Moving beyond APIs – building custom LLM pipelines with LangChain
LangChain is an open source Python and JavaScript library for building workflows and systems using LLMs such as GPT-3.
Created by Harrison Chase, LangChain initially focused on streamlining integration with OpenAI APIs. It has since expanded to support other LLMs, including models such as Anthropic’s Claude.
The library implements techniques from the ReAct paper published in 2022. ReAct demonstrates prompting methods that allow LLMs to engage in reasoning by maintaining a chain-of-thought context. Models can also take action by leveraging tools such as internet search to gather information.
This combination, referred to as ReAct, enables LLMs to solve problems more effectively by thinking through logic and bringing in outside knowledge. LangChain codifies these techniques into developer-friendly frameworks.
LangChain supports a wide range of LLMs from various providers, including the following...
