Three AI engines: how often they name the same local business
A study covering 2026-10-24 to 2026-11-09 found that any two of three AI engines (ChatGPT gpt-5-mini, Claude bedrock haiku 4.5, Gemini flash lite) share at least one business name 56.8% of the time (95 percent interval 54.5 to 59.0 percent), based on 1066 engine pairs across 771 question-days, 54 questions and 17 run days. Names were extracted mechanically by capitalisation from the public corpus and matched on canonical form, with generic names filtered. The study counts agreement only, not causes or outcomes.