What event is to get Agent response in livekit when i use Realtime model

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Python SDK

Thanks — I’ll show how to detect the agent’s response in the Python SDK for a Realtime model. Key points: • Listen for the

speech_created

event on the

AgentSession

— this is emitted whenever the agent generates speech (for example from

session.say()

or

session.generate_reply()

). • Use

generate_reply()

to ask the agent to produce a reply; it returns a

SpeechHandle

you can await or attach callbacks to (e.g.,

wait_for_playout()

). Example (Python-style pseudocode showing the pattern):

# assume you have an AgentSession instance named `session`
# and an async event loop

# 1. Attach a handler to speech_created
def on_speech_created(speech):
    # `speech` is the Speech object created by the agent
    print("Agent generated speech:", speech.id)
    print("Text:", getattr(speech, "text", "<no text available>"))
    # You can access additional metadata on speech here if provided

session.on("speech_created", on_speech_created)

# 2. Trigger the agent to generate a reply
async def ask_agent():
    # generate_reply returns a SpeechHandle
    handle = await session.generate_reply(instructions="Greet the user and introduce yourself")
    
    # wait for the speech to finish playing out
    await handle.wait_for_playout()
    print("Agent playout finished")

# run your ask_agent coroutine in your event loop

Notes and tips: • The

speech_created

event fires as soon as the speech object is produced. Use

SpeechHandle

methods (like

wait_for_playout()

) to know when audio playout completes. • If you prefer callbacks instead of awaiting, attach them to the

SpeechHandle

(for example, a completion callback) if the SDK exposes such methods. • If you’d like, I can provide a concrete runnable snippet that matches the exact Python SDK classes/method names you’re using — tell me which LiveKit Python SDK version you have or paste the small part of your current session setup.