diff --git a/src/google/adk/agents/run_config.py b/src/google/adk/agents/run_config.py
index c9a50a0ae..52d8a9f57 100644
--- a/src/google/adk/agents/run_config.py
+++ b/src/google/adk/agents/run_config.py
@@ -79,6 +79,9 @@ class RunConfig(BaseModel):
   proactivity: Optional[types.ProactivityConfig] = None
   """Configures the proactivity of the model. This allows the model to respond proactively to the input and to ignore irrelevant input."""
 
+  session_resumption: Optional[types.SessionResumptionConfig] = None
+  """Configures session resumption mechanism. Only support transparent session resumption mode now."""
+
   max_llm_calls: int = 500
   """
   A limit on the total number of llm calls for a given run.
diff --git a/src/google/adk/flows/llm_flows/basic.py b/src/google/adk/flows/llm_flows/basic.py
index ee5c83da1..2557088b1 100644
--- a/src/google/adk/flows/llm_flows/basic.py
+++ b/src/google/adk/flows/llm_flows/basic.py
@@ -74,6 +74,9 @@ async def run_async(
     llm_request.live_connect_config.proactivity = (
         invocation_context.run_config.proactivity
     )
+    llm_request.live_connect_config.proactivity = (
+        invocation_context.run_config.session_resumption
+    )
 
     # TODO: handle tool append here, instead of in BaseTool.process_llm_request.
 
diff --git a/tests/unittests/streaming/test_live_streaming_configs.py b/tests/unittests/streaming/test_live_streaming_configs.py
new file mode 100644
index 000000000..eb5a49402
--- /dev/null
+++ b/tests/unittests/streaming/test_live_streaming_configs.py
@@ -0,0 +1,477 @@
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from google.adk.agents import Agent
+from google.adk.agents import LiveRequestQueue
+from google.adk.agents.run_config import RunConfig
+from google.adk.models import LlmResponse
+from google.genai import types
+import pytest
+
+from .. import testing_utils
+
+
+def test_streaming():
+  response1 = LlmResponse(
+      turn_complete=True,
+  )
+
+  mock_model = testing_utils.MockModel.create([response1])
+
+  root_agent = Agent(
+      name='root_agent',
+      model=mock_model,
+      tools=[],
+  )
+
+  runner = testing_utils.InMemoryRunner(
+      root_agent=root_agent, response_modalities=['AUDIO']
+  )
+  live_request_queue = LiveRequestQueue()
+  live_request_queue.send_realtime(
+      blob=types.Blob(data=b'\x00\xFF', mime_type='audio/pcm')
+  )
+  res_events = runner.run_live(live_request_queue)
+
+  assert res_events is not None, 'Expected a list of events, got None.'
+  assert (
+      len(res_events) > 0
+  ), 'Expected at least one response, but got an empty list.'
+
+
+def test_streaming_with_output_audio_transcription():
+  """Test streaming with output audio transcription configuration."""
+  response1 = LlmResponse(
+      turn_complete=True,
+  )
+
+  mock_model = testing_utils.MockModel.create([response1])
+
+  root_agent = Agent(
+      name='root_agent',
+      model=mock_model,
+      tools=[],
+  )
+
+  runner = testing_utils.InMemoryRunner(
+      root_agent=root_agent, response_modalities=['AUDIO']
+  )
+
+  # Create run config with output audio transcription
+  run_config = RunConfig(
+      output_audio_transcription=types.AudioTranscriptionConfig()
+  )
+
+  live_request_queue = LiveRequestQueue()
+  live_request_queue.send_realtime(
+      blob=types.Blob(data=b'\x00\xFF', mime_type='audio/pcm')
+  )
+  res_events = runner.run_live(live_request_queue, run_config)
+
+  assert res_events is not None, 'Expected a list of events, got None.'
+  assert (
+      len(res_events) > 0
+  ), 'Expected at least one response, but got an empty list.'
+
+
+def test_streaming_with_input_audio_transcription():
+  """Test streaming with input audio transcription configuration."""
