diff --git a/module/ai/config.php b/module/ai/config.php
index a0e49248ec..cbde4f0531 100644
--- a/module/ai/config.php
+++ b/module/ai/config.php
@@ -4,7 +4,7 @@ $config->ai->vendorList['openai']['requiredFields'] = array('key');
 $config->ai->vendorList['azure']['requiredFields']  = array('key', 'resource', 'deployment');
 $config->ai->vendorList['baidu']['requiredFields']  = array('key', 'secret');
 
-$config->ai->models = array('openai-gpt35' => 'openai', 'baidu-ernie' => 'ernie');
+$config->ai->models = array('openai-gpt35' => 'openai', 'openai-gpt4' => 'openai', 'baidu-ernie' => 'ernie');
 
 /* OpenAI GPT configurations. */
 $config->ai->openai = new stdclass();
@@ -34,8 +34,8 @@ $config->ai->openai->params->completion->required = array('prompt', 'max_tokens'
 $config->ai->openai->params->completion->optional = array('suffix', 'temperature', 'top_p', 'n', 'stream', 'logprobs', 'echo', 'stop', 'presence_penalty', 'frequency_penalty', 'best_of', 'logit_bias', 'user');
 
 $config->ai->openai->model = new stdclass();
-$config->ai->openai->model->chat       = 'gpt-3.5-turbo';
-$config->ai->openai->model->function   = 'gpt-3.5-turbo';
+$config->ai->openai->model->chat       = array('openai-gpt35' => 'gpt-3.5-turbo', 'openai-gpt4' => 'gpt-4-1106-preview');
+$config->ai->openai->model->function   = array('openai-gpt35' => 'gpt-3.5-turbo', 'openai-gpt4' => 'gpt-4-1106-preview');
 $config->ai->openai->model->completion = 'gpt-3.5-turbo-instruct';
 
 $config->ai->openai->contentTypeMapping = array('Content-Type: application/json' => array('', 'function', 'chat', 'completion'), 'Content-Type: multipart/form-data' => array());
diff --git a/module/ai/control.php b/module/ai/control.php
index c78d98c849..77e7f34bc4 100644
--- a/module/ai/control.php
+++ b/module/ai/control.php
@@ -145,7 +145,7 @@ class ai extends control
 
         $this->ai->setConfig($modelConfig);
 
-        if($this->config->ai->models[$modelConfig->type] == 'ernie' || $currentVendor == 'azure')
+        if($this->config->ai->models[$modelConfig->type] == 'ernie' || $currentVendor == 'azure' || $modelConfig->type == 'openai-gpt4')
         {
             $messages = array((object)array('role' => 'user', 'content' => 'test'));
             $result = $this->ai->converse($messages, array('maxTokens' => 1));
diff --git a/module/ai/lang/de.php b/module/ai/lang/de.php
index 4def0cad05..606dd5434d 100644
--- a/module/ai/lang/de.php
+++ b/module/ai/lang/de.php
@@ -433,12 +433,17 @@ $lang->ai->models->statusList['off'] = 'Disable';
 
 $lang->ai->models->typeList = array();
 $lang->ai->models->typeList['openai-gpt35'] = 'OpenAI / GPT-3.5';
+$lang->ai->models->typeList['openai-gpt4']  = 'OpenAI / GPT-4';
 $lang->ai->models->typeList['baidu-ernie']  = 'Baidu / ERNIE';
 
 $lang->ai->models->vendorList = new stdclass();
 $lang->ai->models->vendorList->{'openai-gpt35'} = array('openai' => 'OpenAI', 'azure' => 'Azure');
+$lang->ai->models->vendorList->{'openai-gpt4'}  = array('openai' => 'OpenAI', 'azure' => 'Azure');
 $lang->ai->models->vendorList->{'baidu-ernie'}  = array('baidu' => 'Baidu Qianfan LLM Platform');
 
+$lang->ai->models->vendorTips = new stdclass();
+$lang->ai->models->vendorTips->azure = 'OpenAI GPT version is specified during model deployment creation on Azure.';
+
 $lang->ai->models->proxyTypes = array();
 $lang->ai->models->proxyTypes['']       = 'No Proxy';
 $lang->ai->models->proxyTypes['socks5'] = 'SOCKS5';
diff --git a/module/ai/lang/en.php b/module/ai/lang/en.php
index 4def0cad05..606dd5434d 100644
--- a/module/ai/lang/en.php
+++ b/module/ai/lang/en.php
@@ -433,12 +433,17 @@ $lang->ai->models->statusList['off'] = 'Disable';
 
 $lang->ai->models->typeList = array();
 $lang->ai->models->typeList['openai-gpt35'] = 'OpenAI / GPT-3.5';
+$lang->ai->models->typeList['openai-gpt4']  = 'OpenAI / GPT-4';
 $lang->ai->models->typeList['baidu-ernie']  = 'Baidu / ERNIE';
 
