@@ -41,7 +41,7 @@ export function Sidebar(props: { sessionID: string; overlay?: boolean }) {
   )
 
   const cost = createMemo(() => {
-    const total = session().cost ?? 0
+    const total = session().cost ?? messages().reduce((sum, x) => sum + (x.role === "assistant" ? x.cost : 0), 0)
     return new Intl.NumberFormat("en-US", {
       style: "currency",
       currency: "USD",
Original file line number	Diff line number	Diff line change
`@@ -41,7 +41,7 @@ export function Sidebar(props: { sessionID: string; overlay?: boolean }) {`
`41`	`41`	`)`
`42`	`42`
`43`	`43`	`const cost = createMemo(() => {`
`44`		`- const total = session().cost ?? 0`
	`44`	`+ const total = session().cost ?? messages().reduce((sum, x) => sum + (x.role === "assistant" ? x.cost : 0), 0)`
`45`	`45`	`return new Intl.NumberFormat("en-US", {`
`46`	`46`	`style: "currency",`
`47`	`47`	`currency: "USD",`