+  response1 = LlmResponse(
+      turn_complete=True,
+  )
+
+  mock_model = testing_utils.MockModel.create([response1])
+
+  root_agent = Agent(
+      name='root_agent',
+      model=mock_model,
+      tools=[],
+  )
+
+  runner = testing_utils.InMemoryRunner(
+      root_agent=root_agent, response_modalities=['AUDIO']
+  )
+
+  # Create run config with input audio transcription
+  run_config = RunConfig(
+      input_audio_transcription=types.AudioTranscriptionConfig()
+  )
+
+  live_request_queue = LiveRequestQueue()
+  live_request_queue.send_realtime(
+      blob=types.Blob(data=b'\x00\xFF', mime_type='audio/pcm')
+  )
+  res_events = runner.run_live(live_request_queue, run_config)
+
+  assert res_events is not None, 'Expected a list of events, got None.'
+  assert (
+      len(res_events) > 0
+  ), 'Expected at least one response, but got an empty list.'
+
+
+def test_streaming_with_realtime_input_config():
+  """Test streaming with realtime input configuration."""
+  response1 = LlmResponse(
+      turn_complete=True,
+  )
+
+  mock_model = testing_utils.MockModel.create([response1])
+
+  root_agent = Agent(
+      name='root_agent',
+      model=mock_model,
+      tools=[],
+  )
+
+  runner = testing_utils.InMemoryRunner(
+      root_agent=root_agent, response_modalities=['AUDIO']
+  )
+
+  # Create run config with realtime input config
+  run_config = RunConfig(
+      realtime_input_config=types.RealtimeInputConfig(
+          automatic_activity_detection=types.AutomaticActivityDetection(
+              disabled=True
+          )
+      )
+  )
+
+  live_request_queue = LiveRequestQueue()
+  live_request_queue.send_realtime(
+      blob=types.Blob(data=b'\x00\xFF', mime_type='audio/pcm')
+  )
+  res_events = runner.run_live(live_request_queue, run_config)
+
+  assert res_events is not None, 'Expected a list of events, got None.'
+  assert (
+      len(res_events) > 0
+  ), 'Expected at least one response, but got an empty list.'
+
+
+def test_streaming_with_realtime_input_config_vad_enabled():
+  """Test streaming with realtime input configuration with VAD enabled."""
+  response1 = LlmResponse(
+      turn_complete=True,
+  )
+
+  mock_model = testing_utils.MockModel.create([response1])
+
+  root_agent = Agent(
+      name='root_agent',
+      model=mock_model,
+      tools=[],
+  )
+
+  runner = testing_utils.InMemoryRunner(
+      root_agent=root_agent, response_modalities=['AUDIO']
+  )
+
+  # Create run config with realtime input config with VAD enabled
+  run_config = RunConfig(
+      realtime_input_config=types.RealtimeInputConfig(
+          automatic_activity_detection=types.AutomaticActivityDetection(
+              disabled=False
+          )
+      )
+  )
+
+  live_request_queue = LiveRequestQueue()
+  live_request_queue.send_realtime(
+      blob=types.Blob(data=b'\x00\xFF', mime_type='audio/pcm')
+  )
+  res_events = runner.run_live(live_request_queue, run_config)
+
+  assert res_events is not None, 'Expected a list of events, got None.'
+  assert (
+      len(res_events) > 0
+  ), 'Expected at least one response, but got an empty list.'
+
+
+def test_streaming_with_enable_affective_dialog_true():
+  """Test streaming with affective dialog enabled."""
+  response1 = LlmResponse(
+      turn_complete=True,
+  )
+
+  mock_model = testing_utils.MockModel.create([response1])
+
+  root_agent = Agent(
+      name='root_agent',
+      model=mock_model,
+      tools=[],
+  )
+
+  runner = testing_utils.InMemoryRunner(
+      root_agent=root_agent, response_modalities=['AUDIO']
+  )
+
+  # Create run config with affective dialog enabled
+  run_config = RunConfig(enable_affective_dialog=True)
+
+  live_request_queue = LiveRequestQueue()
+  live_request_queue.send_realtime(
+      blob=types.Blob(data=b'\x00\xFF', mime_type='audio/pcm')
+  )
+  res_events = runner.run_live(live_request_queue, run_config)
+
+  assert res_events is not None, 'Expected a list of events, got None.'
