diff --git a/frontend/src/pages/UsageLogs.tsx b/frontend/src/pages/UsageLogs.tsx
index b2221a4..00bf591 100644
--- a/frontend/src/pages/UsageLogs.tsx
+++ b/frontend/src/pages/UsageLogs.tsx
@@ -469,8 +469,8 @@ export function UsageLogs() {
                       <td className="px-2 py-3">
                         {/* <div className="font-medium">{formatCompactNumber(item.totalTokens)} tokens</div> */}
                         <div className="text-xs text-muted-foreground">
-                          输入 {formatCompactNumber(item.promptTokens)} / 输出{" "}
-                          {formatCompactNumber(item.completionTokens)}
+                          {formatCompactNumber(item.promptTokens)} / {formatCompactNumber(item.completionTokens)} /{" "}
+                          {formatCompactNumber(item.cachedTokens)}
                         </div>
                         <div className="mt-1 text-xs text-muted-foreground">
                           {formatCurrency(item.totalCost, displayDecimals)}
@@ -631,6 +631,7 @@ export function UsageLogs() {
                 <div className="grid gap-x-8 border-t border-border/60 pt-2 md:grid-cols-2">
                   <div className="divide-y divide-border/60">
                     <DetailRow label="总成本" value={formatCurrency(selectedItem.totalCost, displayDecimals)} />
+                    <DetailRow label="缓存成本" value={formatCurrency(selectedItem.cacheCost, displayDecimals)} />
                     <DetailRow label="延迟" value={formatDuration(selectedItem.latencyMs)} />
                     <DetailRow label="总 Tokens" value={formatCompactNumber(selectedItem.totalTokens)} />
                   </div>
diff --git a/frontend/src/types/index.ts b/frontend/src/types/index.ts
index 0b19b99..ca9931a 100644
--- a/frontend/src/types/index.ts
+++ b/frontend/src/types/index.ts
@@ -177,6 +177,7 @@ export interface AnalyticsEventItem {
   cachedTokens: number
   totalTokens: number
   totalCost: number
+  cacheCost: number
   latencyMs: number
   retryCount: number
   upstreamStatus: number
diff --git a/src/analytics/query.ts b/src/analytics/query.ts
index cee156f..0e3bc02 100644
--- a/src/analytics/query.ts
+++ b/src/analytics/query.ts
@@ -131,6 +131,7 @@ const DOUBLE_FIELDS = {
     upstreamStatus: "double8",
     successFlag: "double9",
     billingScale: "double10",
+    cacheCost: "double11",
 } as const;
 
 const BREAKDOWN_FIELDS: Record<AnalyticsBreakdownDimension, string> = {
@@ -197,6 +198,7 @@ const USAGE_LOG_NUMERIC_COLUMNS = [
     DOUBLE_FIELDS.upstreamStatus,
     DOUBLE_FIELDS.successFlag,
     DOUBLE_FIELDS.billingScale,
+    DOUBLE_FIELDS.cacheCost,
 ];
 
 const ALL_PROBED_COLUMNS = [
@@ -538,16 +540,19 @@ const buildDoubleSelect = (
         : `0 AS ${alias}`;
 };
 
-const buildNormalizedTotalCostExpression = (support: DatasetColumnSupport): string => {
-    if (!isColumnAvailable(support, DOUBLE_FIELDS.totalCost)) {
+const buildNormalizedCostExpression = (
+    support: DatasetColumnSupport,
+    costField: string
+): string => {
+    if (!isColumnAvailable(support, costField)) {
         return "0";
     }
 
     if (!isColumnAvailable(support, DOUBLE_FIELDS.billingScale)) {
-        return `${DOUBLE_FIELDS.totalCost} * ${LEGACY_TO_RAW_FACTOR}`;
+        return `${costField} * ${LEGACY_TO_RAW_FACTOR}`;
     }
 
