LangChain Gallery

Lots of people have built some pretty awesome stuff with LangChain. This is a collection of our favorites. If you see any other demos that you think we should highlight, be sure to let us know!

Open Source

HowDoI.ai

This is an experiment in building a large-language-model-backed chatbot. It can hold a conversation, remember previous comments/questions, and answer all types of queries (history, web search, movie data, weather, news, and more).

YouTube Transcription QA with Sources

An end-to-end example of doing question answering on YouTube transcripts, returning the timestamps as sources to legitimize the answer.

QA Slack Bot

This application is a Slack Bot that uses Langchain and OpenAI’s GPT3 language model to provide domain specific answers. You provide the documents.

ThoughtSource

A central, open resource and community around data and tools related to chain-of-thought reasoning in large language models.

LLM Strategy

This Python package adds a decorator llm_strategy that connects to an LLM (such as OpenAI’s GPT-3) and uses the LLM to “implement” abstract methods in interface classes. It does this by forwarding requests to the LLM and converting the responses back to Python data using Python’s @dataclasses.

Zero-Shot Corporate Lobbyist

A notebook showing how to use GPT to help with the work of a corporate lobbyist.

Dagster Documentation ChatBot

A jupyter notebook demonstrating how you could create a semantic search engine on documents in one of your Google Folders

Google Folder Semantic Search

Build a GitHub support bot with GPT3, LangChain, and Python.

Talk With Wind

Record sounds of anything (birds, wind, fire, train station) and chat with it.

ChatGPT LangChain

This simple application demonstrates a conversational agent implemented with OpenAI GPT-3.5 and LangChain. When necessary, it leverages tools for complex math, searching the internet, and accessing news and weather.

GPT Math Techniques

A Hugging Face spaces project showing off the benefits of using PAL for math problems.

GPT Political Compass

Measure the political compass of GPT.

Notion Database Question-Answering Bot

Open source GitHub project shows how to use LangChain to create a chatbot that can answer questions about an arbitrary Notion database.

GPT Index

GPT Index is a project consisting of a set of data structures that are created using GPT-3 and can be traversed using GPT-3 in order to answer queries.

Grover’s Algorithm

Leveraging Qiskit, OpenAI and LangChain to demonstrate Grover’s algorithm

QNimGPT

A chat UI to play Nim, where a player can select an opponent, either a quantum computer or an AI

ReAct TextWorld

Leveraging the ReActTextWorldAgent to play TextWorld with an LLM!

Fact Checker

This repo is a simple demonstration of using LangChain to do fact-checking with prompt chaining.

DocsGPT

Answer questions about the documentation of any project

Misc. Colab Notebooks

Wolfram Alpha in Conversational Agent

Give ChatGPT a WolframAlpha neural implant

Tool Updates in Agents

Agent improvements (6th Jan 2023)

Conversational Agent with Tools (Langchain AGI)

Langchain AGI (23rd Dec 2022)

Proprietary

Daimon

A chat-based AI personal assistant with long-term memory about you.

AI Assisted SQL Query Generator

An app to write SQL using natural language, and execute against real DB.

Clerkie

Stack Tracing QA Bot to help debug complex stack tracing (especially the ones that go multi-function/file deep).

Sales Email Writer

By Raza Habib, this demo utilizes LangChain + SerpAPI + HumanLoop to write sales emails. Give it a company name and a person, this application will use Google Search (via SerpAPI) to get more information on the company and the person, and then write them a sales message.

Question-Answering on a Web Browser

By Zahid Khawaja, this demo utilizes question answering to answer questions about a given website. A followup added this for YouTube videos, and then another followup added it for Wikipedia.