diff --git a/src/components/usage/ModelStatsCard.tsx b/src/components/usage/ModelStatsCard.tsx
index 859fa16..763cf10 100644
--- a/src/components/usage/ModelStatsCard.tsx
+++ b/src/components/usage/ModelStatsCard.tsx
@@ -6,6 +6,8 @@ import styles from '@/pages/UsagePage.module.scss';
 export interface ModelStat {
   model: string;
   requests: number;
+  successCount: number;
+  failureCount: number;
   tokens: number;
   cost: number;
 }
@@ -38,7 +40,15 @@ export function ModelStatsCard({ modelStats, loading, hasPrices }: ModelStatsCar
               {modelStats.map((stat) => (
                 <tr key={stat.model}>
                   <td className={styles.modelCell}>{stat.model}</td>
-                  <td>{stat.requests.toLocaleString()}</td>
+                  <td>
+                    <span className={styles.requestCountCell}>
+                      <span>{stat.requests.toLocaleString()}</span>
+                      <span className={styles.requestBreakdown}>
+                        (<span className={styles.statSuccess}>{stat.successCount.toLocaleString()}</span>{' '}
+                        <span className={styles.statFailure}>{stat.failureCount.toLocaleString()}</span>)
+                      </span>
+                    </span>
+                  </td>
                   <td>{formatTokensInMillions(stat.tokens)}</td>
                   {hasPrices && <td>{stat.cost > 0 ? formatUsd(stat.cost) : '--'}</td>}
                 </tr>
diff --git a/src/pages/UsagePage.module.scss b/src/pages/UsagePage.module.scss
index 962913a..bce9d85 100644
--- a/src/pages/UsagePage.module.scss
+++ b/src/pages/UsagePage.module.scss
@@ -456,6 +456,18 @@
   word-break: break-all;
 }
 
+.requestCountCell {
+  display: inline-flex;
+  align-items: baseline;
+  gap: 6px;
+  font-variant-numeric: tabular-nums;
+}
+
+.requestBreakdown {
+  color: var(--text-secondary);
+  white-space: nowrap;
+}
+
 // Pricing Section (80%比例)
 .pricingSection {
   display: flex;
diff --git a/src/utils/usage.ts b/src/utils/usage.ts
index a01e3c4..48bf20c 100644
--- a/src/utils/usage.ts
+++ b/src/utils/usage.ts
@@ -579,6 +579,8 @@ export function getApiStats(usageData: any, modelPrices: Record<string, ModelPri
 export function getModelStats(usageData: any, modelPrices: Record<string, ModelPrice>): Array<{
   model: string;
   requests: number;
+  successCount: number;
+  failureCount: number;
   tokens: number;
   cost: number;
 }> {
@@ -586,20 +588,39 @@ export function getModelStats(usageData: any, modelPrices: Record<string, ModelP
     return [];
   }
 
-  const modelMap = new Map<string, { requests: number; tokens: number; cost: number }>();
+  const modelMap = new Map<string, { requests: number; successCount: number; failureCount: number; tokens: number; cost: number }>();
 
   Object.values(usageData.apis as Record<string, any>).forEach(apiData => {
     const models = apiData?.models || {};
     Object.entries(models as Record<string, any>).forEach(([modelName, modelData]) => {
-      const existing = modelMap.get(modelName) || { requests: 0, tokens: 0, cost: 0 };
+      const existing = modelMap.get(modelName) || { requests: 0, successCount: 0, failureCount: 0, tokens: 0, cost: 0 };
       existing.requests += modelData.total_requests || 0;
       existing.tokens += modelData.total_tokens || 0;
 
+      const details = Array.isArray(modelData.details) ? modelData.details : [];
+
       const price = modelPrices[modelName];
-      if (price) {
-        const details = Array.isArray(modelData.details) ? modelData.details : [];
+
+      const hasExplicitCounts =
+        typeof modelData.success_count === 'number' || typeof modelData.failure_count === 'number';
+      if (hasExplicitCounts) {
+        existing.successCount += Number(modelData.success_count) || 0;
+        existing.failureCount += Number(modelData.failure_count) || 0;
+      }
+
+      if (details.length > 0 && (!hasExplicitCounts || price)) {
         details.forEach((detail: any) => {
-          existing.cost += calculateCost({ ...detail, __modelName: modelName }, modelPrices);
+          if (!hasExplicitCounts) {
+            if (detail?.failed === true) {
+              existing.failureCount += 1;
+            } else {
+              existing.successCount += 1;
+            }
+          }
+
+          if (price) {
+            existing.cost += calculateCost({ ...detail, __modelName: modelName }, modelPrices);
+          }
         });
       }
       modelMap.set(modelName, existing);