diff --git a/ui/src/pages/IssueDetail.tsx b/ui/src/pages/IssueDetail.tsx
index 7f98db5e..e90965f6 100644
--- a/ui/src/pages/IssueDetail.tsx
+++ b/ui/src/pages/IssueDetail.tsx
@@ -206,7 +206,6 @@ export function IssueDetail() {
   const [detailTab, setDetailTab] = useState("comments");
   const [secondaryOpen, setSecondaryOpen] = useState({
     approvals: false,
-    cost: false,
   });
   const [attachmentError, setAttachmentError] = useState<string | null>(null);
   const [attachmentDragActive, setAttachmentDragActive] = useState(false);
@@ -1065,6 +1064,30 @@ export function IssueDetail() {
         </TabsContent>
 
         <TabsContent value="activity">
+          {linkedRuns && linkedRuns.length > 0 && (
+            <div className="mb-3 px-3 py-2 rounded-lg border border-border">
+              <div className="text-sm font-medium text-muted-foreground mb-1">Cost Summary</div>
+              {!issueCostSummary.hasCost && !issueCostSummary.hasTokens ? (
+                <div className="text-xs text-muted-foreground">No cost data yet.</div>
+              ) : (
+                <div className="flex flex-wrap gap-3 text-xs text-muted-foreground tabular-nums">
+                  {issueCostSummary.hasCost && (
+                    <span className="font-medium text-foreground">
+                      ${issueCostSummary.cost.toFixed(4)}
+                    </span>
+                  )}
+                  {issueCostSummary.hasTokens && (
+                    <span>
+                      Tokens {formatTokens(issueCostSummary.totalTokens)}
+                      {issueCostSummary.cached > 0
+                        ? ` (in ${formatTokens(issueCostSummary.input)}, out ${formatTokens(issueCostSummary.output)}, cached ${formatTokens(issueCostSummary.cached)})`
+                        : ` (in ${formatTokens(issueCostSummary.input)}, out ${formatTokens(issueCostSummary.output)})`}
+                    </span>
+                  )}
+                </div>
+              )}
+            </div>
+          )}
           {!activity || activity.length === 0 ? (
             <p className="text-xs text-muted-foreground">No activity yet.</p>
           ) : (
@@ -1133,43 +1156,6 @@ export function IssueDetail() {
         </Collapsible>
       )}
 
-      {linkedRuns && linkedRuns.length > 0 && (
-        <Collapsible
-          open={secondaryOpen.cost}
-          onOpenChange={(open) => setSecondaryOpen((prev) => ({ ...prev, cost: open }))}
-          className="rounded-lg border border-border"
-        >
-          <CollapsibleTrigger className="flex w-full items-center justify-between px-3 py-2 text-left">
-            <span className="text-sm font-medium text-muted-foreground">Cost Summary</span>
-            <ChevronDown
-              className={cn("h-4 w-4 text-muted-foreground transition-transform", secondaryOpen.cost && "rotate-180")}
-            />
-          </CollapsibleTrigger>
-          <CollapsibleContent>
-            <div className="border-t border-border px-3 py-2">
-              {!issueCostSummary.hasCost && !issueCostSummary.hasTokens ? (
-                <div className="text-xs text-muted-foreground">No cost data yet.</div>
-              ) : (
-                <div className="flex flex-wrap gap-3 text-xs text-muted-foreground tabular-nums">
-                  {issueCostSummary.hasCost && (
-                    <span className="font-medium text-foreground">
-                      ${issueCostSummary.cost.toFixed(4)}
-                    </span>
-                  )}
-                  {issueCostSummary.hasTokens && (
-                    <span>
-                      Tokens {formatTokens(issueCostSummary.totalTokens)}
-                      {issueCostSummary.cached > 0
-                        ? ` (in ${formatTokens(issueCostSummary.input)}, out ${formatTokens(issueCostSummary.output)}, cached ${formatTokens(issueCostSummary.cached)})`
-                        : ` (in ${formatTokens(issueCostSummary.input)}, out ${formatTokens(issueCostSummary.output)})`}
-                    </span>
-                  )}
-                </div>
-              )}
-            </div>
-          </CollapsibleContent>
-        </Collapsible>
-      )}
 
       {/* Mobile properties drawer */}
       <Sheet open={mobilePropsOpen} onOpenChange={setMobilePropsOpen}>