├── .env.example ├── .gitignore ├── LICENSE ├── README.md ├── main.py └── requirements.txt /.env.example: -------------------------------------------------------------------------------- 1 | LIVEKIT_URL=XXXXXX 2 | LIVEKIT_API_KEY=XXXXXX 3 | LIVEKIT_API_SECRET=XXXXXX 4 | 5 | DEEPGRAM_API_KEY=XXXXXX 6 | CARTESIA_API_KEY=XXXXXX 7 | CEREBRAS_API_KEY=XXXXXX 8 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | # Byte-compiled / optimized / DLL files 2 | __pycache__/ 3 | *.py[cod] 4 | *$py.class 5 | 6 | # C extensions 7 | *.so 8 | 9 | # Distribution / packaging 10 | .Python 11 | build/ 12 | develop-eggs/ 13 | dist/ 14 | downloads/ 15 | eggs/ 16 | .eggs/ 17 | lib/ 18 | lib64/ 19 | parts/ 20 | sdist/ 21 | var/ 22 | wheels/ 23 | share/python-wheels/ 24 | *.egg-info/ 25 | .installed.cfg 26 | *.egg 27 | MANIFEST 28 | 29 | # PyInstaller 30 | # Usually these files are written by a python script from a template 31 | # before PyInstaller builds the exe, so as to inject date/other infos into it. 32 | *.manifest 33 | *.spec 34 | 35 | # Installer logs 36 | pip-log.txt 37 | pip-delete-this-directory.txt 38 | 39 | # Unit test / coverage reports 40 | htmlcov/ 41 | .tox/ 42 | .nox/ 43 | .coverage 44 | .coverage.* 45 | .cache 46 | nosetests.xml 47 | coverage.xml 48 | *.cover 49 | *.py,cover 50 | .hypothesis/ 51 | .pytest_cache/ 52 | cover/ 53 | 54 | # Translations 55 | *.mo 56 | *.pot 57 | 58 | # Django stuff: 59 | *.log 60 | local_settings.py 61 | db.sqlite3 62 | db.sqlite3-journal 63 | 64 | # Flask stuff: 65 | instance/ 66 | .webassets-cache 67 | 68 | # Scrapy stuff: 69 | .scrapy 70 | 71 | # Sphinx documentation 72 | docs/_build/ 73 | 74 | # PyBuilder 75 | .pybuilder/ 76 | target/ 77 | 78 | # Jupyter Notebook 79 | .ipynb_checkpoints 80 | 81 | # IPython 82 | profile_default/ 83 | ipython_config.py 84 | 85 | # pyenv 86 | # For a library or package, you might want to ignore these files since the code is 87 | # intended to run in multiple environments; otherwise, check them in: 88 | # .python-version 89 | 90 | # pipenv 91 | # According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control. 92 | # However, in case of collaboration, if having platform-specific dependencies or dependencies 93 | # having no cross-platform support, pipenv may install dependencies that don't work, or not 94 | # install all needed dependencies. 95 | #Pipfile.lock 96 | 97 | # poetry 98 | # Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control. 99 | # This is especially recommended for binary packages to ensure reproducibility, and is more 100 | # commonly ignored for libraries. 101 | # https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control 102 | #poetry.lock 103 | 104 | # pdm 105 | # Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control. 106 | #pdm.lock 107 | # pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it 108 | # in version control. 109 | # https://pdm.fming.dev/latest/usage/project/#working-with-version-control 110 | .pdm.toml 111 | .pdm-python 112 | .pdm-build/ 113 | 114 | # PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm 115 | __pypackages__/ 116 | 117 | # Celery stuff 118 | celerybeat-schedule 119 | celerybeat.pid 120 | 121 | # SageMath parsed files 122 | *.sage.py 123 | 124 | # Environments 125 | .env 126 | .venv 127 | env/ 128 | venv/ 129 | ENV/ 130 | env.bak/ 131 | venv.bak/ 132 | 133 | # Spyder project settings 134 | .spyderproject 135 | .spyproject 136 | 137 | # Rope project settings 138 | .ropeproject 139 | 140 | # mkdocs documentation 141 | /site 142 | 143 | # mypy 144 | .mypy_cache/ 145 | .dmypy.json 146 | dmypy.json 147 | 148 | # Pyre type checker 149 | .pyre/ 150 | 151 | # pytype static type analyzer 152 | .pytype/ 153 | 154 | # Cython debug symbols 155 | cython_debug/ 156 | 157 | # PyCharm 158 | # JetBrains specific template is maintained in a separate JetBrains.gitignore that can 159 | # be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore 160 | # and can be added to the global gitignore or merged into this file. For a more nuclear 161 | # option (not recommended) you can uncomment the following to ignore the entire idea folder. 