OpenChatKit

As an open-source chatbot toolkit, OpenChatKit differs from a lone model download because it ships as a full project.

OpenChatKit is an open alternative to ChatGPT that gives developers a base for building both specialized and general-purpose chatbots.

The kit bundles four pieces: an instruction-tuned large language model, customization recipes for adapting that model to a particular job, an extensible retrieval system, and a moderation model.

The retrieval system matters if your chatbot needs to pull in outside documents or data instead of relying only on what the model already knows.

OpenChatKit also comes with tools and processes meant for community contributions, so the project is built to keep improving.

It is a developer resource more than a ready-made chat app.

Expect to do some building yourself, which is the point if you want control over how your chatbot behaves.