fast-hairdresser-13908
12/23/2025, 10:54 AMtall-airline-16756
12/23/2025, 10:54 AMtall-airline-16756
12/23/2025, 10:54 AMvad=silero.VAD.load() — strong VAD with clear start/end events.
• stt=deepgram.STT(model="nova-3", language="multi") — good multilingual STT.
• Your LLM and TTS choices are fine for quality.
What to change for best interruption / end-of-turn handling:
1. Enable interim transcripts:
◦ Set interim_results=True on Deepgram STT. Interim results are required by turn detection and let the agent react faster and better to partial speech.
1. Add a turn detector model:
◦ Use LiveKit’s turn detector (e.g., MultilingualModel) via turn_detection=. It combines VAD, interim STT, and context to predict end-of-turn more accurately than VAD-only endpointing.
1. Optional tuning (helps latency and interruption sensitivity):
◦ preemptive_generation=True — starts LLM generation while user is still speaking to reduce response latency.
◦ min_endpointing_delay=0.5 and max_endpointing_delay=6.0 — tune these to balance early responses vs. false cuts.
◦ min_interruption_duration=0.5 / min_interruption_words=1 — tune to avoid false interruption triggers.
Recommended final snippet (minimal):
session = AgentSession(
vad=silero.VAD.load(),
stt=deepgram.STT(model="nova-3", language="multi", interim_results=True),
llm=groq.LLM(model="meta-llama/llama-4-scout-17b-16e-instruct", temperature=0.2),
tts=deepgram.TTS(model="aura-2-andromeda-en", sample_rate=24000),
turn_detection=MultilingualModel(),
preemptive_generation=True,
min_endpointing_delay=0.5,
max_endpointing_delay=6.0,
)
If you want, I can:
• Suggest exact values for endpoint/interruption thresholds based on your typical utterance lengths, or
• Provide the import/installation lines for the turn detector model. Which would you like? Sources: Turns overview | LiveKit docs | Silero VAD plugin | LiveKit docs | Deepgram STT | LiveKit docs | How does end-of-utterance detection work in conversations? | LiveKit turn detector plugin | LiveKit docsfast-hairdresser-13908
12/23/2025, 11:03 AMtall-airline-16756
12/23/2025, 11:03 AMturn_detection=MultilingualModel() (not "vad") for best end-of-turn and interruption handling.
A) Install / import / download
1. Install (Python)
uv add "livekit-agents[turn-detector,silero]~=1.3"
1. Imports in your agent script
from livekit.agents import AgentSession
from livekit.plugins.turn_detector.multilingual import MultilingualModel
from livekit.plugins import silero
# your STT/LLM/TTS imports (Deepgram, Groq, etc.)
1. Download model weights (run once before starting)
uv run agent.py download-files
If you use a custom runner, ensure a download-files command runs the agent’s downloader (the quickstart shows exact scripts).
B) Recommended configuration and numeric tuning Use this minimal recommended session plus tuned thresholds:
session = AgentSession(
vad=silero.VAD.load(),
stt=deepgram.STT(model="nova-3", language="multi", interim_results=True),
llm=groq.LLM(model="meta-llama/llama-4-scout-17b-16e-instruct", temperature=0.2),
tts=deepgram.TTS(model="aura-2-andromeda-en", sample_rate=24000),
turn_detection=MultilingualModel(),
preemptive_generation=True,
# endpointing
min_endpointing_delay=0.5, # respond quickly when model is confident
max_endpointing_delay=6.0, # wait longer if model predicts continuation
# interruption tuning
allow_interruptions=True,
min_interruption_duration=0.5, # avoid false interrupts from short noises
min_interruption_words=1, # require at least one recognized word
)
When to change these values
• Noisy environments: increase min_interruption_duration to 0.8–1.0s and consider noise suppression upstream.
• Fast back-and-forth dialogs (short utterances): lower min_endpointing_delay to 0.3s to reduce latency, but test for false cuts.
• Very long user monologues: increase max_endpointing_delay (8–10s) to avoid premature cutoffs.
• Multilingual conversations: keep language="multi" and use MultilingualModel().
Why choose MultilingualModel() over "vad"
• `vad`: uses silence only — simple and low-resource but causes false cuts or long waits.
• `MultilingualModel()`: combines VAD + interim STT + context to predict end-of-turn — far better for natural conversational flow and interruption handling. Use "vad" only when STT/interim results are unavailable or you must minimize resources.
If you want, I can:
• Suggest exact threshold values tailored to sample audio (typical utterance length and SNR), or
• Provide the exact download-files script contents and where model weights are stored. Which would you prefer? Sources: Turns overview | LiveKit docs | examples/voice_agents | livekit/livekit_composite | DeepWiki | LiveKit turn detector plugin | LiveKit docs | Voice AI quickstart | LiveKit docsfast-hairdresser-13908
12/23/2025, 11:19 AMtall-airline-16756
12/23/2025, 11:19 AM