Thank you for the response. I have tried some of these, made all the context windows larger and relevance thresholds very high. Not sure if others have the same problem, but the assistants still seem to just make up information even when you ask specific questions about the knowledge base and give the assistant pre-defined instructions to get answers from there. Are there any best practices on how to reference the knowledge base in the instructions (i.e. should you say ‘reference your knowledge base’, or ‘reference xyz.pdf attached’)? I give the same instructions and document to GPT assistant in GPT PLUS environment and it works fine (even in the openAI developer environment with the same instructions it works better).