techniques

Every Qurtoo article on techniques, newest first.

Techniques
Prompt Caching and Reuse: Design Prompts That Actually Hit the Cache at Scale
Cached input bills at a fraction of the normal rate, but only for a byte-identical prefix. How to order tools, system prompts and agent history so the cache hits on every call.
Brian GagneAugust 10, 2026
Techniques
XML Tags Are the New Markdown: Why Closed Delimiters Beat Free-Form Prompts
The delimiter strategy that Claude, GPT, and Gemini all respond to better than plain English sections
Brian GagneAugust 3, 2026
Techniques
Grounding Prompts With Retrieved Context: The RAG Prompt Patterns That Stop Invented Answers
Stop bolting retrieval onto bad prompts. Design prompts that actually use retrieved context correctly
Brian GagneJuly 27, 2026

Prompt Caching and Reuse: Design Prompts That Actually Hit the Cache at Scale