Edelman and LLYC are the public relations agencies that ChatGPT, Gemini and Perplexity recommend most when someone asks about PR agencies in Mexico: they appear in almost half of the answers. That is the finding of the first edition of the AI Visibility Index of PR agencies in Mexico, which Lithiumpr measured on November 9, 2026, with 36 real buying questions, 3 AI models and 7 repetitions per question: 756 answers per agency.
Which PR agencies does AI recommend in Mexico?
Share of answers in which AI names each agency, with its 95% confidence interval, and number of answers per model (out of 252 possible for each).
| # | Agency | Appears in | 95% interval | Gemini | ChatGPT | Perplexity |
|---|---|---|---|---|---|---|
| 1 | Edelman | 48.8% | 45.3–52.4% | 169 | 144 | 56 |
| 2 | LLYC | 45.4% | 41.9–48.9% | 161 | 154 | 28 |
| 3 | Burson | 29.9% | 26.7–33.3% | 85 | 109 | 32 |
| 4 | Another | 25.5% | 22.6–28.8% | 193 | 0 | 0 |
| 5 | Weber Shandwick | 19.7% | 17.0–22.7% | 103 | 8 | 38 |
| 6 | JeffreyGroup | 19.3% | 16.7–22.3% | 125 | 0 | 21 |
| 7 | Cuadrante | 17.1% | 14.5–19.9% | 112 | 0 | 17 |
| 8 | Zimat | 14.3% | 12.0–17.0% | 71 | 1 | 36 |
| 9 | Eureka & Co | 14.2% | 11.8–16.8% | 107 | 0 | 0 |
| 10 | InfoSol | 12.0% | 9.9–14.6% | 8 | 0 | 83 |
| 11 | Band of Insiders | 9.4% | 7.5–11.7% | 71 | 0 | 0 |
| 12 | Serna Group | 9.3% | 7.4–11.5% | 13 | 0 | 57 |
| 13 | Makken | 8.2% | 6.5–10.4% | 48 | 0 | 14 |
| 14 | FleishmanHillard | 7.9% | 6.2–10.1% | 5 | 48 | 7 |
| 15 | Porter Novelli | 4.4% | 3.1–6.1% | 21 | 4 | 8 |
| 16 | PRLab | 4.1% | 2.9–5.8% | 0 | 0 | 31 |
| 17 | Lithiumpr | 2.8% | 1.8–4.2% | 0 | 0 | 21 |
| 18 | INK PR | 2.1% | 1.3–3.4% | 9 | 0 | 7 |
| 19 | ACHE & Asociados | 1.2% | 0.6–2.2% | 2 | 0 | 7 |
| 20 | Minimalist | 0.9% | 0.4–1.9% | 0 | 0 | 7 |
| 21 | Kostik | 0.0% | 0–0.5% | 0 | 0 | 0 |
| 22 | PluralMX | 0.0% | 0–0.5% | 0 | 0 | 0 |
| 23 | Lobemark | 0.0% | 0–0.5% | 0 | 0 | 0 |
What do the data show?
- Two agencies dominate. Edelman and LLYC appear in 49% and 45% of answers, far ahead of the rest.
- Each model recommends differently. ChatGPT names almost only global networks; Gemini includes more independent Mexican agencies; Perplexity, which searches the web in real time, rewards those present in directories and reviews.
- Independent agencies depend on Perplexity. InfoSol, Serna Group, PRLab and Lithiumpr appear almost only there, because Perplexity cites Clutch, Sortlist and other directories.
- Three agencies never appear in any of the 756 answers.
Which sources does AI cite?
In answers with sources, the most cited were Sortlist (596 times), Clutch (422), RevenueBase (373), LinkedIn (135) and The Manifest (109). For an agency, being well represented in directories and reviews matters more than its own website.
Where does Lithiumpr rank?
Lithiumpr, which publishes this index, appears in 2.8% of answers, in 17th place out of 23, and only on Perplexity. We publish it as is, because an index that favors whoever makes it is useless. In August 2026, with a similar measurement, Lithiumpr appeared in 0%.
How was it measured?
- Questions: 36 questions someone looking for an agency would ask, without naming any agency; for example, “What are the best public relations agencies in Mexico?” or “Which PR agency should I hire to launch a consumer brand in Mexico?”. Questions were asked in Spanish.
- Models: GPT-4o-mini (OpenAI), Gemini Flash (Google) and Sonar (Perplexity), queried through their APIs on November 9, 2026.
- Repetitions: 7 per question and model, because AI never answers the same way twice.
- Agencies: a fixed list of 23 agencies. An agency not on the list may appear in answers without being counted here.
What are the limits of this index?
Each model’s API does not answer exactly like the app the public uses, and results change over time. That is why we measure with repetitions, publish confidence intervals and will repeat the index every quarter. If your agency wants to be included in the next edition or you have a correction, write to us at lithiumpr.mx.
Frequently asked questions
Which PR agencies does ChatGPT recommend in Mexico?
In the November 2026 AI Visibility Index, ChatGPT mostly named global networks such as LLYC, Edelman and Burson.
What is the AI Visibility Index of PR agencies in Mexico?
A quarterly measurement by Lithiumpr of how often ChatGPT, Gemini and Perplexity name 23 PR agencies when asked 36 real buying questions, 7 times each.
Which sources does AI cite about PR agencies in Mexico?
Mostly directories and reviews: Sortlist, Clutch, RevenueBase, LinkedIn and The Manifest.