+  assert (
+      len(res_events) > 0
+  ), 'Expected at least one response, but got an empty list.'
+
+
+def test_streaming_with_enable_affective_dialog_false():
+  """Test streaming with affective dialog disabled."""
+  response1 = LlmResponse(
+      turn_complete=True,
+  )
+
+  mock_model = testing_utils.MockModel.create([response1])
+
+  root_agent = Agent(
+      name='root_agent',
+      model=mock_model,
+      tools=[],
+  )
+
+  runner = testing_utils.InMemoryRunner(
+      root_agent=root_agent, response_modalities=['AUDIO']
+  )
+
+  # Create run config with affective dialog disabled
+  run_config = RunConfig(enable_affective_dialog=False)
+
+  live_request_queue = LiveRequestQueue()
+  live_request_queue.send_realtime(
+      blob=types.Blob(data=b'\x00\xFF', mime_type='audio/pcm')
+  )
+  res_events = runner.run_live(live_request_queue, run_config)
+
+  assert res_events is not None, 'Expected a list of events, got None.'
+  assert (
+      len(res_events) > 0
+  ), 'Expected at least one response, but got an empty list.'
+
+
+def test_streaming_with_proactivity_config():
+  """Test streaming with proactivity configuration."""
+  response1 = LlmResponse(
+      turn_complete=True,
+  )
+
+  mock_model = testing_utils.MockModel.create([response1])
+
+  root_agent = Agent(
+      name='root_agent',
+      model=mock_model,
+      tools=[],
+  )
+
+  runner = testing_utils.InMemoryRunner(
+      root_agent=root_agent, response_modalities=['AUDIO']
+  )
+
+  # Create run config with proactivity config
+  run_config = RunConfig(proactivity=types.ProactivityConfig())
+
+  live_request_queue = LiveRequestQueue()
+  live_request_queue.send_realtime(
+      blob=types.Blob(data=b'\x00\xFF', mime_type='audio/pcm')
+  )
+  res_events = runner.run_live(live_request_queue, run_config)
+
+  assert res_events is not None, 'Expected a list of events, got None.'
+  assert (
+      len(res_events) > 0
+  ), 'Expected at least one response, but got an empty list.'
+
+
+def test_streaming_with_combined_audio_transcription_configs():
+  """Test streaming with both input and output audio transcription configurations."""
+  response1 = LlmResponse(
+      turn_complete=True,
+  )
+
+  mock_model = testing_utils.MockModel.create([response1])
+
+  root_agent = Agent(
+      name='root_agent',
+      model=mock_model,
+      tools=[],
+  )
+
+  runner = testing_utils.InMemoryRunner(
+      root_agent=root_agent, response_modalities=['AUDIO']
+  )
+
+  # Create run config with both input and output audio transcription
+  run_config = RunConfig(
+      input_audio_transcription=types.AudioTranscriptionConfig(),
+      output_audio_transcription=types.AudioTranscriptionConfig(),
+  )
+
+  live_request_queue = LiveRequestQueue()
+  live_request_queue.send_realtime(
+      blob=types.Blob(data=b'\x00\xFF', mime_type='audio/pcm')
+  )
+  res_events = runner.run_live(live_request_queue, run_config)
+
+  assert res_events is not None, 'Expected a list of events, got None.'
+  assert (
+      len(res_events) > 0
+  ), 'Expected at least one response, but got an empty list.'
+
+
+def test_streaming_with_all_configs_combined():
+  """Test streaming with all the new configurations combined."""
