diff --git a/README.md b/README.md
index 26f15d3..f8d5c05 100644
--- a/README.md
+++ b/README.md
@@ -83,6 +83,7 @@ To use Internet search you need a [Tavily API key](https://app.tavily.com/home).
 
 ## DONE
 
+- [x] OpenAI base URL as settings
 - [x] DALL-E as tool
 - [x] Google Gemini API
 - [x] Prompt anywhere
diff --git a/defaults/settings.json b/defaults/settings.json
index 88ee697..1d2d79e 100644
--- a/defaults/settings.json
+++ b/defaults/settings.json
@@ -43,6 +43,7 @@
   "engines": {
     "openai": {
       "apiKey": "",
+      "baseURL": "https://api.openai.com/v1",
       "models": {
         "chat": [],
         "image": []
@@ -93,6 +94,7 @@
       }
     },
     "ollama": {
+      "baseURL": "https://api.ollama.com",
       "models": {
         "chat": [],
         "image": []
diff --git a/package-lock.json b/package-lock.json
index e413f7d..2946429 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -13,7 +13,7 @@
         "@el3um4s/run-vbs": "^1.1.2",
         "@excalidraw/markdown-to-text": "^0.1.2",
         "@google/generative-ai": "^0.11.1",
-        "@iktakahiro/markdown-it-katex": "^4.0.1",
+        "@iktakahiro/markdown-it-katex": "^3.0.4",
         "@mistralai/mistralai": "^0.1.3",
         "applescript": "^1.0.0",
         "bootstrap-icons-vue": "^1.11.3",
@@ -36,7 +36,7 @@
         "openai-speech-stream-player": "^1.0.8",
         "pdf2json": "^3.1.2",
         "python-shell": "^5.0.0",
-        "sweetalert2": "^11.10.7",
+        "sweetalert2": "^11.6.13",
         "update-electron-app": "^3.0.0",
         "uuid": "^9.0.1",
         "vue": "^3.4.21"
@@ -2089,24 +2089,21 @@
       "dev": true
     },
     "node_modules/@iktakahiro/markdown-it-katex": {
-      "version": "4.0.1",
-      "resolved": "https://registry.npmjs.org/@iktakahiro/markdown-it-katex/-/markdown-it-katex-4.0.1.tgz",
-      "integrity": "sha512-kGFooO7fIOgY34PSG8ZNVsUlKhhNoqhzW2kq94TNGa8COzh73PO4KsEoPOsQVG1mEAe8tg7GqG0FoVao0aMHaw==",
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/@iktakahiro/markdown-it-katex/-/markdown-it-katex-3.0.4.tgz",
+      "integrity": "sha512-yfxYr9eJ/2coJmju3Rh1TKSOhsnwmBwHgBkDwJ/IgK4qFNzFvMOqIW/I6m3NGwRIVc1NoN528qkwysZDrFDa/Q==",
+      "license": "MIT",
       "dependencies": {
-        "katex": "^0.12.0"
+        "katex": "^0.9.0"
       }
     },
-    "node_modules/@iktakahiro/markdown-it-katex/node_modules/commander": {
-      "version": "2.20.3",
-      "resolved": "https://registry.npmjs.org/commander/-/commander-2.20.3.tgz",
-      "integrity": "sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ=="
-    },
     "node_modules/@iktakahiro/markdown-it-katex/node_modules/katex": {
-      "version": "0.12.0",
-      "resolved": "https://registry.npmjs.org/katex/-/katex-0.12.0.tgz",
