Customer.io vs Brevo
Eight of fourteen models named Customer.io first on the direct prompt; zero named Brevo. Customer.io was named by ten of the fourteen models and Brevo by eleven and Customer.io carries 13 labels and Brevo 18, so the shares are not directly comparable.
Named in ten categories this edition.
Paris, France, founded 2012. Named in thirteen categories this edition.
Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all fourteen models, for a mid-market B2B company; rank is within the category; every quote names the model and the prompt it came from. Both figures come from the SMS and WhatsApp marketing platforms page.
By framing
Customer.ioFirst choices, of fourteen modelsBrevo
Every model, every framing
| Model | Direct | Paraphrase | Comparative | Budget-constrained | Scale-constrained | Negative |
|---|---|---|---|---|---|---|
| Claude Haiku 4.5 | | | ||||
| GPT-5.4 mini | | | ||||
| Gemini 3.5 Flash | | | ||||
| Perplexity Sonar | | |||||
| Grok 4.1 Fast | | | ||||
| Mistral Small | | |||||
| DeepSeek V4 Flash | | | ||||
| Llama 4 Maverick | | | ||||
| Qwen 3.7 Flash | | | | |||
| Kimi K2 | ||||||
| GLM 4.7 FlashX | | | ||||
| MiniMax M2.5 | | | ||||
| GPT-6 Luna | | |||||
| Muse Glimmer 30B | | |
Customer.io Brevo first choice named as an alternative argued againstblank: not namedEach cell is one answer, Customer.io on the left and Brevo on the right.The direct prompt
Customer.io first, Brevo not the choice
8 of 14 modelsBrevo was named in the answer but not as the choice, or not at all.Neither was the first choice, one was named
2 of 14 modelsThe answer put something else first and named one of the two as an alternative.Neither was named
4 of 14 modelsThe answer made no first choice from these two in this category.Bold names in an answer are the products the judge labeled a first choice; a model naming several gives each of them that label. The full answer text for every row is in the record.
By buyer segment
Customer.io17%#1 of 17Brevo10%#3 of 17Customer.io0%#– of 9Brevo0%#– of 9What the models said about Customer.io
No label in this category carried a quote.
What the models said about Brevo
No label in this category carried a quote.
Comparisons are drawn for the top eight products in each category, each against each. The output is the models' output; nothing here is a recommendation by the index.