diff --git a/cost.ts b/cost.ts
index 4a509ba..912ffe5 100644
--- a/cost.ts
+++ b/cost.ts
@@ -166,7 +166,7 @@ export function getCostConfig(model: string): CostConfig {
    * Check Helicone costs with operator matching
    */
   const exactMatch = heliconeCosts.get(normalizedModel);
-  if (exactMatch && exactMatch.operator === "equals") {
+  if (exactMatch?.operator === "equals") {
     return exactMatch.config;
   }
 
@@ -229,5 +229,5 @@ export function calculateCost(
     (completion_tokens / 1_000_000) * cost.output;
 
   const total = inputCost + cachedCost + outputCost;
-  return total > 0 ? Number(total.toFixed(6)) : null;
+  return total > 0 ? Number.parseFloat(total.toFixed(6)) : null;
 }
diff --git a/dashboard/app/api/metrics/route.ts b/dashboard/app/api/metrics/route.ts
index d14b774..d5e552d 100644
--- a/dashboard/app/api/metrics/route.ts
+++ b/dashboard/app/api/metrics/route.ts
@@ -97,10 +97,10 @@ export async function GET(request: NextRequest) {
           summary: {
             totalRequests: Number.parseInt(summary.total_requests ?? '0'),
             totalTokens: Number.parseInt(summary.total_tokens_used ?? '0'),
-            totalCost: parseFloat(summary.total_cost ?? '0'),
-            avgResponseTime: parseFloat(summary.avg_response_time ?? '0'),
-            uniqueModels: Number.parseInt(summary),
-            uniqueClients: parseInt(summary.unique_clients ?? '0'),
+            totalCost: Number.parseFloat(summary.total_cost ?? '0'),
+            avgResponseTime: Number.parseFloat(summary.avg_response_time ?? '0'),
+            uniqueModels: Number.parseInt(summary.unique_models ?? '0'),
+            uniqueClients: Number.parseInt(summary.unique_clients ?? '0'),
           },
           recentRequests,
           modelBreakdown,
diff --git a/dashboard/components/ModelBreakdown.tsx b/dashboard/components/ModelBreakdown.tsx
index 9de3074..bdb7a8c 100644
--- a/dashboard/components/ModelBreakdown.tsx
+++ b/dashboard/components/ModelBreakdown.tsx
@@ -42,8 +42,8 @@ export default function ModelBreakdown({ models }: ModelBreakdownProps) {
                 </td>
                 <td style={styles.td}>{Number.parseInt(model.request_count).toLocaleString()}</td>
                 <td style={styles.td}>{Number.parseInt(model.total_tokens).toLocaleString()}</td>
-                <td style={styles.td}>${parseFloat(model.total_cost).toFixed(4)}</td>
-                <td style={styles.td}>{Math.round(parseFloat(model.avg_response_time))}ms</td>
+                <td style={styles.td}>${Number.parseFloat(model.total_cost).toFixed(4)}</td>
+                <td style={styles.td}>{Math.round(Number.parseFloat(model.avg_response_time))}ms</td>
               </tr>
             ))}
           </tbody>
diff --git a/dashboard/components/RecentRequests.tsx b/dashboard/components/RecentRequests.tsx
index 0fe57eb..dc9990a 100644
--- a/dashboard/components/RecentRequests.tsx
+++ b/dashboard/components/RecentRequests.tsx
@@ -60,7 +60,7 @@ export default function RecentRequests({ requests }: RecentRequestsProps) {
                       </small>
                     </div>
                   </td>
-                  <td style={styles.td}>${parseFloat(req.total_cost).toFixed(4)}</td>
+                  <td style={styles.td}>${Number.parseFloat(req.total_cost).toFixed(4)}</td>
                   <td style={styles.td}>{req.response_time}ms</td>
                   <td style={styles.td}>
                     <span
diff --git a/dashboard/components/TrendsChart.tsx b/dashboard/components/TrendsChart.tsx
index f9a6389..80d6b7b 100644
--- a/dashboard/components/TrendsChart.tsx
+++ b/dashboard/components/TrendsChart.tsx
@@ -41,8 +41,8 @@ export default function TrendsChart({ trends }: TrendsChartProps) {
     }),
     requests: Number.parseInt(trend.requests),
     tokens: Number.parseInt(trend.tokens),
-    cost: parseFloat(trend.cost),
-    responseTime: Math.round(parseFloat(trend.avg_response_time)),
+    cost: Number.parseFloat(trend.cost),
+    responseTime: Math.round(Number.parseFloat(trend.avg_response_time)),
   }));
 
   return (