Laminar is an open-source full-stack platform focused on AI engineering from first principles. It assists users in collecting, understanding, and leveraging data to enhance the quality of large language model (LLM) applications. Laminar supports tracking for text and image models and will soon support audio models. Key advantages of the product include zero-overhead observability, online evaluations, dataset construction, and LLM chain management. Laminar is fully open-source, easy to self-host, and is well-suited for developers and teams looking to build and manage LLM products.