Arize has recently evaluated several large language models (LLMs) for time series anomaly detection, focusing on the o1-preview model. The evaluation involved analyzing hundreds of time series data points from various global cities and detecting significant deviations in these metrics. o1-preview significantly outperformed other models in anomaly detection, marking a leap forward for time series analysis in LLMs. However, its processing speed remains a challenge. Arize Co-pilot's future may include model selection based on task complexity and accuracy requirements, with the potential for swapping models in and out as needed.