https://ai.nncvision.com AI insights, frontier models, agents, tools and research — explained for people who build things. en Thu, 20 Aug 2026 00:00:00 GMT https://ai.nncvision.com/blogs/rag-or-long-context/ https://ai.nncvision.com/blogs/rag-or-long-context/ Thu, 20 Aug 2026 00:00:00 GMT Context windows grew past a million tokens and everyone declared retrieval dead. It isn't. Here is the actual decision procedure, with the trade-offs that matter in production. engineering Petar Milivojević