Fireworks f1 is a composite AI model specifically designed for complex reasoning, integrating multiple open models at the reasoning layer. By simplifying the process of building composite AIs, Fireworks f1 allows developers to easily access composite AI capabilities through prompting. The model excels in coding, chatting, mathematics, and reasoning use cases, surpassing most open and closed frontier models. The design philosophy of Fireworks f1 is declarative programming, enabling developers to describe their desired goals through prompts without needing to specify how to achieve them.