-      "integrity": "sha512-y+8btoc/CK70XqcHqjxiGWBOeIL8upbS0peTPXTvgrh21n1RiWWcIpSWM+4uXq+IAgNh9YYQWdc7LVDPDAEEAg==",
+      "version": "0.9.0",
+      "resolved": "https://registry.npmjs.org/katex/-/katex-0.9.0.tgz",
+      "integrity": "sha512-lp3x90LT1tDZBW2tjLheJ98wmRMRjUHwk4QpaswT9bhqoQZ+XA4cPcjcQBxgOQNwaOSt6ZeL/a6GKQ1of3LFxQ==",
+      "license": "MIT",
       "dependencies": {
-        "commander": "^2.19.0"
+        "match-at": "^0.1.1"
       },
       "bin": {
         "katex": "cli.js"
@@ -7111,17 +7108,18 @@
       "peer": true
     },
     "node_modules/electron-winstaller": {
-      "version": "5.3.0",
-      "resolved": "https://registry.npmjs.org/electron-winstaller/-/electron-winstaller-5.3.0.tgz",
-      "integrity": "sha512-ml77/OmeeLFFc+dk3YCwPQrl8rthwYcAea6mMZPFq7cGXlpWyRmmT0LY73XdCukPnevguXJFs+4Xu+aGHJwFDA==",
+      "version": "5.3.1",
+      "resolved": "https://registry.npmjs.org/electron-winstaller/-/electron-winstaller-5.3.1.tgz",
+      "integrity": "sha512-oM8BW3a8NEqG0XW+Vx3xywhk0DyDV4T0jT0zZfWt0IczNT3jHAAvQWBorF8osQDplSsCyXXyxrsrQ8cY0Slb/A==",
       "dev": true,
       "hasInstallScript": true,
+      "license": "MIT",
       "optional": true,
       "dependencies": {
         "@electron/asar": "^3.2.1",
         "debug": "^4.1.1",
         "fs-extra": "^7.0.1",
-        "lodash.template": "^4.2.2",
+        "lodash": "^4.17.21",
         "temp": "^0.9.0"
       },
       "engines": {
@@ -12587,13 +12585,6 @@
       "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==",
       "dev": true
     },
-    "node_modules/lodash._reinterpolate": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/lodash._reinterpolate/-/lodash._reinterpolate-3.0.0.tgz",
-      "integrity": "sha512-xYHt68QRoYGjeeM/XOE1uJtvXQAgvszfBhjV4yvsQH0u2i9I6cI6c6/eG4Hh3UAOVn0y/xAXwmTzEay49Q//HA==",
-      "dev": true,
-      "optional": true
-    },
     "node_modules/lodash.get": {
       "version": "4.4.2",
       "resolved": "https://registry.npmjs.org/lodash.get/-/lodash.get-4.4.2.tgz",
@@ -12606,27 +12597,6 @@
       "integrity": "sha512-0KpjqXRVvrYyCsX1swR/XTK0va6VQkQM6MNo7PqW77ByjAhoARA8EfrP1N4+KlKj8YS0ZUCtRT/YUuhyYDujIQ==",
       "dev": true
     },
-    "node_modules/lodash.template": {
-      "version": "4.5.0",
-      "resolved": "https://registry.npmjs.org/lodash.template/-/lodash.template-4.5.0.tgz",
-      "integrity": "sha512-84vYFxIkmidUiFxidA/KjjH9pAycqW+h980j7Fuz5qxRtO9pgB7MDFTdys1N7A5mcucRiDyEq4fusljItR1T/A==",
-      "dev": true,
-      "optional": true,
-      "dependencies": {
-        "lodash._reinterpolate": "^3.0.0",
-        "lodash.templatesettings": "^4.0.0"
-      }
-    },
-    "node_modules/lodash.templatesettings": {
-      "version": "4.2.0",
