
3/9/2026
What this post added
This post defines and elaborates on the concept of 'context engineering' as a critical discipline for building reliable and high-performing AI systems and agents. It details the components of context (content, structural, task, activity layers) and the inputs to an LLM's context window (system instructions, user input, short-term memory, long-term memory, RAG, tool calls/outputs, structured output formats). The post emphasizes how effective context engineering leads to higher accuracy, faster outputs, more aligned decision-making, lower costs, and safer AI by providing models with curated, structured, and relevant information, differentiating it from prompt engineering.