Copp OakCopp Oak asked ChatGPT and Gemini the same 12 questions a homeowner in Savannah, GA, might ask about septic service: who is best, who to call in an emergency, what it costs, who can come this week, and eight more. Each question went to each assistant once, in a fresh chat, between October 20 and October 27, 2026. The 24 answers named 11 different businesses.Sources: https://doi.org/10.5281/zenodo.23745742 (retrieved 2026-10-31)
The 6 businesses named most
| # | Business | Answers naming it (of 24) | ChatGPT (of 12) | Gemini (of 12) | Listed first |
|---|---|---|---|---|---|
| 1 | Gray Septic Solutions | 24 | 12 | 12 | 21 |
| 2 | Septic Works of the Lowcountry | 21 | 12 | 9 | 1 |
| 3 | Reliable Septic Services Inc. | 16 | 6 | 10 | 1 |
| 4 | Coastal Drainage Inc. | 5 | 0 | 5 | 0 |
| 5 | Antees Septic & Drain | 4 | 4 | 0 | 0 |
| 5 | Dirty Money Septic Service | 4 | 4 | 0 | 0 |
Both assistants named Gray Septic Solutions, Septic Works of the Lowcountry and Reliable Septic Services Inc. in at least half of their 12 answers each. Gray Septic Solutions was listed first most often among them: 21 of 24 answers.Sources: https://doi.org/10.5281/zenodo.23745742 (retrieved 2026-10-31)
Did the answers offer a way to book?
4 of 24 answers offered a booking path or named a connector (ChatGPT 3 of 12, Gemini 1 of 12). The other 20 offered neither a booking path nor a connector. Across the full study, 79.1% of sampled ChatGPT/Gemini answers offered neither a booking path nor a connector.Sources: https://doi.org/10.5281/zenodo.23745742 (retrieved 2026-10-31)