diff --git a/public/index.html b/public/index.html
index 1a671ad01..de093b58b 100644
--- a/public/index.html
+++ b/public/index.html
@@ -685,7 +685,7 @@
                                         </div>
                                     </div>
                                 </div>
-                                <div class="range-block" data-source="openai,openrouter,custom,cohere,perplexity,groq">
+                                <div class="range-block" data-source="openai,openrouter,custom,cohere,perplexity,groq,mistralai">
                                     <div class="range-block-title" data-i18n="Frequency Penalty">
                                         Frequency Penalty
                                     </div>
@@ -698,7 +698,7 @@
                                         </div>
                                     </div>
                                 </div>
-                                <div class="range-block" data-source="openai,openrouter,custom,cohere,perplexity,groq">
+                                <div class="range-block" data-source="openai,openrouter,custom,cohere,perplexity,groq,mistralai">
                                     <div class="range-block-title" data-i18n="Presence Penalty">
                                         Presence Penalty
                                     </div>
diff --git a/src/endpoints/backends/chat-completions.js b/src/endpoints/backends/chat-completions.js
index 1e6cfe251..fe258cfc9 100644
--- a/src/endpoints/backends/chat-completions.js
+++ b/src/endpoints/backends/chat-completions.js
@@ -477,6 +477,8 @@ async function sendMistralAIRequest(request, response) {
             'messages': messages,
             'temperature': request.body.temperature,
             'top_p': request.body.top_p,
+            'frequency_penalty': request.body.frequency_penalty,
+            'presence_penalty': request.body.presence_penalty,
             'max_tokens': request.body.max_tokens,
             'stream': request.body.stream,
             'safe_prompt': request.body.safe_prompt,