-      "resolved": "https://registry.npmjs.org/lodash.templatesettings/-/lodash.templatesettings-4.2.0.tgz",
-      "integrity": "sha512-stgLz+i3Aa9mZgnjr/O+v9ruKZsPsndy7qPZOchbqk2cnTU1ZaldKK+v7m54WoKIyxiuMZTKT2H81F8BeAc3ZQ==",
-      "dev": true,
-      "optional": true,
-      "dependencies": {
-        "lodash._reinterpolate": "^3.0.0"
-      }
-    },
     "node_modules/log-symbols": {
       "version": "4.1.0",
       "resolved": "https://registry.npmjs.org/log-symbols/-/log-symbols-4.1.0.tgz",
@@ -12917,6 +12887,11 @@
       "resolved": "https://registry.npmjs.org/markdown-it-mark/-/markdown-it-mark-4.0.0.tgz",
       "integrity": "sha512-YLhzaOsU9THO/cal0lUjfMjrqSMPjjyjChYM7oyj4DnyaXEzA8gnW6cVJeyCrCVeyesrY2PlEdUYJSPFYL4Nkg=="
     },
+    "node_modules/match-at": {
+      "version": "0.1.1",
+      "resolved": "https://registry.npmjs.org/match-at/-/match-at-0.1.1.tgz",
+      "integrity": "sha512-h4Yd392z9mST+dzc+yjuybOGFNOZjmXIPKWjxBd1Bb23r4SmDOsk2NYCU2BMUBGbSpZqwVsZYNq26QS3xfaT3Q=="
+    },
     "node_modules/matcher": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/matcher/-/matcher-3.0.0.tgz",
@@ -16674,9 +16649,10 @@
       }
     },
     "node_modules/sweetalert2": {
-      "version": "11.10.7",
-      "resolved": "https://registry.npmjs.org/sweetalert2/-/sweetalert2-11.10.7.tgz",
-      "integrity": "sha512-5Jlzrmaitay6KzU+2+LhYu9q+L4v/dZ8oZyEDH14ep0C/QilCnFLHmqAyD/Lhq/lm5DiwsOs6Tr58iv8k3wyGg==",
+      "version": "11.11.0",
+      "resolved": "https://registry.npmjs.org/sweetalert2/-/sweetalert2-11.11.0.tgz",
+      "integrity": "sha512-wKCTtoE6lQVDKaJ5FFq+znk/YykJmJlD8RnLZps8C7DyivctCoRlVeeOwnKfgwKS+QJYon7s++3dmNi3/am1tw==",
+      "license": "MIT",
       "funding": {
         "type": "individual",
         "url": "https://github.com/sponsors/limonte"
diff --git a/package.json b/package.json
index 5e982ad..460ca74 100644
--- a/package.json
+++ b/package.json
@@ -66,7 +66,7 @@
     "@el3um4s/run-vbs": "^1.1.2",
     "@excalidraw/markdown-to-text": "^0.1.2",
     "@google/generative-ai": "^0.11.1",
-    "@iktakahiro/markdown-it-katex": "^4.0.1",
+    "@iktakahiro/markdown-it-katex": "^3.0.4",
     "@mistralai/mistralai": "^0.1.3",
     "applescript": "^1.0.0",
     "bootstrap-icons-vue": "^1.11.3",
@@ -89,7 +89,7 @@
     "openai-speech-stream-player": "^1.0.8",
     "pdf2json": "^3.1.2",
     "python-shell": "^5.0.0",
-    "sweetalert2": "^11.10.7",
+    "sweetalert2": "^11.6.13",
     "update-electron-app": "^3.0.0",
     "uuid": "^9.0.1",
     "vue": "^3.4.21"
diff --git a/src/main/config.ts b/src/main/config.ts
index e8d025d..cb4b7f9 100644
--- a/src/main/config.ts
+++ b/src/main/config.ts
@@ -53,6 +53,9 @@ const buildConfig = (defaults: anyDict, overrides: anyDict): Configuration => {
     delete config.ollama
   }
 
