RealChar. - Your Realtime AI Character

🎙️🤖Create, customize and talk to your AI Character/Companion in realtime🎙️🤖

✨ Demo

Try our site at RealChar.ai

Not sure how to pronounce RealChar? Listen to this 👉 audip

Demo settings: Web, GPT4, ElevenLabs with voice clone, Chroma, Google Speech to Text

🎯 Key Features

Easy to use: No coding required to create your own AI character.
Customizable: You can customize your AI character's personality, background, and even voice
Realtime: Talk to or message your AI character in realtime
Multi-Platform: You can talk to your AI character on web, terminal and mobile(Yes. we open source our mobile app)
Most up-to-date AI: We use the most up-to-date AI technology to power your AI character, including OpenAI, Anthropic Claude 2, Chroma, Whisper, ElevenLabs, etc.
Modular: You can easily swap out different modules to customize your flow. Less opinionated, more flexible. Great project to start your AI Engineering journey.

🔬 Tech stack

✅Web: React JS, Vanilla JS, WebSockets
✅Mobile: Swift, WebSockets
✅Backend: FastAPI, SQLite, Docker
✅Data Ingestion: LlamaIndex, Chroma
✅LLM Orchestration: LangChain, Chroma
✅LLM: ReByte, OpenAI GPT3.5/4, Anthropic Claude 2, Anyscale Llama2
✅Speech to Text: Local WhisperX, Local Whisper, OpenAI Whisper API, Google Speech to Text
✅Text to Speech: ElevenLabs, Edge TTS, Google Text to Speech
✅Voice Clone: ElevenLabs

📚 Comparison with existing products

📀 Quick Start - Installation via Docker

Create a new .env file
```
cp .env.example .env
```
Paste your API keys in .env file. A single ReByte or OpenAI API key is enough to get started.

You can also configure other API keys if you have them.
Start the app with docker-compose.yaml
```
docker compose up
```
If you have issues with docker (especially on a non-Linux machine), please refer to https://docs.docker.com/get-docker/ (installation) and https://docs.docker.com/desktop/troubleshoot/overview/ (troubleshooting).
Open http://localhost:3000 and enjoy the app!

💿 Developers - Installation via Python

Step 1. Clone the repo

git clone https://github.com/Shaunwei/RealChar.git && cd RealChar

Step 2. Install requirements

Install portaudio and ffmpeg for audio
```
# for mac
brew install portaudio
brew install ffmpeg
```
```
# for ubuntu
sudo apt update
sudo apt install portaudio19-dev
sudo apt install ffmpeg
```
Note:
- ffmpeg>=4.4 is needed to work with torchaudio>=2.1.0
- Mac users may need to add ffmpeg library path to DYLD_LIBRARY_PATH for torchaudio to work:
```
export DYLD_LIBRARY_PATH=/opt/homebrew/lib:$DYLD_LIBRARY_PATH
```
Then install all python requirements
```
pip install -r requirements.txt
```
If you need a faster local speech to text, install whisperX
```
pip install git+https://github.com/m-bain/whisperx.git
```
Step 3. Create an empty sqlite database if you have not done so before
```
sqlite3 test.db "VACUUM;"
```
Step 4. Run db upgrade
```
alembic upgrade head
```
This ensures your database schema is up to date. Please run this after every time you pull the main branch.
Step 5. Setup .env:
```
cp .env.example .env
```
Update API keys and configs following the instructions in the .env file.

Note that some features require a working login system. You can get your own OAuth2 login for free with Firebase if needed. To enable, set USE_AUTH to true and fill in the FIREBASE_CONFIG_PATH field. Also fill in Firebase configs in client/next-web/.env.

Step 6. Run backend server with cli.py or use uvicorn directly

python cli.py run-uvicorn
# or
uvicorn realtime_ai_character.main:app

Step 7. Run frontend client:
- web client:
  
  Create an .env file under client/next-web/
```
cp client/next-web/.env.example client/next-web/.env
```
  Adjust .env according to the instruction in client/next-web/README.md.
  
