diff --git a/python/packages/ag-ui/agent_framework_ag_ui/_orchestrators.py b/python/packages/ag-ui/agent_framework_ag_ui/_orchestrators.py
index 654498e371..6bdff552b6 100644
--- a/python/packages/ag-ui/agent_framework_ag_ui/_orchestrators.py
+++ b/python/packages/ag-ui/agent_framework_ag_ui/_orchestrators.py
@@ -86,7 +86,7 @@ def last_message(self):
     def run_id(self) -> str:
         """Get or generate run ID."""
         if self._run_id is None:
-            self._run_id = self.input_data.get("run_id") or str(uuid.uuid4())
+            self._run_id = self.input_data.get("run_id") or self.input_data.get("runId") or str(uuid.uuid4())
         # This should never be None after the if block above, but satisfy type checkers
         if self._run_id is None:  # pragma: no cover
             raise RuntimeError("Failed to initialize run_id")
@@ -96,7 +96,7 @@ def run_id(self) -> str:
     def thread_id(self) -> str:
         """Get or generate thread ID."""
         if self._thread_id is None:
-            self._thread_id = self.input_data.get("thread_id") or str(uuid.uuid4())
+            self._thread_id = self.input_data.get("thread_id") or self.input_data.get("threadId") or str(uuid.uuid4())
         # This should never be None after the if block above, but satisfy type checkers
         if self._thread_id is None:  # pragma: no cover
             raise RuntimeError("Failed to initialize thread_id")
diff --git a/python/packages/ag-ui/tests/test_orchestrators.py b/python/packages/ag-ui/tests/test_orchestrators.py
index 10843a259c..af90ea2e88 100644
--- a/python/packages/ag-ui/tests/test_orchestrators.py
+++ b/python/packages/ag-ui/tests/test_orchestrators.py
@@ -83,3 +83,71 @@ async def test_default_orchestrator_merges_client_tools() -> None:
     assert "server_tool" in tool_names
     assert "get_weather" in tool_names
     assert agent.chat_client.function_invocation_configuration.additional_tools
+
+
+async def test_default_orchestrator_with_camel_case_ids() -> None:
+    """Client tool is able to extract camelCase IDs."""
+
+    agent = DummyAgent()
+    orchestrator = DefaultOrchestrator()
+
+    input_data = {
+        "runId": "test-camelcase-runid",
+        "threadId": "test-camelcase-threadid",
+        "messages": [
+            {
+                "role": "user",
+                "content": [{"type": "input_text", "text": "Hello"}],
+            }
+        ],
+        "tools": [],
+    }
+
+    context = ExecutionContext(
+        input_data=input_data,
+        agent=agent,
+        config=AgentConfig(),
+    )
+
+    events = []
+    async for event in orchestrator.run(context):
+        events.append(event)
+
+    # assert the last event has the expected run_id and thread_id
+    last_event = events[-1]
+    assert last_event.run_id == "test-camelcase-runid"
+    assert last_event.thread_id == "test-camelcase-threadid"
+
+
+async def test_default_orchestrator_with_snake_case_ids() -> None:
+    """Client tool is able to extract snake_case IDs."""
+
+    agent = DummyAgent()
+    orchestrator = DefaultOrchestrator()
+
+    input_data = {
+        "run_id": "test-snakecase-runid",
+        "thread_id": "test-snakecase-threadid",
+        "messages": [
+            {
+                "role": "user",
+                "content": [{"type": "input_text", "text": "Hello"}],
+            }
+        ],
+        "tools": [],
+    }
+
+    context = ExecutionContext(
+        input_data=input_data,
+        agent=agent,
+        config=AgentConfig(),
+    )
+
+    events = []
+    async for event in orchestrator.run(context):
+        events.append(event)
+
+    # assert the last event has the expected run_id and thread_id
+    last_event = events[-1]
+    assert last_event.run_id == "test-snakecase-runid"
+    assert last_event.thread_id == "test-snakecase-threadid"