162 | #.idea/ 163 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | MIT License 2 | 3 | Copyright (c) 2024 Russ d'Sa 4 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy 6 | of this software and associated documentation files (the "Software"), to deal 7 | in the Software without restriction, including without limitation the rights 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 | copies of the Software, and to permit persons to whom the Software is 10 | furnished to do so, subject to the following conditions: 11 | 12 | The above copyright notice and this permission notice shall be included in all 13 | copies or substantial portions of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 | SOFTWARE. 22 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Insanely fast AI voice assistant in 50 LOC 2 | 3 | Demo: [https://cerebras.vercel.app](https://cerebras.vercel.app) 4 | 5 | This repo contains everything you need to run your own AI voice assistant that responds to you in less than 500ms. 6 | 7 | It uses: 8 | - 🌐 [LiveKit](https://github.com/livekit) transport 9 | - 👂 [Deepgram](https://deepgram.com/) STT 10 | - 🧠 [Cerebras](https://inference.cerebras.ai/) LLM 11 | - 🗣️ [Cartesia](https://cartesia.ai/) TTS 12 | 13 | ## Run the assistant 14 | 15 | 1. `python -m venv .venv` 16 | 2. `source .venv/bin/activate` 17 | 3. `pip install -r requirements.txt` 18 | 4. `cp .env.example .env` 19 | 5. add values for keys in `.env` 20 | 6. `python main.py dev` 21 | 22 | ## Run a client 23 | 24 | 1. Go to the [playground](https://agents-playground.livekit.io/#cam=0&mic=1&video=0&audio=1&chat=0&theme_color=amber) (code [here](https://github.com/livekit/agents-playground)) 25 | 2. Choose the same LiveKit Cloud project you used in the agent's `.env` and click `Connect` 26 | -------------------------------------------------------------------------------- /main.py: -------------------------------------------------------------------------------- 1 | import os 2 | import asyncio 3 | 4 | from livekit.agents import JobContext, WorkerOptions, cli, JobProcess 5 | from livekit.agents.llm import ( 6 | ChatContext, 7 | ChatMessage, 8 | ) 9 | from livekit.agents.voice_assistant import VoiceAssistant 10 | from livekit.plugins import deepgram, silero, cartesia, openai 11 | 12 | from dotenv import load_dotenv 13 | 14 | load_dotenv() 15 | 16 | 17 | def prewarm(proc: JobProcess): 18 | proc.userdata["vad"] = silero.VAD.load() 19 | 20 | 21 | async def entrypoint(ctx: JobContext): 22 | initial_ctx = ChatContext( 23 | messages=[ 24 | ChatMessage( 25 | role="system", 26 | content="You are a voice assistant. Pretend we're having a human conversation, no special formatting or headings, just natural speech.", 27 | ) 28 | ] 29 | ) 30 | 31 | assistant = VoiceAssistant( 32 | vad=ctx.proc.userdata["vad"], 33 | stt=deepgram.STT(), 34 | llm=openai.LLM( 35 | base_url="https://api.cerebras.ai/v1", 36 | api_key=os.environ.get("CEREBRAS_API_KEY"), 37 | model="llama3.1-8b", 38 | ), 39 | tts=cartesia.TTS(voice="248be419-c632-4f23-adf1-5324ed7dbf1d"), 40 | chat_ctx=initial_ctx, 41 | ) 42 | 43 | await ctx.connect() 44 | assistant.start(ctx.room) 45 | await asyncio.sleep(1) 46 | await assistant.say("Hi there, how are you doing today?", allow_interruptions=True) 47 | 48 | 49 | if __name__ == "__main__": 50 | cli.run_app(WorkerOptions(entrypoint_fnc=entrypoint, prewarm_fnc=prewarm)) 51 | -------------------------------------------------------------------------------- /requirements.txt: -------------------------------------------------------------------------------- 1 | livekit-agents 2 | livekit-plugins-openai 3 | livekit-plugins-deepgram 4 | livekit-plugins-silero 5 | livekit-plugins-cartesia 6 | python-dotenv --------------------------------------------------------------------------------