@Rick S.
The System Prompt field is designed to receive input that is typically a sentence or two, which means it should be concise yet sufficient to guide the model. While there isn't a strict maximum number of characters or tokens set for the System Prompt field, it is recommended to keep it under 200 characters for optimal performance. This ensures that the prompt is clear and to the point, allowing the model to generate the most relevant and accurate responses. If you have a specific character or token limit in mind for your application, please let me know, and I can assist you in configuring it accordingly.