GPT-3 Sandbox is an open-source Python library that makes it dramatically easier to build interactive web demos on top of OpenAI’s GPT-3 API. Instead of wiring up API calls, prompt plumbing and a front end from scratch, you describe what your demo should do in a few lines of Python and let the sandbox handle the interaction layer. The project has collected 2,866 stars on GitHub.
Released in the first wave of GPT-3 experimentation, GPT-3 Sandbox was built to lower the barrier between an idea for a language-model app and a shareable, clickable demo. You define the prompt behaviour and input/output flow in Python, and the library renders a working web interface around it, so prototypes that would normally take days of glue code come together in an afternoon. It is published under the MIT license and remains a neat historical artefact of the GPT-3 era, as well as a still-usable prototyping helper for simple completion-style apps.
GPT-3 Sandbox is completely free and open source under the MIT license. You only need your own OpenAI API key, and any API usage is billed by OpenAI under your own account.
GPT-3 Sandbox suits developers, students and tinkerers who want to prototype simple GPT-3 style applications and demos quickly. Note that the repository was last updated in 2023 and targets the original GPT-3 API era, so treat it as a prototyping aid and learning resource rather than an actively maintained production framework.