If you're thinking of switching from one language model to another, such as from OpenAI to Anthropic or Google's Gemini, you might want to think twice. It's not as simple as just plugging in a new model and expecting everything to work seamlessly. In fact, there are some hidden costs and challenges that come with model migration. This guide takes a closer look at what happens when you make the switch and what your team needs to be aware of to make the transition as smooth as possible.