpt, defaultModelId, models, false, false)
+      renderDefaultModelOptions($defaultEmbeddingModelOpt, defaultModelId, models)
     }
   })()
 
diff --git a/src/shared/API/PrefIPCMessageTypes.ts b/src/shared/API/PrefIPCMessageTypes.ts
deleted file mode 100644
index 4364ca9..0000000
--- a/src/shared/API/PrefIPCMessageTypes.ts
+++ /dev/null
@@ -1 +0,0 @@
-export const kPrefGetUseBrowserAI = 'Pref:GetUseBrowserAI'
diff --git a/src/shared/Prefs.ts b/src/shared/Prefs.ts
index 35b9d8b..02b4436 100644
--- a/src/shared/Prefs.ts
+++ b/src/shared/Prefs.ts
@@ -43,10 +43,6 @@ const kDefaultModelsPrefixKey = `${kPrefKeyPrefix}:defaultModels:`
 export async function getDefaultModel (modelType: AIModelType) { return getPref(`${kDefaultModelsPrefixKey}${modelType}`, config.defaultModels[modelType]) }
 export async function setDefaultModel (modelType: AIModelType, modelId: string) { return setPref(`${kDefaultModelsPrefixKey}${modelType}`, modelId) }
 
-const kDefaultUseBrowserAIKey = `${kPrefKeyPrefix}:useBrowserAI`
-export async function getUseBrowserAI () { return getPref(kDefaultUseBrowserAIKey, false) }
-export async function setUseBrowserAI (use: boolean) { return setPref(kDefaultUseBrowserAIKey, use) }
-
 const kOverrideBrowserAIKey = `${kPrefKeyPrefix}:overrideBrowserAI`
 const kContentscriptMainOverrideId = 'contentscript-main-override'
 export async function getOverrideBrowserAI () { return getPref(kOverrideBrowserAIKey, false) }