--- /tmp/evalscope-sync/src-v191/evalscope/evaluator/evaluator.py	2026-07-21 03:18:18.000000000 +0000
+++ /data1/syy/evalscope/evalstone/evalscope/evalscope/evaluator/evaluator.py	2026-09-01 03:48:30.955904239 +0000
@@ -534,12 +534,15 @@
         if self.task_config.collect_perf:
             report.perf_metrics = self.perf_collector.get_perf_dict() or None
 
+        # Vendor HTTP request success rate (counted per attempt, including retries).
+        self._inject_request_stats(report)
+
         # Save the complete report to file
         report.to_json(report_file)
         logger.info(f'Dump report to: {report_file} \n')
 
         # Print per-benchmark perf table when perf data is available
-        if self.task_config.collect_perf and report.perf_metrics:
+        if report.perf_metrics:
             try:
                 perf_table = gen_perf_table(report_list=[report])
                 if perf_table:
@@ -549,6 +552,18 @@
 
         return report
 
+    def _inject_request_stats(self, report: Report) -> None:
+        """Attach HTTP request success stats under ``perf_metrics.summary.request``."""
+        api = getattr(self.model, 'api', None)
+        stats = getattr(api, 'request_stats', None)
+        if stats is None or stats.total_attempts <= 0:
+            return
+        payload = stats.snapshot()
+        if report.perf_metrics is None:
+            report.perf_metrics = {}
+        summary = report.perf_metrics.setdefault('summary', {})
+        summary['request'] = payload
+
     def finalize(self, *args, **kwargs):
         self.benchmark.finalize(*args, **kwargs)
         self.cache_manager.close()