Cloudflare is releasing two open-source decision models, Clef and Clef-flash, which are designed to make classifications and decisions based on input data. These models are hosted on Workers AI and are compatible with the Jev Decision Index. Clef has a vision encoder, allowing it to classify visual content, and a 64k context window, making it more powerful than other decision models. The models are available for fine-tuning and can be used for various applications, including threat intelligence and customer support.