Three AI engines: how often they name the same local business

A Namebeam study of 1,066 engine pairs across 771 question-days found that any two of three AI engines name at least one of the same local businesses 56.8% of the time (95% interval 54.5% to 59.0%). The study covered 54 local-business questions run on 17 days from 2026-10-24 to 2026-11-09 across ChatGPT (OpenAI) gpt-5-mini, Claude (Anthropic) bedrock haiku 4.5, and Gemini (Google) flash lite, with names extracted mechanically by capitalization from a public corpus and matched on canonical form. Namebeam states the figure counts agreement only, not causes or outcomes.

How often three AI engines share the same local business name Study period: 2026-10-24 to 2026-11-09 Finding Any two of three AI engines share at least one business name 56.8% of the time 95 percent interval 54.5 to 59.0 percent : 1066 engine pairs across 771 question-days, 54 questions, 17 run days, 2026-10-24 to 2026-11-09, ChatGPT OpenAI gpt-5-mini, Claude Anthropic bedrock haiku 4.5, Gemini Google flash lite. Chart Method Names were extracted mechanically by capitalisation from the public corpus github.com/mrcrtr1979-droid/namebeam-visibility-index , matched on canonical form. Generic names filtered. Three engines only ChatGPT gpt-5-mini, Claude bedrock haiku 4.5, Gemini flash lite . Local-business questions only. This is a count of agreement, not a measurement of causes or outcomes. Full method method.md | Download pairs CSV pairs.csv | Download slice CSV slice.csv Sample request Get a free sample of the underlying data for one market. License: CC BY 4.0. Credit: Namebeam namebeam.ai .