# Sender vs Klaviyo: which do AI models recommend for email marketing, October 2026

GTM AI Recommendation Index, October 2026 Edition, Email marketing platforms. Zero of fourteen models named Sender first on the direct prompt; zero named Klaviyo. Page: https://gtm-ai-index.com/marketing/email-marketing/sender-vs-klaviyo/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| Sender | 4% | #5 of 14 | 0% | 10 | 10 of 14 |
| Klaviyo | 2% | #6 of 14 | 15% | 26 | 12 of 14 |

## The direct prompt, model by model

- DeepSeek V4 Flash: neither first, one named (first choices: HubSpot Marketing Hub) (alternatives: ActiveCampaign, Klaviyo, Salesforce Marketing Cloud)
- GLM 4.7 FlashX: neither first, one named (first choices: HubSpot Marketing Hub) (alternatives: ActiveCampaign, Brevo, Klaviyo)
- Claude Haiku 4.5: neither named (first choices: HubSpot Marketing Hub) (alternatives: ActiveCampaign, Brevo, GetResponse)
- GPT-5.4 mini: neither named (first choices: HubSpot Marketing Hub) (alternatives: Adobe Marketo Engage, Salesforce Marketing Cloud Account Engagement)
- Gemini 3.5 Flash: neither named (first choices: HubSpot Marketing Hub) (alternatives: ActiveCampaign, Customer.io, Salesforce Marketing Cloud Account Engagement)
- Perplexity Sonar: neither named (first choices: HubSpot Marketing Hub) (alternatives: ActiveCampaign, Outreach, Salesloft, ZoomInfo Marketing)
- Grok 4.1 Fast: neither named (first choices: HubSpot Marketing Hub) (alternatives: ActiveCampaign, Adobe Marketo Engage)
- Mistral Small: neither named (first choices: ActiveCampaign, HubSpot Marketing Hub)
- Llama 4 Maverick: neither named (first choices: ActiveCampaign) (alternatives: Dotdigital, Salesforce Email Marketing)
- Qwen 3.7 Flash: neither named (first choices: HubSpot Marketing Hub) (alternatives: ActiveCampaign, Adobe Marketo Engage, Salesforce Marketing Cloud Account Engagement, SharpSpring)
- Kimi K2: neither named (first choices: ActiveCampaign, HubSpot Marketing Hub)
- MiniMax M2.5: neither named (first choices: ActiveCampaign) (alternatives: HubSpot Marketing Hub, Salesforce Marketing Cloud Account Engagement)
- GPT-6 Luna: neither named (first choices: HubSpot Marketing Hub) (alternatives: Adobe Marketo Engage, Salesforce Marketing Cloud Account Engagement)
- Muse Glimmer 30B: neither named (first choices: ActiveCampaign, HubSpot Marketing Hub) (alternatives: Adobe Marketo Engage)

## What the models said about Klaviyo

- "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)

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. Comparisons are drawn for the top eight products in each category. Published under CC BY 4.0; the output is the models' output, and nothing here is a recommendation by the index.