System Prompt

Should the system message contribute to the SFT loss?

Your GPT-5.5 call bills 30 percent more tokens than the user prompt plus system instruction. Where are the invisible tokens?

What does 'persona prompting' (or role-based prompting) actually do and where does it stop being useful?

Which of the following are recommended directives for a production RAG system prompt to maximize grounding? Select all that apply.

Which of the following content types belong in the SYSTEM message (not the user message) in a production chat-style prompt?

What are the three message roles in a chat-style LLM prompt and what does each represent?

Define prompt engineering and identify what it actually touches.