Window.ai

Window.ai is a browser extension that lets users choose which AI model powers the web apps they use. Instead of each developer wiring a chatbot to a specific provider with an API key and a backend, a site built on window.ai asks the user's extension for model access, and the user decides which model answers. The extension can be configured to use models from OpenAI, Google, Anthropic, Together and Cohere, or a model running locally on the user's own computer when privacy matters. The home page demonstrates a chatbot built with no API keys and no backend. Developers building on window.ai therefore avoid managing keys or paying for the end user's usage, and users keep control over where their prompts are sent. The extension also keeps a history of the messages a user sends and receives. The site says this history can be used to train the user's own AI models. The site points to an announcement, documentation and a community group for those who want to build with it or follow its progress. It is aimed at developers who want to add AI features to web apps without handling credentials, and at users who want to bring their own model across sites. The site publishes no pricing and does not state any plan or fee for the extension.