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chat-with-local-llms

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Explore how to chat with local Large Language Models

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# Chat with Local LLMS

This repository is full with examples so that you can interact with local Large
Language Models and challenge yourself in building an application.

There are several examples in the [./examples](examples) directory that you can
use.

## Install the prerequisites

Use the `requirements.txt` to install all dependencies

```bash
python -m venv .venv
./.venv/bin/pip install -r requirements.txt
```

### Configure your system

Here is a summary of what this repository will use, including a Retrieval
Augmented Generation Vector database from [Qdrant](https://github.com/qdrant/qdrant):

1. [Qdrant](https://github.com/qdrant/qdrant) for the vector database. We will use an in-memory database for the examples
2. [Llamafile](https://github.com/Mozilla-Ocho/llamafile) or [Ollama](https://github.com/ollama/ollama) for the LLM (alternatively you can use an OpenAI API compatible key and endpoint)
3. [OpenAI's Python API](https://pypi.org/project/openai/) to connect to the LLM after retrieving the vectors response from Qdrant
4. Sentence Transformers to create the embeddings with minimal effort

First, configure your environment variables so that the code examples will know what to load. The `.env` file is a special file that is ignored in the repository but you must create it locally,it ignores the `.env` file to prevent you (and me) from adding these keys by mistake.

This example .env will work for using Phi2 using Ollama:

```
OPENAI_API_BASE="http://localhost:11434/v1"
OPENAI_API_KEY="secret"
MODEL_NAME="phi"
```

And this is for using Llamafile:

```
OPENAI_API_BASE="http://127.0.0.1:8080/v1"
OPENAI_API_KEY="secret"
MODEL_NAME="LLaMA_CPP"
```

### Setup OLLama

For OLLama I recommend using the Phi-2 model. Follow [the instructions for
installation](https://github.com/ollama/ollama?tab=readme-ov-file#ollama) on
your system. These are the steps needed to download Phi2 and run it in your
system:

```
ollama serve
```

And on a separate terminal

```
ollama run phi
```

### Setup Llamafile

For Llamafile I also recommend using the [Phi-2 model](https://github.com/Mozilla-Ocho/llamafile?tab=readme-ov-file#other-example-llamafiles). Download the Llamafile and follow the [instructions for your system](https://github.com/Mozilla-Ocho/llamafile?tab=readme-ov-file#quickstart).

Once the file is downloaded and ready, execute the file. On OSX and Linux
systems you just need to run it. This is how it could look for a phi2 model:

```
./phi-2.Q5_K_M.llamafile
```

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