diff --git a/open-sse/handlers/chatCore.js b/open-sse/handlers/chatCore.js
index 190cbb44..b5cf8a84 100644
--- a/open-sse/handlers/chatCore.js
+++ b/open-sse/handlers/chatCore.js
@@ -326,8 +326,8 @@ export async function handleChatCore({ body, modelInfo, credentials, log, onCred
   }
 
   // Streaming response
-  const { onStreamComplete } = buildOnStreamComplete({ ...sharedCtx });
-  return handleStreamingResponse({ ...sharedCtx, providerResponse, sourceFormat, targetFormat, userAgent, reqLogger, toolNameMap, streamController, onStreamComplete });
+  const { onStreamComplete, streamDetailId } = buildOnStreamComplete({ ...sharedCtx });
+  return handleStreamingResponse({ ...sharedCtx, providerResponse, sourceFormat, targetFormat, userAgent, reqLogger, toolNameMap, streamController, onStreamComplete, streamDetailId });
 }
 
 export function isTokenExpiringSoon(expiresAt, bufferMs = 5 * 60 * 1000) {
diff --git a/open-sse/handlers/chatCore/streamingHandler.js b/open-sse/handlers/chatCore/streamingHandler.js
index 4c076dee..fb14bc0b 100644
--- a/open-sse/handlers/chatCore/streamingHandler.js
+++ b/open-sse/handlers/chatCore/streamingHandler.js
@@ -43,7 +43,7 @@ function buildTransformStream({ provider, sourceFormat, targetFormat, userAgent,
 /**
  * Handle streaming response — pipe provider SSE through transform stream to client.
  */
-export async function handleStreamingResponse({ providerResponse, provider, model, sourceFormat, targetFormat, userAgent, body, stream, translatedBody, finalBody, requestStartTime, connectionId, apiKey, clientRawRequest, onRequestSuccess, reqLogger, toolNameMap, streamController, onStreamComplete }) {
+export async function handleStreamingResponse({ providerResponse, provider, model, sourceFormat, targetFormat, userAgent, body, stream, translatedBody, finalBody, requestStartTime, connectionId, apiKey, clientRawRequest, onRequestSuccess, reqLogger, toolNameMap, streamController, onStreamComplete, streamDetailId }) {
   if (onRequestSuccess) {
     Promise.resolve()
       .then(onRequestSuccess)
@@ -86,7 +86,6 @@ export async function handleStreamingResponse({ providerResponse, provider, mode
   const stallTimeoutMs = PROVIDERS[provider]?.stallTimeoutMs || STREAM_STALL_TIMEOUT_MS;
   const transformedBody = pipeWithDisconnect(providerResponse, transformStream, streamController, onAbortTerminal, stallTimeoutMs);
 
-  const streamDetailId = `${Date.now()}-${Math.random().toString(36).slice(2, 11)}`;
   saveRequestDetail(buildRequestDetail({
     provider, model, connectionId,
     latency: { ttft: 0, total: Date.now() - requestStartTime },