The Model Swap Workshop: GPT-5.5 vs Kimi vs DeepSeek vs Mistral｜AI Engineer

Microsoft engineer Pamela Fox conducted a comparative analysis of GPT-5.5, Kimi, DeepSeek, and Mistral to evaluate the practical challenges of switching between different large language models. The demonstration highlights that while developers can easily swap model backends, maintaining consistent performance and output quality requires rigorous measurement and testing.