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GPT-5 won't fix what GPT-4 broke. In a controlled test, the same language model hit 63% task completion with structured grounding and just 23% without it. The variable that drives healthcare interface effectiveness isn't the model. It's dialogue structure. Here's the evidence, a four-type taxonomy, and what it means for build-vs-buy decisions.
article · 8 min · May 18, 2026