FR
▲ Judge.me +9 pts in ChatGPT▼ Yotpo −6 pts in ChatGPT▲ Brevo +27 pts in Gemini▲ Klaviyo +4 pts in Perplexity▲ Gorgias +3 pts in AI Overviews▼ Omnisend −2 pts in ChatGPT▲ Loox +5 pts in Perplexity▲ Splio +6 pts in GeminiBarometer October 2026 · sample data▲ Judge.me +9 pts in ChatGPT▼ Yotpo −6 pts in ChatGPT▲ Brevo +27 pts in Gemini▲ Klaviyo +4 pts in Perplexity▲ Gorgias +3 pts in AI Overviews▼ Omnisend −2 pts in ChatGPT▲ Loox +5 pts in Perplexity▲ Splio +6 pts in GeminiBarometer October 2026 · sample data
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September AI barometer: Brevo doubles its share of voice in Gemini

Sample content: figures and prices to be verified before publication
The short answerIn September, Brevo went from 24% to 51% share of voice in Gemini on email marketing prompts. Klaviyo stays on top in ChatGPT and Perplexity.

This month's numbers

Tool ChatGPT Perplexity Gemini AI Overviews
Klaviyo 58% 51% 50% 56%
Brevo 46% 40% 51% 48%
Splio 11% 9% 9% 12%

Methodology

18 French-language prompts, asked every week to the 4 engines. Share of voice = share of answers that cite the tool.