#LLM

GitHub Models shuts down for good on July 30, 2026 — this guide walks through finding every place your code depends on it and migrating to Azure AI Foundry, OpenRouter, a direct provider API, or a local model, with working code.

Context engineering, not prompt engineering, is what keeps AI agents coherent past a few turns. This guide covers the four core techniques (write, select, compress, isolate) with runnable Python examples for each.