 $lang->ai->models->vendorList = new stdclass();
 $lang->ai->models->vendorList->{'openai-gpt35'} = array('openai' => 'OpenAI', 'azure' => 'Azure');
+$lang->ai->models->vendorList->{'openai-gpt4'}  = array('openai' => 'OpenAI', 'azure' => 'Azure');
 $lang->ai->models->vendorList->{'baidu-ernie'}  = array('baidu' => 'Baidu Qianfan LLM Platform');
 
+$lang->ai->models->vendorTips = new stdclass();
+$lang->ai->models->vendorTips->azure = 'OpenAI GPT version is specified during model deployment creation on Azure.';
+
 $lang->ai->models->proxyTypes = array();
 $lang->ai->models->proxyTypes['']       = 'No Proxy';
 $lang->ai->models->proxyTypes['socks5'] = 'SOCKS5';
diff --git a/module/ai/lang/fr.php b/module/ai/lang/fr.php
index 4def0cad05..606dd5434d 100644
--- a/module/ai/lang/fr.php
+++ b/module/ai/lang/fr.php
@@ -433,12 +433,17 @@ $lang->ai->models->statusList['off'] = 'Disable';
 
 $lang->ai->models->typeList = array();
 $lang->ai->models->typeList['openai-gpt35'] = 'OpenAI / GPT-3.5';
+$lang->ai->models->typeList['openai-gpt4']  = 'OpenAI / GPT-4';
 $lang->ai->models->typeList['baidu-ernie']  = 'Baidu / ERNIE';
 
 $lang->ai->models->vendorList = new stdclass();
 $lang->ai->models->vendorList->{'openai-gpt35'} = array('openai' => 'OpenAI', 'azure' => 'Azure');
+$lang->ai->models->vendorList->{'openai-gpt4'}  = array('openai' => 'OpenAI', 'azure' => 'Azure');
 $lang->ai->models->vendorList->{'baidu-ernie'}  = array('baidu' => 'Baidu Qianfan LLM Platform');
 
+$lang->ai->models->vendorTips = new stdclass();
+$lang->ai->models->vendorTips->azure = 'OpenAI GPT version is specified during model deployment creation on Azure.';
+
 $lang->ai->models->proxyTypes = array();
 $lang->ai->models->proxyTypes['']       = 'No Proxy';
 $lang->ai->models->proxyTypes['socks5'] = 'SOCKS5';
diff --git a/module/ai/lang/zh-cn.php b/module/ai/lang/zh-cn.php
index 95c69903ad..bff67e99be 100644
--- a/module/ai/lang/zh-cn.php
+++ b/module/ai/lang/zh-cn.php
@@ -433,12 +433,17 @@ $lang->ai->models->statusList['off'] = '停用';
 
 $lang->ai->models->typeList = array();
 $lang->ai->models->typeList['openai-gpt35'] = 'OpenAI / GPT-3.5';
+$lang->ai->models->typeList['openai-gpt4']  = 'OpenAI / GPT-4';
 $lang->ai->models->typeList['baidu-ernie']  = '百度 / 文心一言';
 
 $lang->ai->models->vendorList = new stdclass();
 $lang->ai->models->vendorList->{'openai-gpt35'} = array('openai' => 'OpenAI', 'azure' => 'Azure');
+$lang->ai->models->vendorList->{'openai-gpt4'}  = array('openai' => 'OpenAI', 'azure' => 'Azure');
 $lang->ai->models->vendorList->{'baidu-ernie'}  = array('baidu' => '百度千帆大模型平台');
 
+$lang->ai->models->vendorTips = new stdclass();
+$lang->ai->models->vendorTips->azure = 'Azure 中 OpenAI GPT 版本 (3.5 或 4) 需要在创建资源时指定。';
+
 $lang->ai->models->proxyTypes = array();
 $lang->ai->models->proxyTypes['']       = '不使用代理';
 $lang->ai->models->proxyTypes['socks5'] = 'SOCKS5';
diff --git a/module/ai/model.php b/module/ai/model.php
index 076c769099..769afd328a 100644
--- a/module/ai/model.php
+++ b/module/ai/model.php
@@ -238,8 +238,12 @@ class aiModel extends model
     {
         $modelType = $this->config->ai->models[$this->modelConfig->type];
 
+        /* Models of the same type may differ in version, in which case they are stored as an array. */
+        $modelName = $this->config->ai->$modelType->model->$type;
+        if(is_array($modelName)) $modelName = $modelName[$this->modelConfig->type];
+
         $postData = new stdclass();
-        $postData->model = $this->config->ai->$modelType->model->$type;
+        $postData->model = $modelName;
 