-    return `if(${DOUBLE_FIELDS.billingScale} > 0, ${DOUBLE_FIELDS.totalCost} * (${BILLING_RAW_SCALE} / ${DOUBLE_FIELDS.billingScale}), ${DOUBLE_FIELDS.totalCost} * ${LEGACY_TO_RAW_FACTOR})`;
+    return `if(${DOUBLE_FIELDS.billingScale} > 0, ${costField} * (${BILLING_RAW_SCALE} / ${DOUBLE_FIELDS.billingScale}), ${costField} * ${LEGACY_TO_RAW_FACTOR})`;
 };
 
 const hasAnyLegacyLogSchema = (support: DatasetColumnSupport): boolean => {
@@ -624,7 +629,7 @@ export const queryUsageOverview = async (
     const { range, config } = getRangeConfig(requestedRange);
     const dataset = getDatasetName(c);
     const columnSupport = await getDatasetColumnSupport(c, dataset, buildRangeWhereClause(config));
-    const normalizedTotalCostExpression = buildNormalizedTotalCostExpression(columnSupport);
+    const normalizedTotalCostExpression = buildNormalizedCostExpression(columnSupport, DOUBLE_FIELDS.totalCost);
     const rows = await runAnalyticsQuery<Record<string, unknown>>(c, `
 SELECT
     sum(_sample_interval) AS requests,
@@ -666,7 +671,7 @@ export const queryUsageTrend = async (
     const dataset = getDatasetName(c);
     const trendWindow = buildTrendWindow(range, config);
     const columnSupport = await getDatasetColumnSupport(c, dataset, trendWindow.whereClause);
-    const normalizedTotalCostExpression = buildNormalizedTotalCostExpression(columnSupport);
+    const normalizedTotalCostExpression = buildNormalizedCostExpression(columnSupport, DOUBLE_FIELDS.totalCost);
     const rows = await runAnalyticsQuery<Record<string, unknown>>(c, `
 SELECT
     toUnixTimestamp(${buildBucketClause(config)}) AS bucket_ts,
@@ -716,7 +721,7 @@ export const queryUsageBreakdown = async (
     const dataset = getDatasetName(c);
     const dimensionField = BREAKDOWN_FIELDS[dimension];
     const columnSupport = await getDatasetColumnSupport(c, dataset, buildRangeWhereClause(config));
-    const normalizedTotalCostExpression = buildNormalizedTotalCostExpression(columnSupport);
+    const normalizedTotalCostExpression = buildNormalizedCostExpression(columnSupport, DOUBLE_FIELDS.totalCost);
     const rows = await runAnalyticsQuery<Record<string, unknown>>(c, `
 SELECT
     ${dimensionField} AS label,
@@ -785,6 +790,8 @@ WHERE ${buildRangeWhereClause(config)}
 
     const columnSupport = await getDatasetColumnSupport(c, dataset, buildRangeWhereClause(config));
     const compatibilityWarning = getUsageLogCompatibilityWarning(columnSupport);
+    const normalizedTotalCostExpression = buildNormalizedCostExpression(columnSupport, DOUBLE_FIELDS.totalCost);
+    const normalizedCacheCostExpression = buildNormalizedCostExpression(columnSupport, DOUBLE_FIELDS.cacheCost);
     const rows = await runAnalyticsQuery<Record<string, unknown>>(c, `
 SELECT
     timestamp,
@@ -812,7 +819,8 @@ SELECT
     ${buildDoubleSelect(columnSupport, DOUBLE_FIELDS.completionTokens, "completion_tokens")},
     ${buildDoubleSelect(columnSupport, DOUBLE_FIELDS.cachedTokens, "cached_tokens")},
     ${buildDoubleSelect(columnSupport, DOUBLE_FIELDS.totalTokens, "total_tokens")},
-    ${buildNormalizedTotalCostExpression(columnSupport)} AS total_cost,
+    ${normalizedTotalCostExpression} AS total_cost,
+    ${normalizedCacheCostExpression} AS cache_cost,
     ${buildDoubleSelect(columnSupport, DOUBLE_FIELDS.latencyMs, "latency_ms")},
     ${buildDoubleSelect(columnSupport, DOUBLE_FIELDS.retryCount, "retry_count")},
     ${buildDoubleSelect(columnSupport, DOUBLE_FIELDS.upstreamStatus, "upstream_status")}
@@ -853,6 +861,7 @@ LIMIT ${limit}
             cachedTokens: toNumber(row.cached_tokens),
             totalTokens: toNumber(row.total_tokens),
             totalCost: toNumber(row.total_cost),
+            cacheCost: toNumber(row.cache_cost),
             latencyMs: toNumber(row.latency_ms),
             retryCount: toNumber(row.retry_count),
             upstreamStatus: toNumber(row.upstream_status),
@@ -958,6 +967,8 @@ WHERE ${whereClause}
         };
     }
 