+  response1 = LlmResponse(
+      turn_complete=True,
+  )
+
+  mock_model = testing_utils.MockModel.create([response1])
+
+  root_agent = Agent(
+      name='root_agent',
+      model=mock_model,
+      tools=[],
+  )
+
+  runner = testing_utils.InMemoryRunner(
+      root_agent=root_agent, response_modalities=['AUDIO']
+  )
+
+  # Create run config with all configurations
+  run_config = RunConfig(
+      output_audio_transcription=types.AudioTranscriptionConfig(),
+      input_audio_transcription=types.AudioTranscriptionConfig(),
+      realtime_input_config=types.RealtimeInputConfig(
+          automatic_activity_detection=types.AutomaticActivityDetection(
+              disabled=True
+          )
+      ),
+      enable_affective_dialog=True,
+      proactivity=types.ProactivityConfig(),
+  )
+
+  live_request_queue = LiveRequestQueue()
+  live_request_queue.send_realtime(
+      blob=types.Blob(data=b'\x00\xFF', mime_type='audio/pcm')
+  )
+  res_events = runner.run_live(live_request_queue, run_config)
+
+  assert res_events is not None, 'Expected a list of events, got None.'
+  assert (
+      len(res_events) > 0
+  ), 'Expected at least one response, but got an empty list.'
+
+
+def test_streaming_config_validation():
+  """Test that run_config values are properly set and accessible."""
+  # Test that RunConfig properly validates and stores the configurations
+  run_config = RunConfig(
+      output_audio_transcription=types.AudioTranscriptionConfig(),
+      input_audio_transcription=types.AudioTranscriptionConfig(),
+      realtime_input_config=types.RealtimeInputConfig(
+          automatic_activity_detection=types.AutomaticActivityDetection(
+              disabled=False
+          )
+      ),
+      enable_affective_dialog=True,
+      proactivity=types.ProactivityConfig(),
+  )
+
+  # Verify configurations are properly set
+  assert run_config.output_audio_transcription is not None
+  assert run_config.input_audio_transcription is not None
+  assert run_config.realtime_input_config is not None
+  assert (
+      run_config.realtime_input_config.automatic_activity_detection.disabled
+      == False
+  )
+  assert run_config.enable_affective_dialog == True
+  assert run_config.proactivity is not None
+
+
+def test_streaming_with_multiple_audio_configs():
+  """Test streaming with multiple audio transcription configurations."""
+  response1 = LlmResponse(
+      turn_complete=True,
+  )
+
+  mock_model = testing_utils.MockModel.create([response1])
+
+  root_agent = Agent(
+      name='root_agent',
+      model=mock_model,
+      tools=[],
+  )
+
+  runner = testing_utils.InMemoryRunner(
+      root_agent=root_agent, response_modalities=['AUDIO']
+  )
+
+  # Create run config with multiple audio transcription configs
+  run_config = RunConfig(
+      input_audio_transcription=types.AudioTranscriptionConfig(),
+      output_audio_transcription=types.AudioTranscriptionConfig(),
+      enable_affective_dialog=True,
+  )
+
+  live_request_queue = LiveRequestQueue()
+  live_request_queue.send_realtime(
+      blob=types.Blob(data=b'\x00\xFF', mime_type='audio/pcm')
+  )
+
+  res_events = runner.run_live(live_request_queue, run_config)
+
+  assert res_events is not None, 'Expected a list of events, got None.'
+  assert (
+      len(res_events) > 0
+  ), 'Expected at least one response, but got an empty list.'
+
+
+def test_streaming_with_session_resumption_config():
+  """Test streaming with multiple audio transcription configurations."""
+  response1 = LlmResponse(
+      turn_complete=True,
+  )
+
+  mock_model = testing_utils.MockModel.create([response1])
+
+  root_agent = Agent(
+      name='root_agent',
+      model=mock_model,
+      tools=[],
+  )
+
+  runner = testing_utils.InMemoryRunner(
+      root_agent=root_agent, response_modalities=['AUDIO']
+  )
+
+  # Create run config with multiple audio transcription configs
+  run_config = RunConfig(
+      session_resumption=types.SessionResumptionConfig(transparent=True),
+  )
+
+  live_request_queue = LiveRequestQueue()
+  live_request_queue.send_realtime(
+      blob=types.Blob(data=b'\x00\xFF', mime_type='audio/pcm')
+  )
+
+  res_events = runner.run_live(live_request_queue, run_config)
+
+  assert res_events is not None, 'Expected a list of events, got None.'
+  assert (
+      len(res_events) > 0
+  ), 'Expected at least one response, but got an empty list.'