  Start the frontend server:
```
python cli.py next-web-dev
# or
cd client/next-web && npm run dev
# or
cd client/next-web && npm run build && npm run start
```
  After running these commands, a local development server will start, and your default web browser will open a new tab/window pointing to this server (usually http://localhost:3000).
- (Optional) Terminal client:
  
  Run the following command in your terminal
```
python client/cli.py
```
- (Optional) mobile client:
  
  open client/mobile/ios/rac/rac.xcodeproj/project.pbxproj in Xcode and run the app
Step 8. Select one character to talk to, then start talking. Use GPT4 for better conversation and Wear headphone for best audio(avoid echo)

Note if you want to remotely connect to a RealChar server, SSL set up is required to establish the audio connection.

👨‍🚀 API Keys and Configurations

1. LLMs

1.1 ReByte API Key

To get your ReByte API key, follow these steps:

Go to the ReByte website and sign up for an account if you haven't already.
Once you're logged in, go to Settings > API Keys.
Generate a new API key by clicking on the "Generate" button.

1.2 (Optional) OpenAI API Token

👇click me

This application utilizes the OpenAI API to access its powerful language model capabilities. In order to use the OpenAI API, you will need to obtain an API token. To get your OpenAI API token, follow these steps: 1. Go to the [OpenAI website](https://beta.openai.com/signup/) and sign up for an account if you haven't already. 1. Once you're logged in, navigate to the [API keys page](https://beta.openai.com/account/api-keys). 1. Generate a new API key by clicking on the "Create API Key" button. (Optional) To use Azure OpenAI API instead, refer to the following section: 1. Set API type in your `.env` file: `OPENAI_API_TYPE=azure` If you want to use the earlier version `2023-03-15-preview`: `OPENAI_API_VERSION=2023-03-15-preview` 2. To set the base URL for your Azure OpenAI resource. You can find this in the Azure portal under your Azure OpenAI resource. `OPENAI_API_BASE=https://your-base-url.openai.azure.com` 3. To set the OpenAI model deployment name for your Azure OpenAI resource. `OPENAI_API_MODEL_DEPLOYMENT_NAME=gpt-35-turbo-16k` 4. To set the OpenAIEmbeddings model deployment name for your Azure OpenAI resource. `OPENAI_API_EMBEDDING_DEPLOYMENT_NAME=text-embedding-ada-002`

1.3 (Optional) Anthropic(Claude 2) API Token

👇click me

To get your Anthropic API token, follow these steps: 1. Go to the [Anthropic website](https://docs.anthropic.com/claude/docs/getting-started-with-claude) and sign up for an account if you haven't already. 1. Once you're logged in, navigate to the [API keys page](https://console.anthropic.com/account/keys). 1. Generate a new API key by clicking on the "Create Key" button.

1.4 (Optional) Anyscale API Token

👇click me

To get your Anyscale API token, follow these steps: 1. Go to the [Anyscale website](https://www.anyscale.com/) and sign up for an account if you haven't already. 1. Once you're logged in, navigate to the [Credentials page](https://app.endpoints.anyscale.com/credentials). 1. Generate a new API key by clicking on the "Generate credential" button.

2. Speech to Text

We support faster-whisper and whisperX as the local speech to text engines. Work with CPU and NVIDIA GPU.

2.1 (Optional) Google Speech-to-Text API

👇click me

To get your Google Cloud API credentials.json, follow these steps: 1. Go to the [GCP website](https://cloud.google.com/speech-to-text/docs/before-you-begin) and sign up for an account if you haven't already. 2. Follow the guide to create a project and enable Speech to Text API 3. Put `google_credentials.json` in the root folder of this project. Check [Create and delete service account keys](https://cloud.google.com/iam/docs/keys-create-delete#iam-service-account-keys-create-console) 4. Change `SPEECH_TO_TEXT_USE` to use `GOOGLE` in your `.env` file

2.2 (Optional) OpenAI Whisper API

👇click me

Same as [OpenAI API Token](#12-optional-openai-api-token)

3. Text to Speech

Edge TTS is the default and is free to use.

3.1 (Optional) ElevenLabs API Key

👇click me

1. Creating an ElevenLabs Account Visit [ElevenLabs](https://beta.elevenlabs.io/) to create an account. You'll need this to access the text to speech and voice cloning features. 1. In your Profile Setting, you can get an API Key.

