Prompt Engineering

3 articles

LLM Engineering • Sep 15, 2026

How to Migrate a Large System Prompt to Ollama Without Breaking It

Migrate a large system prompt to Ollama and it can burn 14% of a 65K context window before the first turn. What breaks, why, and the fix that worked.

8 min read

AI Coding Agents & DX • Aug 14, 2026

Cut agent tool call cost: GitHub's 20% fix was a prompt rewrite

Agent tool call cost jumped after you gave it better tools? GitHub hit that on Copilot code review and won ~20% back with a prompt rewrite, not new tools.

9 min read

LLM Engineering • Aug 4, 2026

LLM Eval Framework: Grade Prompts, Models and Harnesses

An LLM eval framework turns vibes into scores. How smevals structures tasks, configs, runners and graders — and how to ship your first eval today.

10 min read