Multi-modal LLMs enable visual assistants that can perform question-answering about images.
This template create a visual assistant for slide decks, which often contain visuals such as graphs or figures.
It uses OpenCLIP embeddings to embed all of the slide images and stores them in Chroma.
Given a question, relevat slides are retrieved and passed to GPT-4V for answer synthesis.
Supply a slide deck as pdf in the
By default, this template has a slide deck about Q3 earnings from DataDog, a public techologyy company.
Example questions to ask can be:
How many customers does Datadog have?
What is Datadog platform % Y/Y growth in FY20, FY21, and FY22?
To create an index of the slide deck, run:
This template will use OpenCLIP multi-modal embeddings to embed the images.
You can select different embedding model options (see results here).
The first time you run the app, it will automatically download the multimodal embedding model.
By default, LangChain will use an embedding model with moderate performance but lower memory requirments,
You can choose alternative
OpenCLIPEmbeddings models in
vectorstore_mmembd = Chroma(
The app will retrieve images based on similarity between the text input and the image, which are both mapped to multi-modal embedding space. It will then pass the images to GPT-4V.
OPENAI_API_KEY environment variable to access the OpenAI GPT-4V.
To use this package, you should first have the LangChain CLI installed:
pip install -U langchain-cli
To create a new LangChain project and install this as the only package, you can do:
langchain app new my-app --package rag-chroma-multi-modal
If you want to add this to an existing project, you can just run:
langchain app add rag-chroma-multi-modal
And add the following code to your
from rag_chroma_multi_modal import chain as rag_chroma_multi_modal_chain
add_routes(app, rag_chroma_multi_modal_chain, path="/rag-chroma-multi-modal")
(Optional) Let's now configure LangSmith. LangSmith will help us trace, monitor and debug LangChain applications. LangSmith is currently in private beta, you can sign up here. If you don't have access, you can skip this section
export LANGCHAIN_PROJECT=<your-project> # if not specified, defaults to "default"
If you are inside this directory, then you can spin up a LangServe instance directly by:
This will start the FastAPI app with a server is running locally at http://localhost:8000
We can see all templates at http://127.0.0.1:8000/docs We can access the playground at http://127.0.0.1:8000/rag-chroma-multi-modal/playground
We can access the template from code with:
from langserve.client import RemoteRunnable
runnable = RemoteRunnable("http://localhost:8000/rag-chroma-multi-modal")