3.2 (Optional) Google Text-to-Speech API

👇click me

To get your Google Cloud API credentials.json, follow these steps: 1. Go to the [GCP website](https://cloud.google.com/text-to-speech/docs/quickstart-client-libraries) and sign up for an account if you haven't already. 2. Follow the guide to create a project and enable Text to Speech API 3. Put `google_credentials.json` in the root folder of this project. Check [Create and delete service account keys](https://cloud.google.com/iam/docs/keys-create-delete#iam-service-account-keys-create-console)

(Optional) 🔥 Create Your Own Characters

👇click me

### Create Characters Locally see [realtime_ai_character/character_catalog/README.md](realtime_ai_character/character_catalog/README.md) ### Create Characters on ReByte.ai see [docs/rebyte_agent_clone_instructions.md](docs/rebyte_agent_clone_instructions.md)

(Optional) ☎️ Twilio Integration

👇click me

To use [Twilio](https://www.twilio.com/en-us) with RealChar, you need to set up a Twilio account. Then, fill in the following environment variables in your `.env` file: ```sh TWILIO_ACCOUNT_SID=YOUR_TWILIO_ACCOUNT_SID TWILIO_ACCESS_TOKEN=YOUR_TWILIO_ACCESS_TOKEN DEFAULT_CALLOUT_NUMBER=YOUR_PHONE_NUMBER ``` You'll also need to install `torch` and `torchaudio` to use Twilio. Now, you can receive phone calls from your characters by typing `/call YOURNUMBER` in the text box when chatting with your character. Note: only US phone numbers and Elevenlabs voiced characters are supported at the moment.

🆕! Anyscale and LangSmith integration

👇click me

### Anyscale You can now use [Anyscale Endpoint](https://app.endpoints.anyscale.com/landing) to serve Llama-2 models in your RealChar easily! Simply register an account with Anyscale Endpoint. Once you get the API key, set this environment variable in your `.env` file: ``` ANYSCALE_ENDPOINT_API_KEY= ``` By default, we show the largest servable Llama-2 model (70B) in the Web UI. You can change the model name (`meta-llama/Llama-2-70b-chat-hf`) to other models, e.g. 13b or 7b versions. ### LangSmith If you have access to LangSmith, you can edit these environment variables to enable: ``` LANGCHAIN_TRACING_V2=false # default off LANGCHAIN_ENDPOINT=https://api.smith.langchain.com LANGCHAIN_API_KEY=YOUR_LANGCHAIN_API_KEY LANGCHAIN_PROJECT=YOUR_LANGCHAIN_PROJECT ``` And it should work out of the box.

📍 Roadmap

[x] Launch v0.0.4
[x] Create a new character via web UI
[x] Lower conversation latency
[x] Support Twilio
[x] Support ReByte
[x] Persistent conversation*
[ ] Session management*
[ ] Support RAG*
[ ] Support Agents/GPTs*
[ ] Add additional TTS service*

$*$ These features are powered by ReByte platform.

🫶 Contribute to RealChar

Please check out our Contribution Guide!

💪 Contributors

🎲 Community

Join us on Discord

Shaunwei / RealChar

readme

RealChar. - Your Realtime AI Character

✨ Demo

Demo 1 - with Santa Claus!

Demo 2 - with AI Elon about cage fight!

Demo 3 - with AI Raiden about AI and "real" memory

🎯 Key Features

🔬 Tech stack

📚 Comparison with existing products

📀 Quick Start - Installation via Docker

💿 Developers - Installation via Python

👨‍🚀 API Keys and Configurations

1. LLMs

1.1 ReByte API Key

1.2 (Optional) OpenAI API Token

1.3 (Optional) Anthropic(Claude 2) API Token

1.4 (Optional) Anyscale API Token

2. Speech to Text

2.1 (Optional) Google Speech-to-Text API

2.2 (Optional) OpenAI Whisper API

3. Text to Speech

3.1 (Optional) ElevenLabs API Key

3.2 (Optional) Google Text-to-Speech API

(Optional) 🔥 Create Your Own Characters

(Optional) ☎️ Twilio Integration

🆕! Anyscale and LangSmith integration

📍 Roadmap

🫶 Contribute to RealChar

💪 Contributors

🎲 Community