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<img src="./.github/assets/livekit-mark.png" alt="LiveKit logo" width="100" height="100">
</a>
# Voice AI Assistant with LiveKit Agents
# LiveKit Agents Starter - Python
<p>
<a href="https://cloud.livekit.io/projects/p_/sandbox"><strong>Deploy a sandbox app</strong></a>
•
<a href="https://docs.livekit.io/agents/">LiveKit Agents Docs</a>
•
<a href="https://livekit.io/cloud">LiveKit Cloud</a>
•
<a href="https://blog.livekit.io/">Blog</a>
</p>
A complete starter project for building voice AI apps with [LiveKit Agents for Python](https://github.com/livekit/agents).
A simple voice AI assistant built with [LiveKit Agents for Python](https://github.com/livekit/agents).
The starter project includes:
- A simple voice AI assistant based on the [Voice AI quickstart](https://docs.livekit.io/agents/start/voice-ai/)
- Voice AI pipeline based on [OpenAI](https://docs.livekit.io/agents/integrations/llm/openai/), [Cartesia](https://docs.livekit.io/agents/integrations/tts/cartesia/), and [Deepgram](https://docs.livekit.io/agents/integrations/llm/deepgram/)
- Easily integrate your preferred [LLM](https://docs.livekit.io/agents/integrations/llm/), [STT](https://docs.livekit.io/agents/integrations/stt/), and [TTS](https://docs.livekit.io/agents/integrations/tts/) instead, or swap to a realtime model like the [OpenAI Realtime API](https://docs.livekit.io/agents/integrations/realtime/openai)
- Eval suite based on the LiveKit Agents [testing & evaluation framework](https://docs.livekit.io/agents/testing/)
- [LiveKit Turn Detector](https://docs.livekit.io/agents/build/turns/turn-detector/) for contextually-aware speaker detection, with multilingual support
- [LiveKit Cloud enhanced noise cancellation](https://docs.livekit.io/home/cloud/noise-cancellation/)
- Integrated [metrics and logging](https://docs.livekit.io/agents/build/metrics/)
This starter app is compatible with [SIP-based telephony](https://docs.livekit.io/agents/start/telephony/) or any [custom web/mobile frontend](https://docs.livekit.io/agents/start/frontend/).
## Dev Setup
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Set up the environment by copying `.env.example` to `.env` and filling in the required values:
- `LIVEKIT_URL`
- `LIVEKIT_URL`: Use [LiveKit Cloud](https://cloud.livekit.io/) or [run your own](https://docs.livekit.io/home/self-hosting/)
- `LIVEKIT_API_KEY`
- `LIVEKIT_API_SECRET`
- `OPENAI_API_KEY`
- `DEEPGRAM_API_KEY`
- `OPENAI_API_KEY`: [Get a key](https://platform.openai.com/api-keys) or use your [preferred LLM provider](https://docs.livekit.io/agents/integrations/llm/)
- `DEEPGRAM_API_KEY`: [Get a key](https://console.deepgram.com/) or use your [preferred STT provider](https://docs.livekit.io/agents/integrations/stt/)
- `CARTESIA_API_KEY`: [Get a key](https://play.cartesia.ai/keys) or use your [preferred TTS provider](https://docs.livekit.io/agents/integrations/tts/)
You can also do this automatically using the LiveKit CLI:
You can load the LiveKit environment automatically using the [LiveKit CLI](https://docs.livekit.io/home/cli/cli-setup):
```bash
lk app env -w .env
```
Run the agent in console mode:
## Run the agent
Run this command to speak to your agent directly in your terminal:
```console
uv run python src/agent.py console
```
To run the agent for use with a frontend or telephony, use the `dev` command:
This agent requires a frontend application to communicate with. Use a [starter app](https://docs.livekit.io/agents/start/frontend/#starter-apps), our hosted [Sandbox](https://cloud.livekit.io/projects/p_/sandbox) frontends, or the [LiveKit Agents Playground](https://agents-playground.livekit.io/).
```console
uv run python src/agent.py dev
```
In production, use the `start` command:
Run evals
```console
uv run python src/agent.py start
```
## Web and mobile frontends
To use a prebuilt frontend or build your own, see the [agents frontend guide](https://docs.livekit.io/agents/start/frontend/).
## Telephony
To add a phone number, see the [agents telephony guide](https://docs.livekit.io/agents/start/telephony/).
## Tests and evals
This project includes a complete suite of evals, based on the LiveKit Agents [testing & evaluation framework](https://docs.livekit.io/agents/testing/). To run them, use `pytest`.
```console
uv run pytest evals
```
```
## License
This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.