Sender vs Klaviyo
Zero of fourteen models named Sender first on the direct prompt; zero named Klaviyo. Sender was named by ten of the fourteen models and Klaviyo by twelve and Sender carries 10 labels and Klaviyo 26, so the shares are not directly comparable.
Vilnius, Lithuania, founded 2012. Named in eight categories this edition.
Boston, United States, 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 email marketing platforms page.
By framing
SenderFirst choices, of fourteen modelsKlaviyo
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 | |
Sender Klaviyo first choice named as an alternative argued againstblank: not namedEach cell is one answer, Sender on the left and Klaviyo on the right.The direct prompt
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
12 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
Klaviyo2%#9 of 13Sender0%#– of 13What the models said about Sender
No label in this category carried a quote.
What the models said about Klaviyo
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Two of two in this category shown.
“Avoid tools like ... Klaviyo (ecommerce-focused) for serious B2B lead nurturing.” DeepSeek V4 Flash · paraphrase prompt · hard negative
“Category A: The "Growth" Platform (Most Likely Fit) *Examples:* ActiveCampaign, Klaviyo (if E-commerce), Drip, Keap.” Qwen 3.7 Flash · scale prompt · first choice
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.