Open Source Alternatives to OpenAI

An AI interaction and interface platform that provides access to large language models through ChatGPT and a dedicated API. The software offers a wide range of capabilities including text generation, image generation, data analysis, and vision. It includes specific tools for business teams such as secure workspaces, company knowledge integration, and workspace agents to help automate professional workflows. The platform is deployed via web browsers and mobile applications for iOS and Android. It is used by individuals and organizations for research, coding with Codex, and building custom GPTs. The service provides various model options including GPT-5.6 and GPT-5 Thinking Mini to handle different levels of reasoning and context window requirements. It is used across diverse sectors including life sciences and finance.

Whether you want to cut software costs or escape vendor lock-in, these open source alternatives to OpenAI give you an option you fully own. You can self-host them, so your data stays on infrastructure you control. This page lists 1 open source alternative to OpenAI. The most popular is LocalAI. It uses the MIT license and ships an official Docker image.