diff --git a/app/constant.ts b/app/constant.ts
index ce00d063ebd..14c8c78e5f3 100644
--- a/app/constant.ts
+++ b/app/constant.ts
@@ -393,6 +393,7 @@ You are an AI assistant with access to system tools. Your role is to help users
 
 export const SUMMARIZE_MODEL = "gpt-4o-mini";
 export const GEMINI_SUMMARIZE_MODEL = "gemini-pro";
+export const DEEPSEEK_SUMMARIZE_MODEL = "deepseek-chat";
 
 export const KnowledgeCutOffDate: Record<string, string> = {
   default: "2021-09",
@@ -561,7 +562,7 @@ const iflytekModels = [
   "4.0Ultra",
 ];
 
-const deepseekModels = ["deepseek-chat", "deepseek-coder"];
+const deepseekModels = ["deepseek-chat", "deepseek-coder", "deepseek-reasoner"];
 
 const xAIModes = ["grok-beta"];
 
diff --git a/app/store/chat.ts b/app/store/chat.ts
index e152c7522f0..87c1a8beba0 100644
--- a/app/store/chat.ts
+++ b/app/store/chat.ts
@@ -20,6 +20,7 @@ import {
   DEFAULT_MODELS,
   DEFAULT_SYSTEM_TEMPLATE,
   GEMINI_SUMMARIZE_MODEL,
+  DEEPSEEK_SUMMARIZE_MODEL,
   KnowledgeCutOffDate,
   MCP_SYSTEM_TEMPLATE,
   MCP_TOOLS_TEMPLATE,
@@ -143,7 +144,10 @@ function getSummarizeModel(
   }
   if (currentModel.startsWith("gemini")) {
     return [GEMINI_SUMMARIZE_MODEL, ServiceProvider.Google];
+  } else if (currentModel.startsWith("deepseek-")) {
+    return [DEEPSEEK_SUMMARIZE_MODEL, ServiceProvider.DeepSeek];
   }
+
   return [currentModel, providerName];
 }