diff --git a/public/index.html b/public/index.html
index d3d0a6b64..c87bf7f2d 100644
--- a/public/index.html
+++ b/public/index.html
@@ -2895,6 +2895,16 @@
                             <h4 data-i18n="Perplexity Model">Perplexity Model</h4>
                             <select id="model_perplexity_select">
                                 <optgroup label="Perplexity Models">
+                                    <option value="llama-3.1-sonar-small-128k-online">llama-3.1-sonar-small-128k-online</option>
+                                    <option value="llama-3.1-sonar-small-128k-chat">llama-3.1-sonar-small-128k-chat</option>
+                                    <option value="llama-3.1-sonar-large-128k-online">llama-3.1-sonar-large-128k-online</option>
+                                    <option value="llama-3.1-sonar-large-128k-chat">llama-3.1-sonar-large-128k-chat</option>
+                                </optgroup>
+                                <optgroup label="Open-Source Models">
+                                    <option value="llama-3.1-8b-instruct">llama-3.1-8b-instruct</option>
+                                    <option value="llama-3.1-70b-instruct">llama-3.1-70b-instruct</option>
+                                </optgroup>
+                                <optgroup label="Deprecated Models">
                                     <option value="llama-3-sonar-small-32k-chat">llama-3-sonar-small-32k-chat</option>
                                     <option value="llama-3-sonar-small-32k-online">llama-3-sonar-small-32k-online</option>
                                     <option value="llama-3-sonar-large-32k-chat">llama-3-sonar-large-32k-chat</option>
@@ -2903,8 +2913,6 @@
                                     <option value="sonar-small-online">sonar-small-online</option>
                                     <option value="sonar-medium-chat">sonar-medium-chat</option>
                                     <option value="sonar-medium-online">sonar-medium-online</option>
-                                </optgroup>
-                                <optgroup label="Open-Source Models">
                                     <option value="llama-3-8b-instruct">llama-3-8b-instruct</option>
                                     <option value="llama-3-70b-instruct">llama-3-70b-instruct</option>
                                     <option value="mistral-7b-instruct">mistral-7b-instruct (v0.2)</option>
diff --git a/public/scripts/openai.js b/public/scripts/openai.js
index f1d3c1814..892838f37 100644
--- a/public/scripts/openai.js
+++ b/public/scripts/openai.js
@@ -264,7 +264,7 @@ const default_settings = {
     ai21_model: 'j2-ultra',
     mistralai_model: 'mistral-medium-latest',
     cohere_model: 'command-r',
-    perplexity_model: 'llama-3-70b-instruct',
+    perplexity_model: 'llama-3.1-70b-instruct',
     groq_model: 'llama3-70b-8192',
     zerooneai_model: 'yi-large',
     custom_model: '',
@@ -344,7 +344,7 @@ const oai_settings = {
     ai21_model: 'j2-ultra',
     mistralai_model: 'mistral-medium-latest',
     cohere_model: 'command-r',
-    perplexity_model: 'llama-3-70b-instruct',
+    perplexity_model: 'llama-3.1-70b-instruct',
     groq_model: 'llama3-70b-8192',
     zerooneai_model: 'yi-large',
     custom_model: '',
@@ -4201,6 +4201,11 @@ async function onModelChange() {
         if (oai_settings.max_context_unlocked) {
             $('#openai_max_context').attr('max', unlocked_max);
         }
+        else if (oai_settings.perplexity_model.includes('llama-3.1')) {
+            const isOnline = oai_settings.perplexity_model.includes('online');
+            const contextSize = isOnline ? 128 * 1024 - 4000 : 128 * 1024;
+            $('#openai_max_context').attr('max', contextSize);
+        }
         else if (['llama-3-sonar-small-32k-chat', 'llama-3-sonar-large-32k-chat'].includes(oai_settings.perplexity_model)) {
             $('#openai_max_context').attr('max', max_32k);
         }