+    const normalizedTotalCostExpression = buildNormalizedCostExpression(columnSupport, DOUBLE_FIELDS.totalCost);
+    const normalizedCacheCostExpression = buildNormalizedCostExpression(columnSupport, DOUBLE_FIELDS.cacheCost);
     const rows = await runAnalyticsQuery<Record<string, unknown>>(c, `
 SELECT
     timestamp,
@@ -985,7 +996,8 @@ SELECT
     ${buildDoubleSelect(columnSupport, DOUBLE_FIELDS.completionTokens, "completion_tokens")},
     ${buildDoubleSelect(columnSupport, DOUBLE_FIELDS.cachedTokens, "cached_tokens")},
     ${buildDoubleSelect(columnSupport, DOUBLE_FIELDS.totalTokens, "total_tokens")},
-    ${buildNormalizedTotalCostExpression(columnSupport)} AS total_cost,
+    ${normalizedTotalCostExpression} AS total_cost,
+    ${normalizedCacheCostExpression} AS cache_cost,
     ${buildDoubleSelect(columnSupport, DOUBLE_FIELDS.latencyMs, "latency_ms")},
     ${buildDoubleSelect(columnSupport, DOUBLE_FIELDS.retryCount, "retry_count")},
     ${buildDoubleSelect(columnSupport, DOUBLE_FIELDS.upstreamStatus, "upstream_status")}
@@ -1038,6 +1050,7 @@ OFFSET ${offset}
             cachedTokens: toNumber(row.cached_tokens),
             totalTokens: toNumber(row.total_tokens),
             totalCost: toNumber(row.total_cost),
+            cacheCost: toNumber(row.cache_cost),
             latencyMs: toNumber(row.latency_ms),
             retryCount: toNumber(row.retry_count),
             upstreamStatus: toNumber(row.upstream_status),
diff --git a/src/analytics/usage-logger.ts b/src/analytics/usage-logger.ts
index fec8252..a172ec4 100644
--- a/src/analytics/usage-logger.ts
+++ b/src/analytics/usage-logger.ts
@@ -27,6 +27,7 @@ export type UsageLogContext = {
 
 type UsageCostResult = {
     totalCost: number;
+    cacheCost: number;
 }
 
 type FailureLogParams = {
@@ -188,7 +189,7 @@ export const buildUsageRequestMetadata = (c: Context<HonoCustomType>) => {
 const buildCommonPoint = (
     context: UsageLogContext,
     usage: Usage,
-    totalCost: number,
+    costResult: UsageCostResult,
     result: "success" | "failure",
     errorCode: string,
     errorSummary: string
@@ -230,12 +231,13 @@ const buildCommonPoint = (
             completionTokens,
             cachedTokens,
             totalTokens,
-            safeNumber(totalCost),
+            safeNumber(costResult.totalCost),
             Math.max(0, Date.now() - context.startedAt),
             safeNumber(context.trackingState.retryCount),
             upstreamStatus,
             result === "success" ? 1 : 0,
             BILLING_RAW_SCALE,
+            safeNumber(costResult.cacheCost),
         ],
     };
 };
@@ -246,7 +248,7 @@ export const writeUsageSuccessEvent = (
     usage: Usage,
     costResult: UsageCostResult
 ) => {
-    writeDataPoint(c, buildCommonPoint(context, usage, costResult.totalCost, "success", "", ""));
+    writeDataPoint(c, buildCommonPoint(context, usage, costResult, "success", "", ""));
 };
 
 export const writeUsageFailureEvent = (
@@ -259,7 +261,10 @@ export const writeUsageFailureEvent = (
         buildCommonPoint(
             context,
             {},
-            0,
+            {
+                totalCost: 0,
+                cacheCost: 0,
+            },
             "failure",
             params.errorCode,
             params.errorSummary || context.trackingState.errorSummary || ""