Goppa Research · AI local index
Measured October 2026. We asked 5 buying questions, in the local language, to ChatGPT, Google AI Overview (searched from Porto) and Perplexity, and counted which businesses each answer recommended.
| Business | ChatGPT | Google AI Overview | Perplexity | All |
|---|---|---|---|---|
| Dentalcore | 5 of 5 | 0 of 5 | 3 of 5 | 8 of 15 |
| MALO CLINIC Porto | 3 of 5 | 0 of 5 | 3 of 5 | 6 of 15 |
| Clínica Dentária Implantare | 5 of 5 | 0 of 5 | 0 of 5 | 5 of 15 |
| Alinea Premium Oral Care | 0 of 5 | 0 of 5 | 4 of 5 | 4 of 15 |
| Clínica Médico-Dentária da Prelada | 4 of 5 | 0 of 5 | 0 of 5 | 4 of 15 |
| Implantes Dentários Porto | 4 of 5 | 0 of 5 | 0 of 5 | 4 of 15 |
| AIC – Advanced Implantology Center | 0 of 5 | 0 of 5 | 3 of 5 | 3 of 15 |
| Cempre - Clínica de Medicina Dentária | 3 of 5 | 0 of 5 | 0 of 5 | 3 of 15 |
| Advanced Implantology Center (AIC) | 0 of 5 | 0 of 5 | 2 of 5 | 2 of 15 |
| Bioimplantes | 2 of 5 | 0 of 5 | 0 of 5 | 2 of 15 |
| Clínica Bessa | 2 of 5 | 0 of 5 | 0 of 5 | 2 of 15 |
| Dra. Kátia Fragoso | 0 of 5 | 0 of 5 | 2 of 5 | 2 of 15 |
| Estúdio Oral Medicina Dentária | 0 of 5 | 0 of 5 | 2 of 5 | 2 of 15 |
| Facial Clinic Porto | 2 of 5 | 0 of 5 | 0 of 5 | 2 of 15 |
| Oraldouro | 2 of 5 | 0 of 5 | 0 of 5 | 2 of 15 |
| OralKlass | 0 of 5 | 0 of 5 | 2 of 5 | 2 of 15 |
| The North Clinic Porto | 2 of 5 | 0 of 5 | 0 of 5 | 2 of 15 |
| Advanced Implantology Center | 0 of 5 | 1 of 5 | 0 of 5 | 1 of 15 |
| Bocca Clínica | 0 of 5 | 0 of 5 | 1 of 5 | 1 of 15 |
| Clínica Dentária Cerejeira & Leão | 0 of 5 | 0 of 5 | 1 of 5 | 1 of 15 |
| Clínica Implantare | 0 of 5 | 0 of 5 | 1 of 5 | 1 of 15 |
| Clínica PCMFG | 1 of 5 | 0 of 5 | 0 of 5 | 1 of 15 |
| Clínica Prof. Machado Capelas | 0 of 5 | 1 of 5 | 0 of 5 | 1 of 15 |
| Clínica Raiz – Medicina Dentária | 1 of 5 | 0 of 5 | 0 of 5 | 1 of 15 |
| Dent’Art | 0 of 5 | 0 of 5 | 1 of 5 | 1 of 15 |
| Dra. Kátia Fragoso / KAVI Art Clinic | 0 of 5 | 1 of 5 | 0 of 5 | 1 of 15 |
| Implantare | 0 of 5 | 0 of 5 | 1 of 5 | 1 of 15 |
| Molar Clinic | 0 of 5 | 1 of 5 | 0 of 5 | 1 of 15 |
| My Dental Center Porto | 0 of 5 | 0 of 5 | 1 of 5 | 1 of 15 |
| Oralklass - Clínicas Dentárias | 1 of 5 | 0 of 5 | 0 of 5 | 1 of 15 |
| Porto Implantes | 1 of 5 | 0 of 5 | 0 of 5 | 1 of 15 |
| Zenha Implantologia | 0 of 5 | 0 of 5 | 1 of 5 | 1 of 15 |
Each question was asked once to each assistant on 2026-10-21. "2 of 5" means the business was recommended in 2 of the 5 answers that assistant gave. An answer that failed is left out of the count. When Google shows no AI Overview for a question, nobody is named there. Assistants change their answers between asks, so a small difference is not a ranking.
We list only businesses an assistant recommended. Being named in an answer is not an endorsement by Goppa, and not being listed here says nothing about a business.
Is your business missing? See who ChatGPT names instead of you: free, with the exact question and the answer.