The OpenAI PHP SDK which is a third party community resource is also massive and the ChatGPT integration doesn’t want to spend 10 bazillion tokens reading every file. It is frustrating, but we are still in the early days. I was able to write my own Assistants v2 integration in one PHP file after many iterations, but it lacks the capability to handle function definitions at the present time. The Assistants v2 API is significantly more complex than Completions, but if you want it to have a persistent memory this is one of the few ways to do it, other than repeating back old text to it or using a vector store.