llama.cpp/docs/index.md
2023-04-05 17:44:25 -04:00

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# Getting Started
## 🦙 Python Bindings for `llama.cpp`
[![Documentation](https://img.shields.io/badge/docs-passing-green.svg)](https://abetlen.github.io/llama-cpp-python)
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Simple Python bindings for **@ggerganov's** [`llama.cpp`](https://github.com/ggerganov/llama.cpp) library.
This package provides:
- Low-level access to C API via `ctypes` interface.
- High-level Python API for text completion
- OpenAI-like API
- LangChain compatibility
## Installation
Install from PyPI:
```bash
pip install llama-cpp-python
```
## High-level API
```python
>>> from llama_cpp import Llama
>>> llm = Llama(model_path="models/7B/...")
>>> output = llm("Q: Name the planets in the solar system? A: ", max_tokens=32, stop=["Q:", "\n"], echo=True)
>>> print(output)
{
"id": "cmpl-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
"object": "text_completion",
"created": 1679561337,
"model": "models/7B/...",
"choices": [
{
"text": "Q: Name the planets in the solar system? A: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto.",
"index": 0,
"logprobs": None,
"finish_reason": "stop"
}
],
"usage": {
"prompt_tokens": 14,
"completion_tokens": 28,
"total_tokens": 42
}
}
```
## Web Server
`llama-cpp-python` offers a web server which aims to act as a drop-in replacement for the OpenAI API.
This allows you to use llama.cpp compatible models with any OpenAI compatible client (language libraries, services, etc).
To install the server package and get started:
```bash
pip install llama-cpp-python[server]
export MODEL=./models/7B
python3 -m llama_cpp.server
```
Navigate to [http://localhost:8000/docs](http://localhost:8000/docs) to see the OpenAPI documentation.
## Low-level API
The low-level API is a direct `ctypes` binding to the C API provided by `llama.cpp`.
The entire API can be found in [llama_cpp/llama_cpp.py](https://github.com/abetlen/llama-cpp-python/blob/master/llama_cpp/llama_cpp.py) and should mirror [llama.h](https://github.com/ggerganov/llama.cpp/blob/master/llama.h).
## Development
This package is under active development and I welcome any contributions.
To get started, clone the repository and install the package in development mode:
```bash
git clone git@github.com:abetlen/llama-cpp-python.git
git submodule update --init --recursive
# Will need to be re-run any time vendor/llama.cpp is updated
python3 setup.py develop
```
## API Reference
::: llama_cpp.Llama
options:
members:
- __init__
- tokenize
- detokenize
- reset
- eval
- sample
- generate
- create_embedding
- embed
- create_completion
- __call__
- create_chat_completion
- token_bos
- token_eos
show_root_heading: true
::: llama_cpp.llama_cpp
options:
show_if_no_docstring: true
## License
This project is licensed under the terms of the MIT license.