diff --git a/python/langsmith/client.py b/python/langsmith/client.py
index 3e398c808..b5df51267 100644
--- a/python/langsmith/client.py
+++ b/python/langsmith/client.py
@@ -3938,8 +3938,17 @@ def _log_evaluation_feedback(
         run: Optional[ls_schemas.Run] = None,
         source_info: Optional[Dict[str, Any]] = None,
         project_id: Optional[ID_TYPE] = None,
+        *,
+        _executor: Optional[cf.ThreadPoolExecutor] = None,
     ) -> List[ls_evaluator.EvaluationResult]:
         results = self._select_eval_results(evaluator_response)
+
+        def _submit_feedback(**kwargs):
+            if _executor:
+                _executor.submit(self.create_feedback, **kwargs)
+            else:
+                self.create_feedback(**kwargs)
+
         for res in results:
             source_info_ = source_info or {}
             if res.evaluator_info:
@@ -3949,9 +3958,10 @@ def _log_evaluation_feedback(
                 run_id_ = res.target_run_id
             elif run is not None:
                 run_id_ = run.id
-            self.create_feedback(
-                run_id_,
-                res.key,
+
+            _submit_feedback(
+                run_id=run_id_,
+                key=res.key,
                 score=res.score,
                 value=res.value,
                 comment=res.comment,
diff --git a/python/langsmith/evaluation/_arunner.py b/python/langsmith/evaluation/_arunner.py
index 20021480f..79754261c 100644
--- a/python/langsmith/evaluation/_arunner.py
+++ b/python/langsmith/evaluation/_arunner.py
@@ -3,6 +3,7 @@
 from __future__ import annotations
 
 import asyncio
+import concurrent.futures as cf
 import datetime
 import logging
 import pathlib
@@ -603,9 +604,12 @@ async def _ascore(
         max_concurrency: Optional[int] = None,
     ) -> AsyncIterator[ExperimentResultRow]:
         async def score_all():
-            async for current_results in self.aget_results():
-                # Yield the coroutine to be awaited later in aiter_with_concurrency
-                yield self._arun_evaluators(evaluators, current_results)
+            with cf.ThreadPoolExecutor(max_workers=4) as executor:
+                async for current_results in self.aget_results():
+                    # Yield the coroutine to be awaited later in aiter_with_concurrency
+                    yield self._arun_evaluators(
+                        evaluators, current_results, executor=executor
+                    )
 
         async for result in aitertools.aiter_with_concurrency(
             max_concurrency, score_all(), _eager_consumption_timeout=0.001
@@ -616,6 +620,7 @@ async def _arun_evaluators(
         self,
         evaluators: Sequence[RunEvaluator],
         current_results: ExperimentResultRow,
+        executor: cf.ThreadPoolExecutor,
     ) -> ExperimentResultRow:
         current_context = rh.get_tracing_context()
         metadata = {
@@ -642,8 +647,7 @@ async def _arun_evaluators(
                     )
                     eval_results["results"].extend(
                         self.client._log_evaluation_feedback(
-                            evaluator_response,
-                            run=run,
+                            evaluator_response, run=run, _executor=executor
                         )
                     )
                 except Exception as e:
diff --git a/python/langsmith/evaluation/_runner.py b/python/langsmith/evaluation/_runner.py
index 430bb537c..4742a99b9 100644
--- a/python/langsmith/evaluation/_runner.py
+++ b/python/langsmith/evaluation/_runner.py
@@ -1294,6 +1294,7 @@ def _run_evaluators(
         self,
         evaluators: Sequence[RunEvaluator],
         current_results: ExperimentResultRow,
+        executor: cf.ThreadPoolExecutor,
     ) -> ExperimentResultRow:
         current_context = rh.get_tracing_context()
         metadata = {
@@ -1325,8 +1326,7 @@ def _run_evaluators(
                     eval_results["results"].extend(
                         # TODO: This is a hack
                         self.client._log_evaluation_feedback(
-                            evaluator_response,
-                            run=run,
+                            evaluator_response, run=run, _executor=executor
                         )
                     )
                 except Exception as e:
@@ -1351,14 +1351,19 @@ def _score(
         Expects runs to be available in the manager.
         (e.g. from a previous prediction step)
         """
-        if max_concurrency == 0:
-            context = copy_context()
-            for current_results in self.get_results():
-                yield context.run(self._run_evaluators, evaluators, current_results)
-        else:
-            with ls_utils.ContextThreadPoolExecutor(
-                max_workers=max_concurrency
-            ) as executor:
+        with ls_utils.ContextThreadPoolExecutor(
+            max_workers=max_concurrency
+        ) as executor:
+            if max_concurrency == 0:
+                context = copy_context()
+                for current_results in self.get_results():
+                    yield context.run(
+                        self._run_evaluators,
+                        evaluators,
+                        current_results,
+                        executor=executor,
+                    )
+            else:
                 futures = set()
                 for current_results in self.get_results():
                     futures.add(
@@ -1366,6 +1371,7 @@ def _score(
                             self._run_evaluators,
                             evaluators,
                             current_results,
+                            executor=executor,
                         )
                     )
                     try: