Kiln is a powerful and free desktop application designed for the entire AI development process. It supports tasks such as evaluations, prompt optimization, fine-tuning, and synthetic data generation, all integrated into a single platform. With an intuitive interface available for macOS, Windows, and Linux, Kiln facilitates collaboration between team members, allowing non-technical users to contribute effectively without needing to code. Key features include an Eval Builder for auto-generating evaluations and an AI Assistant that helps optimize tasks and run experiments.

The application also offers a robust open-source Python library that mirrors its functionality, enabling seamless deployment of AI tasks and models. Users can build agents, utilize retrieval-augmented generation (RAG), and manage synthetic data generation effortlessly. With support for over 190 tested models, Kiln ensures flexibility in model selection and deployment, all while maintaining data security through local-first operation.