+  // nullify defaults
+  nullifyDefaults(config)
+
   // done
   return config as Configuration
 
@@ -75,6 +78,9 @@ export const loadSettings = (source: App|string): Configuration => {
 export const saveSettings = (dest: App|string, config: anyDict) => {
   try {
 
+    // nullify defaults
+    nullifyDefaults(config)
+
     // remove instructions that are the same as the default
     const settings = JSON.parse(JSON.stringify(config))
     for (const instr in settings.instructions) {
@@ -90,4 +96,13 @@ export const saveSettings = (dest: App|string, config: anyDict) => {
   } catch (error) {
     console.log('Error saving settings data', error)
   }
-}
\ No newline at end of file
+}
+
+const nullifyDefaults = (settings: anyDict) => {
+  if (settings.engines.openai.baseURL == '' || settings.engines.openai.baseURL === defaultSettings.engines.openai.baseURL) {
+    delete settings.engines.openai.baseURL
+  }
+  if (settings.engines.ollama.baseURL == '' || settings.engines.ollama.baseURL === defaultSettings.engines.ollama.baseURL) {
+    delete settings.engines.ollama.baseURL
+  }
+}
diff --git a/src/services/openai.ts b/src/services/openai.ts
index e38c521..56b532c 100644
--- a/src/services/openai.ts
+++ b/src/services/openai.ts
@@ -2,6 +2,7 @@
 import { Message } from '../types/index.d'
 import { LLmCompletionPayload, LlmChunk, LlmCompletionOpts, LlmResponse, LlmStream, LlmToolCall, LlmEventCallback } from '../types/llm.d'
 import { EngineConfig, Configuration } from '../types/config.d'
+import defaults from '../../defaults/settings.json'
 import LlmEngine from './engine'
 import OpenAI from 'openai'
 import { ChatCompletionChunk } from 'openai/resources'
@@ -24,6 +25,7 @@ export default class extends LlmEngine {
     super(config)
     this.client = new OpenAI({
       apiKey: config.engines.openai.apiKey,
+      baseURL: config.engines.openai.baseURL || defaults.engines.openai.baseURL,
       dangerouslyAllowBrowser: true
     })
   }
@@ -52,8 +54,17 @@ export default class extends LlmEngine {
     }
   }
 
+  private setBaseURL() {
+    if (this.client) {
+      this.client.baseURL = this.config.engines.openai.baseURL || defaults.engines.openai.baseURL
+    }
+  }
+
   async complete(thread: Message[], opts: LlmCompletionOpts): Promise<LlmResponse> {
 
+    // set baseURL on client
+    this.setBaseURL()
+
     // call
     const model = opts?.model || this.config.engines.openai.model.chat
     console.log(`[openai] prompting model ${model}`)
@@ -71,6 +82,9 @@ export default class extends LlmEngine {
 
   async stream(thread: Message[], opts: LlmCompletionOpts): Promise<LlmStream> {
 
+    // set baseURL on client
+    this.setBaseURL()
+
     // model: switch to vision if needed
     this.currentModel = this.selectModel(thread, opts?.model || this.getChatModel())
 
diff --git a/src/settings/SettingsOpenAI.vue b/src/settings/SettingsOpenAI.vue
index 44a10a7..4584be2 100644
--- a/src/settings/SettingsOpenAI.vue
+++ b/src/settings/SettingsOpenAI.vue
@@ -19,6 +19,10 @@
       </div>
       <button @click.prevent="onRefresh">{{ refreshLabel }}</button>
     </div>
+    <div class="group">
+      <label>API Base URL</label>
+      <input v-model="baseURL" :placeholder="defaults.engines.openai.baseURL" @keydown.enter.prevent="save" @change="save"/>
+    </div>
   </div>  
 </template>
 
@@ -27,15 +31,18 @@
 import { ref } from 'vue'
 import { store } from '../services/store'
 import { loadOpenAIModels } from '../services/llm'
+import defaults from '../../defaults/settings.json'
 import InputObfuscated from '../components/InputObfuscated.vue'
 
 const apiKey = ref(null)
+const baseURL = ref(null)
 const refreshLabel = ref('Refresh')
 const chat_model = ref(null)
 const chat_models = ref([])
 
 const load = () => {
   apiKey.value = store.config.engines.openai?.apiKey || ''
+  baseURL.value = store.config.engines.openai?.baseURL || ''
   chat_models.value = store.config.engines.openai?.models?.chat || []
   chat_model.value = store.config.engines.openai?.model?.chat || ''
 }
@@ -78,6 +85,7 @@ const onKeyChange = () => {
 
 const save = () => {
   store.config.engines.openai.apiKey = apiKey.value
+  store.config.engines.openai.baseURL = baseURL.value
   store.config.engines.openai.model.chat = chat_model.value
   store.saveSettings()
 }
diff --git a/src/types/config.d.ts b/src/types/config.d.ts
index f501bb3..e8ee523 100644
--- a/src/types/config.d.ts
+++ b/src/types/config.d.ts
@@ -52,6 +52,7 @@ interface ShortcutsConfig {
 
 interface EngineConfig {
   apiKey?: string
+  baseURL?: string
   models: ModelsConfig
   model: ModelConfig
   tts?: TTSConfig