gpt4all-j 0.2.6

Python bindings for the C++ port of GPT4All-J model.

GPT4All-J

Python bindings for the C++ port of GPT4All-J model.

Please migrate to ctransformers library which supports more models and has more features.

Installation

pip install gpt4all-j

Download the model from here.

Usage

from gpt4allj import Model

model = Model('/path/to/ggml-gpt4all-j.bin')

print(model.generate('AI is going to'))

Run in Google Colab

If you are getting illegal instruction error, try using instructions='avx' or instructions='basic':

model = Model('/path/to/ggml-gpt4all-j.bin', instructions='avx')

If it is running slow, try building the C++ library from source. Learn more

Parameters

model.generate(prompt,
               seed=-1,
               n_threads=-1,
               n_predict=200,
               top_k=40,
               top_p=0.9,
               temp=0.9,
               repeat_penalty=1.0,
               repeat_last_n=64,
               n_batch=8,
               reset=True,
               callback=None)

reset

If True, context will be reset. To keep the previous context, use reset=False.

model.generate('Write code to sort numbers in Python.')
model.generate('Rewrite the code in JavaScript.', reset=False)

callback

If a callback function is passed, it will be called once per each generated token. To stop generating more tokens, return False inside the callback function.

def callback(token):
    print(token)

model.generate('AI is going to', callback=callback)

LangChain

LangChain is a framework for developing applications powered by language models. A LangChain LLM object for the GPT4All-J model can be created using:

from gpt4allj.langchain import GPT4AllJ

llm = GPT4AllJ(model='/path/to/ggml-gpt4all-j.bin')

print(llm('AI is going to'))

If you are getting illegal instruction error, try using instructions='avx' or instructions='basic':

llm = GPT4AllJ(model='/path/to/ggml-gpt4all-j.bin', instructions='avx')

It can be used with other LangChain modules:

from langchain import PromptTemplate, LLMChain

template = """Question: {question}

Answer:"""

prompt = PromptTemplate(template=template, input_variables=['question'])

llm_chain = LLMChain(prompt=prompt, llm=llm)

print(llm_chain.run('What is AI?'))

Parameters

llm = GPT4AllJ(model='/path/to/ggml-gpt4all-j.bin',
               seed=-1,
               n_threads=-1,
               n_predict=200,
               top_k=40,
               top_p=0.9,
               temp=0.9,
               repeat_penalty=1.0,
               repeat_last_n=64,
               n_batch=8,
               reset=True)

C++ Library

To build the C++ library from source, please see gptj.cpp. Once you have built the shared libraries, you can use them as:

from gpt4allj import Model, load_library

lib = load_library('/path/to/libgptj.so', '/path/to/libggml.so')

model = Model('/path/to/ggml-gpt4all-j.bin', lib=lib)

License

MIT