diff --git a/common/chat.cpp b/common/chat.cpp
index 34e6152164..78ceecd02b 100644
--- a/common/chat.cpp
+++ b/common/chat.cpp
@@ -1314,8 +1314,15 @@ static common_chat_params common_chat_params_init_deepseek_r1(const common_chat_
 }
 
 static common_chat_params common_chat_params_init_deepseek_v3_1(const common_chat_template & tmpl, const struct templates_params & inputs) {
-    // For now, use the same implementation as R1
-    return common_chat_params_init_deepseek_r1(tmpl, inputs);
+    common_chat_params data;
+    auto prompt = apply(tmpl, inputs);
+    data.prompt = prompt;
+    data.format = COMMON_CHAT_FORMAT_DEEPSEEK_V3_1;
+    
+    // For V3.1, we need to handle thinking mode differently
+    // The template should handle the thinking mode logic
+    
+    return data;
 }
 
 static void common_chat_parse_deepseek_r1(common_chat_msg_parser & builder) {
diff --git a/tests/test-chat-parser.cpp b/tests/test-chat-parser.cpp
index 59e44e07d2..a81761f321 100644
--- a/tests/test-chat-parser.cpp
+++ b/tests/test-chat-parser.cpp
@@ -152,6 +152,32 @@ static void test_regex() {
   }
 }
 
+static void test_deepseek_v3_1() {
+  // Test DeepSeek V3.1 parsing - reasoning content followed by "</think>" and then regular content
+  {
+    common_chat_syntax syntax = {
+        /* .format = */ COMMON_CHAT_FORMAT_DEEPSEEK_V3_1,
+        /* .reasoning_format = */ COMMON_REASONING_FORMAT_DEEPSEEK,
+        /* .reasoning_in_content = */ false,
+        /* .thinking_forced_open = */ false,
+        /* .parse_tool_calls = */ true,
+    };
+    common_chat_msg_parser builder("REASONING</think><function=finish>\n<parameter=message>ok
+static void test_deepseek_v3_1() {
+  // Test DeepSeek V3.1 parsing - reasoning content followed by "</think>" and then regular content
+  {
+    common_chat_syntax syntax = {
+        /* .format = */ COMMON_CHAT_FORMAT_DEEPSEEK_V3_1,
+        /* .reasoning_format = */ COMMON_REASONING_FORMAT_DEEPSEEK,
+        /* .reasoning_in_content = */ false,
+        /* .thinking_forced_open = */ false,
+        /* .parse_tool_calls = */ true,
+    };
+    common_chat_msg_parser builder("REASONING</think><function=finish>\n<parameter=message>ok
+static void test_deepseek_v3_1() {
+  // Test DeepSeek V3.1 parsing - reasoning content followed by "</think>" and then regular content
+  {
+    common_chat_msg_parser builder("REASONING</think><function=finish>\n<parameter=message>ok
 const std::vector<std::string> barely_healable_jsons = {
   "{",
   "{\"",
diff --git a/tools/server/server.cpp b/tools/server/server.cpp
index 35b060674b..19e5d4d484 100644
--- a/tools/server/server.cpp
+++ b/tools/server/server.cpp
@@ -774,6 +774,9 @@ struct server_task_result_cmpl_final : server_task_result {
         if (!stream && !probs_output.empty()) {
             res["completion_probabilities"] = completion_token_output::probs_vector_to_json(probs_output, post_sampling_probs);
         }
+        if (!oaicompat_msg.reasoning_content.empty()) {
+            res["reasoning_content"] = oaicompat_msg.reasoning_content;
+        }
         return response_fields.empty() ? res : json_get_nested_values(response_fields, res);
     }