FireOptimizer is an adaptation engine introduced by Fireworks to optimize AI model performance by customizing them for specific use cases, focusing on enhancing latency and quality through techniques like adaptive speculative execution. This feature allows users to achieve up to a 3x reduction in latency by using profile-driven customization and automatic training of draft models, which are tailored to the unique requirements of their workload. By improving the accuracy, or "hit rate," of these draft models, FireOptimizer ensures faster and more efficient inference processes, making it especially beneficial for specialized scenarios where generic models fall short. The system automates the optimization process, requiring minimal manual intervention from users, and emphasizes data privacy and security by using customer-provided data solely for training purposes before deletion. Companies such as Cursor and Hume have reported substantial improvements in latency, enhancing user experiences and enabling real-time interactions. FireOptimizer is available for enterprise deployments, with plans to expand its availability on Fireworks' public platform.