Inworld plugin for LiveKit Agents
Support for voice synthesis and speech-to-text with Inworld TTS and Inworld STT.
See Inworld TTS and Inworld STT for more information.
Installation
pip install livekit-plugins-inworld
Authentication
Set INWORLD_API_KEY in your .env file (get one here).
Usage
TTS
Use Inworld TTS within an AgentSession or as a standalone speech generator.
from livekit.plugins import inworld
tts = inworld.TTS()
Or with options:
from livekit.plugins import inworld
tts = inworld.TTS(
voice="Hades", # voice ID (default or custom cloned voice)
model="inworld-tts-1", # or "inworld-tts-1-max"
encoding="OGG_OPUS", # LINEAR16, MP3, OGG_OPUS, ALAW, MULAW, FLAC
sample_rate=48000, # 8000-48000 Hz
bit_rate=64000, # bits per second (for compressed formats)
speaking_rate=1.0, # 0.5-1.5
temperature=1.1, # 0-2
timestamp_type="WORD", # WORD, CHARACTER, or TIMESTAMP_TYPE_UNSPECIFIED
text_normalization="OFF", # ON, OFF, or APPLY_TEXT_NORMALIZATION_UNSPECIFIED
)
TTS Streaming
Inworld TTS supports WebSocket streaming for lower latency real-time synthesis. Use the
stream() method for streaming text as it's generated:
from livekit.plugins import inworld
tts = inworld.TTS(
voice="Hades",
model="inworld-tts-1",
buffer_char_threshold=100, # chars before triggering synthesis (default: 100)
max_buffer_delay_ms=3000, # max buffer time in ms (default: 3000)
)
# Create a stream for real-time synthesis
stream = tts.stream()
# Push text incrementally
stream.push_text("Hello, ")
stream.push_text("how are you today?")
stream.flush() # Flush any remaining buffered text
stream.end_input() # Signal end of input
# Consume audio as it's generated
async for audio in stream:
# Process audio frames
pass
STT
Use Inworld STT for streaming speech-to-text. Multiple models are supported.
from livekit.plugins import inworld
session = AgentSession(
stt=inworld.STT()
# ... llm, tts, etc.
)
With a specific model and voice profile detection:
from livekit.plugins import inworld
session = AgentSession(
stt=inworld.STT(
model="inworld/inworld-stt-1",
enable_voice_profile=True,
)
# ... llm, tts, etc.
)
Example
A full voice agent using Inworld for both STT and TTS:
"""Inworld STT + TTS voice agent example.
Demonstrates using Inworld for both speech-to-text and text-to-speech
in a LiveKit voice agent. Save this as ``inworld_agent.py`` and run:
uv run inworld_agent.py console # local console mode
uv run inworld_agent.py dev # LiveKit Cloud (requires LIVEKIT_URL,
# LIVEKIT_API_KEY, LIVEKIT_API_SECRET)
Then connect via https://agents-playground.livekit.io
"""
import logging
from dotenv import load_dotenv
from livekit.agents import (
Agent,
AgentServer,
AgentSession,
JobContext,
cli,
inference,
metrics,
room_io,
)
from livekit.agents.inference import TurnDetector
from livekit.plugins import inworld
logger = logging.getLogger("inworld-agent")
load_dotenv()
class InworldAgent(Agent):
def __init__(self) -> None:
super().__init__(
instructions=(
"Your name is Nova. You interact with users via voice. "
"Keep your responses concise and to the point. "
"Do not use emojis, asterisks, markdown, or other special characters. "
"You are helpful, curious, and friendly."
),
)
async def on_enter(self):
self.session.generate_reply()
server = AgentServer()
@server.rtc_session()
async def entrypoint(ctx: JobContext):
ctx.log_context_fields = {"room": ctx.room.name}
session = AgentSession(
stt=inworld.STT(model="inworld/inworld-stt-1"),
llm="openai/gpt-4.1-mini",
tts=inworld.TTS(voice="Clive"),
turn_detection=TurnDetector(),
vad=inference.VAD(),
)
usage_collector = metrics.UsageCollector()
@session.on("metrics_collected")
def _on_metrics(ev):
metrics.log_metrics(ev.metrics)
usage_collector.collect(ev.metrics)
async def log_usage():
logger.info(f"Usage: {usage_collector.get_summary()}")
ctx.add_shutdown_callback(log_usage)
await session.start(
agent=InworldAgent(),
room=ctx.room,
room_options=room_io.RoomOptions(),
)
if __name__ == "__main__":
cli.run_app(server)
Combined TTS + STT
from livekit.plugins import inworld
session = AgentSession(
tts=inworld.TTS(voice="Hades"),
stt=inworld.STT(),
# ... llm, etc.
)
Metadata
Release files for livekit-plugins-inworld 1.8.8
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | |
|---|---|---|---|
| livekit_plugins_inworld-1.8.8.tar.gz | 22.1 kB | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| livekit_plugins_inworld-1.8.8-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 46.0 kB
Release files / livekit_plugins_inworld-1.8.8.tar.gz
| Download URL | livekit_plugins_inworld-1.8.8.tar.gz |
|---|---|
| Size | 22.1 kB |
| Tags | Source |
|
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| Tags | Python 3 |
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