diff --git a/dashboard/src/components/chat/ReasoningSidebar.vue b/dashboard/src/components/chat/ReasoningSidebar.vue
index 93cc0ed06..a20a4bb89 100644
--- a/dashboard/src/components/chat/ReasoningSidebar.vue
+++ b/dashboard/src/components/chat/ReasoningSidebar.vue
@@ -2,7 +2,7 @@
   <transition name="slide-left">
     <aside v-if="modelValue" class="reasoning-sidebar">
       <div class="reasoning-sidebar-header">
-        <div class="reasoning-sidebar-title">{{ tm("reasoning.thinking") }}</div>
+        <div class="reasoning-sidebar-title">{{ reasoningTitle }}</div>
         <v-btn icon="mdi-close" size="small" variant="text" @click="close" />
       </div>
 
@@ -14,7 +14,7 @@
           :is-dark="isDark"
         />
         <div v-else class="reasoning-sidebar-empty">
-          {{ tm("reasoning.thinking") }}
+          {{ reasoningTitle }}
         </div>
       </div>
     </aside>
@@ -22,11 +22,16 @@
 </template>
 
 <script setup lang="ts">
-import type { MessagePart } from "@/composables/useMessages";
+import { computed } from "vue";
+import {
+  reasoningActivityCounts,
+  reasoningActivityTitle,
+  type MessagePart,
+} from "@/composables/useMessages";
 import { useModuleI18n } from "@/i18n/composables";
 import ReasoningTimeline from "@/components/chat/message_list_comps/ReasoningTimeline.vue";
 
-defineProps<{
+const props = defineProps<{
   modelValue: boolean;
   parts: MessagePart[];
   reasoning?: string;
@@ -39,6 +44,14 @@ const emit = defineEmits<{
 
 const { tm } = useModuleI18n("features/chat");
 
+const activityCounts = computed(() =>
+  reasoningActivityCounts(props.parts, props.reasoning || ""),
+);
+
+const reasoningTitle = computed(() =>
+  reasoningActivityTitle(activityCounts.value, tm),
+);
+
 function close() {
   emit("update:modelValue", false);
 }
diff --git a/dashboard/src/components/chat/message_list_comps/ReasoningBlock.vue b/dashboard/src/components/chat/message_list_comps/ReasoningBlock.vue
index a5b834b26..d709182fc 100644
--- a/dashboard/src/components/chat/message_list_comps/ReasoningBlock.vue
+++ b/dashboard/src/components/chat/message_list_comps/ReasoningBlock.vue
@@ -7,7 +7,7 @@
       @click="handlePrimaryAction"
     >
       <span class="reasoning-title">
-        {{ tm("reasoning.thinking") }}
+        {{ reasoningTitle }}
       </span>
       <v-icon
         size="22"
@@ -40,7 +40,11 @@
 
 <script setup lang="ts">
 import { computed, onBeforeUnmount, ref, watch } from "vue";
-import type { MessagePart } from "@/composables/useMessages";
+import {
+  reasoningActivityCounts,
+  reasoningActivityTitle,
+  type MessagePart,
+} from "@/composables/useMessages";
 import { useModuleI18n } from "@/i18n/composables";
 import ReasoningTimeline from "@/components/chat/message_list_comps/ReasoningTimeline.vue";
 
@@ -75,6 +79,14 @@ const renderParts = computed<MessagePart[]>(() => {
 
 const openInSidebar = computed(() => Boolean(props.openInSidebar));
 
+const activityCounts = computed(() =>
+  reasoningActivityCounts(renderParts.value, props.reasoning || ""),
+);
+
+const reasoningTitle = computed(() =>
+  reasoningActivityTitle(activityCounts.value, tm),
+);
+
 const thinkingText = computed(() =>
   renderParts.value
     .filter((part) => part.type === "think")
@@ -214,14 +226,11 @@ onBeforeUnmount(() => {
   color: rgba(var(--v-theme-on-surface), 0.88);
 }
 