         $data = static::standardizeParams($data);
 
diff --git a/module/ai/view/editmodel.html.php b/module/ai/view/editmodel.html.php
index 1d820f539c..f86ceaa9c2 100644
--- a/module/ai/view/editmodel.html.php
+++ b/module/ai/view/editmodel.html.php
@@ -16,36 +16,43 @@ $requiredFields = $config->ai->vendorList[$currentVendor]['requiredFields'];
 if(empty($requiredFields)) $requiredFields = array();
 js::set('vendorList', $config->ai->vendorList);
 js::set('vendorListLang', $lang->ai->models->vendorList);
+js::set('vendorTipsLang', $lang->ai->models->vendorTips);
 ?>
 <style>
   .required:after {right: -12px;}
 </style>
 <div id='mainContent' class='main-content'>
   <form id='mainForm' class='load-indicator main-form form-ajax' method='post'>
-    <table class='table table-form mw-800px'>
+    <table class='table table-form'>
       <tr>
         <th><?php echo $lang->ai->models->type;?></th>
         <td><?php echo html::select('type', $lang->ai->models->typeList, $modelConfig->type, "class='form-control chosen' required");?></td>
+        <td></td>
       </tr>
       <tr>
         <th><?php echo $lang->ai->models->vendor;?></th>
         <td><?php echo html::select('vendor', $lang->ai->models->vendorList->{empty($modelConfig->type) ? key($lang->ai->models->typeList) : $modelConfig->type}, $currentVendor, "class='form-control chosen' required");?></td>
+        <td id='vendor-tips' class='text-gray' style='display: none;'></td>
       </tr>
       <tr class="vendor-row <?php echo in_array('key', $requiredFields) ? '' : ' hidden'; ?>" data-vendor-field="key">
         <th><?php echo $lang->ai->models->key;?></th>
         <td><?php echo html::input('key', $modelConfig->key, "class='form-control' required");?></td>
+        <td></td>
       </tr>
       <tr class="vendor-row <?php echo in_array('secret', $requiredFields) ? '' : ' hidden'; ?>" data-vendor-field="secret">
         <th><?php echo $lang->ai->models->secret;?></th>
         <td><?php echo html::input('secret', $modelConfig->secret, "class='form-control' required");?></td>
+        <td></td>
       </tr>
       <tr class="vendor-row <?php echo in_array('resource', $requiredFields) ? '' : ' hidden'; ?>" data-vendor-field="resource">
         <th><?php echo $lang->ai->models->resource;?></th>
         <td><?php echo html::input('resource', empty($modelConfig->resource) ? '' : $modelConfig->resource, "class='form-control' required");?></td>
+        <td></td>
       </tr>
       <tr class="vendor-row <?php echo in_array('deployment', $requiredFields) ? '' : ' hidden'; ?>" data-vendor-field="deployment">
         <th><?php echo $lang->ai->models->deployment;?></th>
         <td><?php echo html::input('deployment', empty($modelConfig->deployment) ? '' : $modelConfig->deployment, "class='form-control' required");?></td>
+        <td></td>
       </tr>
       <tr>
         <th><?php echo $lang->ai->models->proxyType;?></th>
@@ -62,14 +69,17 @@ js::set('vendorListLang', $lang->ai->models->vendorList);
             </div>
           </div>
         </td>
+        <td></td>
       </tr>
       <tr>
         <th><?php echo $lang->ai->models->description;?></th>
         <td><?php echo html::textarea('description', $modelConfig->description, "class='form-control'");?></td>
+        <td></td>
       </tr>
       <tr>
         <th><?php echo $lang->statusAB;?></th>
         <td><?php echo html::radio('status', $lang->ai->models->statusList, empty($modelConfig->status) ? 'on' : $modelConfig->status);?></td>
+        <td></td>
       </tr>
       <tr>
         <td colspan='2' class='text-center'>
@@ -77,6 +87,7 @@ js::set('vendorListLang', $lang->ai->models->vendorList);
           <?php echo html::commonButton($lang->ai->models->testConnection, 'id="testConn"', 'btn btn-secondary btn-wide');?>
           <?php echo html::a(inlink('models', ""), $lang->goback, '', 'class="btn btn-wide"');?>
         </td>
+        <td></td>
       </tr>
     </table>
   </form>
@@ -96,6 +107,8 @@ $(function() {
     {
         var vendor = $(this).val();
         var requiredFields = vendorList[vendor]['requiredFields'];
+        const vendorTip = vendorTipsLang[vendor];
+        $('#vendor-tips').html(vendorTip ? vendorTip : '').toggle(!!vendorTip);
         $('.vendor-row').each(function()
         {
             var name = $(this).data('vendor-field');