diff --git a/tests/test_managers.py b/tests/test_managers.py
index 721fceec..d13c5e4b 100644
--- a/tests/test_managers.py
+++ b/tests/test_managers.py
@@ -5297,28 +5297,38 @@ async def test_delete_batch_item(
 
 @pytest.mark.asyncio
 async def test_list_running_batches(server, default_user, dummy_beta_message_batch, letta_batch_job, event_loop):
-    # Create a recent running batch
-    await server.batch_manager.create_llm_batch_job_async(
-        llm_provider=ProviderType.anthropic,
-        status=JobStatus.running,
-        create_batch_response=dummy_beta_message_batch,
-        actor=default_user,
-        letta_batch_job_id=letta_batch_job.id,
-    )
+    # Create recent running batches
+    num_running = 3
+
+    for _ in range(num_running):
+        await server.batch_manager.create_llm_batch_job_async(
+            llm_provider=ProviderType.anthropic,
+            status=JobStatus.running,
+            create_batch_response=dummy_beta_message_batch,
+            actor=default_user,
+            letta_batch_job_id=letta_batch_job.id,
+        )
 
     # Should return at least one running batch (no time filter)
     running_batches = await server.batch_manager.list_running_llm_batches_async(actor=default_user)
-    assert len(running_batches) >= 1
+    assert len(running_batches) == num_running
     assert all(batch.status == JobStatus.running for batch in running_batches)
 
     # Should return the same when filtering by recent 1 week
     recent_batches = await server.batch_manager.list_running_llm_batches_async(actor=default_user, weeks=1)
-    assert len(recent_batches) >= 1
+    assert len(recent_batches) == num_running
     assert all(batch.status == JobStatus.running for batch in recent_batches)
+    assert all(batch.created_at >= datetime.now(timezone.utc) - timedelta(weeks=1) for batch in recent_batches)
+
+    # Filter by size
+    recent_batches = await server.batch_manager.list_running_llm_batches_async(actor=default_user, weeks=1, batch_size=2)
+    assert len(recent_batches) == 2
+    assert all(batch.status == JobStatus.running for batch in recent_batches)
+    assert all(batch.created_at >= datetime.now(timezone.utc) - timedelta(weeks=1) for batch in recent_batches)
 
     # Should return nothing if filtering by a very small timeframe (e.g., 0 weeks)
     future_batches = await server.batch_manager.list_running_llm_batches_async(actor=default_user, weeks=0)
-    assert all(batch.created_at >= datetime.utcnow() - timedelta(weeks=0) for batch in future_batches)
+    assert len(future_batches) == 0
 
 
 @pytest.mark.asyncio