Research

What AI engines tell engineers, and why.

Primary research on how answer engines handle materials and manufacturing questions. Every study states its method, sample and limits, and we publish code and data where client confidentiality allows.

Engineering AnswersOctober 28, 2026What AI Tells Engineers: A Pilot Study of ChatGPT and Claude on Materials and Manufacturing QuestionsWe put 52 engineering questions to ChatGPT and Claude and traced the 1,075 sources behind 156 answers. Claude answered most questions without searching; established suppliers' own pages were a minority of what either engine cited; and the two engines barely agreed on sources.Read the paper →

Engine research

How answer engines choose their sources

Controlled experiments run with Assay, the measurement engine behind Reference Grade and Homiere, published on homiere.com.

Assay engine researchWhere does a ChatGPT answer come from?Cache, index and live fetch in OpenAI's search stack, measured from both sides.Read on homiere.com →Assay engine researchWhen does the model look it up?Parametric knowledge, controlled retrieval and how answer engines arbitrate between them.Read on homiere.com →

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