-.reasoning-header--trigger {
-  align-items: flex-start;
-}
-
 .reasoning-icon {
   color: currentcolor;
   transition: transform 0.2s ease;
   flex-shrink: 0;
+  align-self: center;
 }
 
 .reasoning-title {
diff --git a/dashboard/src/composables/useMessages.ts b/dashboard/src/composables/useMessages.ts
index 51e950c11..6f12aaae8 100644
--- a/dashboard/src/composables/useMessages.ts
+++ b/dashboard/src/composables/useMessages.ts
@@ -794,6 +794,44 @@ export function extractReasoningText(
   return text || legacyReasoning;
 }
 
+export function reasoningActivityCounts(
+  parts: MessagePart[] | unknown,
+  legacyReasoning = "",
+) {
+  const normalizedParts = Array.isArray(parts)
+    ? parts
+    : normalizeMessageParts(parts, legacyReasoning);
+  let thinkCount = 0;
+  let toolCount = 0;
+
+  for (const part of normalizedParts) {
+    if (part.type === "think" && String(part.think || "").trim()) {
+      thinkCount += 1;
+    }
+    if (part.type === "tool_call" && Array.isArray(part.tool_calls)) {
+      toolCount += part.tool_calls.length;
+    }
+  }
+
+  return { thinkCount, toolCount };
+}
+
+export function reasoningActivityTitle(
+  counts: ReturnType<typeof reasoningActivityCounts>,
+  tm: (key: string, params?: Record<string, string | number>) => string,
+) {
+  return [
+    counts.thinkCount > 0
+      ? tm("reasoning.thinkSummary", { count: counts.thinkCount })
+      : "",
+    counts.toolCount > 0
+      ? tm("reasoning.toolSummary", { count: counts.toolCount })
+      : "",
+  ]
+    .filter(Boolean)
+    .join(tm("reasoning.summarySeparator")) || tm("reasoning.thinking");
+}
+
 export function thinkingParts(content: ChatContent): MessagePart[] {
   const firstThinkingBlock = messageBlocks(content).find(
     (block) => block.kind === "thinking",
diff --git a/dashboard/src/i18n/locales/en-US/features/chat.json b/dashboard/src/i18n/locales/en-US/features/chat.json
index fbe4fb31c..2eccb41ba 100644
--- a/dashboard/src/i18n/locales/en-US/features/chat.json
+++ b/dashboard/src/i18n/locales/en-US/features/chat.json
@@ -114,6 +114,9 @@
   },
   "reasoning": {
     "thinking": "Thinking Process",
+    "summarySeparator": ", ",
+    "thinkSummary": "Thought {count} times",
+    "toolSummary": "used {count} tools",
     "think": "Thinking",
     "toolUsed": "Using Tool"
   },
diff --git a/dashboard/src/i18n/locales/ru-RU/features/chat.json b/dashboard/src/i18n/locales/ru-RU/features/chat.json
index 0837d9d55..fe0958e7d 100644
--- a/dashboard/src/i18n/locales/ru-RU/features/chat.json
+++ b/dashboard/src/i18n/locales/ru-RU/features/chat.json
@@ -114,6 +114,9 @@
   },
   "reasoning": {
     "thinking": "Рассуждение",
+    "summarySeparator": ", ",
+    "thinkSummary": "Размышлений: {count}",
+    "toolSummary": "использований инструментов: {count}",
     "think": "Размышление",
     "toolUsed": "Использование инструмента"
   },
diff --git a/dashboard/src/i18n/locales/zh-CN/features/chat.json b/dashboard/src/i18n/locales/zh-CN/features/chat.json
index 59cdaad97..803283bc4 100644
--- a/dashboard/src/i18n/locales/zh-CN/features/chat.json
+++ b/dashboard/src/i18n/locales/zh-CN/features/chat.json
@@ -114,6 +114,9 @@
   },
   "reasoning": {
     "thinking": "思考过程",
+    "summarySeparator": "，",
+    "thinkSummary": "思考了 {count} 次",
+    "toolSummary": "使用了 {count} 次工具",
     "think": "思考",
     "toolUsed": "使用工具"
   },