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Research and methods
Dated advertising facts, source limitations, and reproducible research methods. Compiled findings are separated from study protocols.
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3 resources
Advertising evidence
ChatGPT advertising facts and statistics: a dated evidence guide
Dated ChatGPT advertising facts from primary sources, with reporting periods, research limitations and a downloadable fact register.
Read the guide Research methodsChatGPT Ads tracking errors: a controlled test protocol
A reproducible protocol for testing ChatGPT Ads tracking failures, stable event IDs, consent transitions, and diagnostic coverage.
Read the methodology Research methodsChatGPT Ads performance study: methodology and data requirements
A publication-ready study plan for paid ChatGPT Ads performance with cohort definitions, costs, outcomes, attribution, and limitations.
Read the methodology