Overview
CHAI is an AI platform focused on building and deploying social AI chatbots. It provides a comprehensive infrastructure for developing, training, and serving large language models (LLMs) optimized for social interactions. The platform leverages in-house trained LLMs and model blending techniques to enhance user engagement and retention. Key features include custom CUDA kernels for efficient inference, GPU orchestration for scaling, and reward models trained on user signals to optimize chatbot behavior. CHAI's architecture supports multi-cluster, multi-GPU-type serving of hundreds of LLMs, enabling personalized and engaging user experiences. It utilizes reinforcement learning techniques such as PPO, DPO, and GRPO to continuously improve model performance based on user feedback and preferences. CHAI's platform also incorporates advanced features like model blending and Best-of-8 rejection sampling to further enhance the quality of chatbot interactions.