diff --git a/apps/sim/app/workspace/[workspaceId]/home/hooks/use-chat.ts b/apps/sim/app/workspace/[workspaceId]/home/hooks/use-chat.ts
index 6c1031c343..8b5703ffbb 100644
--- a/apps/sim/app/workspace/[workspaceId]/home/hooks/use-chat.ts
+++ b/apps/sim/app/workspace/[workspaceId]/home/hooks/use-chat.ts
@@ -368,6 +368,15 @@ export function useChat(
       options?: { preserveExistingState?: boolean }
     ) => Promise<{ sawStreamError: boolean; sawComplete: boolean }>
   >(async () => ({ sawStreamError: false, sawComplete: false }))
+  const attachToExistingStreamRef = useRef<
+    (opts: {
+      streamId: string
+      assistantId: string
+      expectedGen: number
+      initialBatch?: StreamBatchResponse | null
+      afterCursor?: string
+    }) => Promise<{ error: boolean; aborted: boolean }>
+  >(async () => ({ error: false, aborted: true }))
   const retryReconnectRef = useRef<
     (opts: { streamId: string; assistantId: string; gen: number }) => Promise<boolean>
   >(async () => false)
@@ -617,7 +626,7 @@ export function useChat(
 
         const reconnectResult =
           snapshotEvents.length > 0
-            ? await attachToExistingStream({
+            ? await attachToExistingStreamRef.current({
                 streamId: activeStreamId,
                 assistantId,
                 expectedGen: gen,
@@ -1613,6 +1622,7 @@ export function useChat(
     },
     [fetchStreamBatch]
   )
+  attachToExistingStreamRef.current = attachToExistingStream
 
   const resumeOrFinalize = useCallback(
     async (opts: {
diff --git a/apps/sim/lib/copilot/request/lifecycle/run.ts b/apps/sim/lib/copilot/request/lifecycle/run.ts
index f5d15cf767..c96fe42afa 100644
--- a/apps/sim/lib/copilot/request/lifecycle/run.ts
+++ b/apps/sim/lib/copilot/request/lifecycle/run.ts
@@ -282,6 +282,12 @@ async function runCheckpointLoop(
       )
     }
 
+    if (isAborted(options, context)) {
+      cancelPendingTools(context)
+      context.awaitingAsyncContinuation = undefined
+      break
+    }
+
     const results: Array<{
       callId: string
       name: string
@@ -289,6 +295,11 @@ async function runCheckpointLoop(
       success: boolean
     }> = []
     for (const toolCallId of continuation.pendingToolCallIds) {
+      if (isAborted(options, context)) {
+        cancelPendingTools(context)
+        context.awaitingAsyncContinuation = undefined
+        break
+      }
       const tool = context.toolCalls.get(toolCallId)
       if (!tool || (!tool.result && !tool.error)) {
         logger.error('Missing tool result for pending tool call', {
@@ -309,6 +320,12 @@ async function runCheckpointLoop(
       })
     }
 
+    if (isAborted(options, context)) {
+      cancelPendingTools(context)
+      context.awaitingAsyncContinuation = undefined
+      break
+    }
+
     logger.info('Resuming with tool results', {
       checkpointId: continuation.checkpointId,
       runId: continuation.runId,
@@ -324,6 +341,13 @@ async function runCheckpointLoop(
       checkpointId: continuation.checkpointId,
       results,
     }
+
+    if (isAborted(options, context)) {
+      cancelPendingTools(context)
+      context.awaitingAsyncContinuation = undefined
+      break
+    }
+
     logger.info('Prepared resume request payload', {
       route,
       streamId: context.messageId,