Since Anthropic released Claude Opus 4.7 on April 16, 2026, a consistent complaint has rippled through developer communities: it feels slower. Threads tell roughly the same story — the prompts that worked perfectly on Opus 4.6 now take noticeably longer to return, sometimes pause for what feels like forever
Every week someone posts about AI hallucination like it's a mystery. It's not. A 2025 Frontiers in AI study measured it: vague, multi-objective prompts hallucinate 38.3% of the time. Structured, single-focus prompts? 18.1%. That's a 20-point accuracy gap from how you write
