Predibase

This notebook shows how you can use Predibase-hosted LLM’s within Llamaindex. You can add Predibase to your existing Llamaindex worklow to:

  1. Deploy and query pre-trained or custom open source LLM’s without the hassle

  2. Operationalize an end-to-end Retrieval Augmented Generation (RAG) system

  3. Fine-tune your own LLM in just a few lines of code

Getting Started

  1. Sign up for a free Predibase account here

  2. Create an Account

  3. Go to Settings > My profile and Generate a new API Token.

!pip install llama-index --quiet
!pip install predibase --quiet
!pip install sentence-transformers --quiet
import os

os.environ["PREDIBASE_API_TOKEN"] = "{PREDIBASE_API_TOKEN}"
from llama_index.llms import PredibaseLLM

Flow 1: Query Predibase LLM directly

llm = PredibaseLLM(model_name="llama-2-13b", temperature=0.3, max_new_tokens=512)
# You can query any HuggingFace or fine-tuned LLM that's hosted on Predibase
result = llm.complete("Can you recommend me a nice dry white wine?")
print(result)

Flow 2: Retrieval Augmented Generation (RAG) with Predibase LLM

from llama_index import VectorStoreIndex, SimpleDirectoryReader, ServiceContext

Load Documents

documents = SimpleDirectoryReader("../paul_graham_essay/data").load_data()

Configure Predibase LLM

llm = PredibaseLLM(
    model_name="llama-2-13b", temperature=0.3, max_new_tokens=400, context_window=1024
)
service_context = ServiceContext.from_defaults(
    chunk_size=1024, llm=llm, embed_model="local:BAAI/bge-small-en-v1.5"
)

Setup and Query Index

index = VectorStoreIndex.from_documents(documents, service_context=service_context)
query_engine = index.as_query_engine()
response = query_engine.query("What did the author do growing up?")
print(response)