Context engineering reshapes AI system design: RAG is now just one tool in a larger system
mdancho84 · x · 2026-11-12
The author argues that understanding context engineering changes how you architect AI systems in 2026, affecting four areas: which data sources your agent can access, how retrieval tools are designed and combined, how you manage token budgets across a rich context window, and how you debug when the model retrieves the wrong thing. The core claim: RAG isn't dead — it's now just one tool inside a much larger system.
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