Klaviyo records 6,674,207 monthly visits with +6.1% month-over-month growth and Paid pricing. StackAI records 1,137 monthly visits with -23.2% growth and Contact for Pricing, Free pricing.
The AI-powered B2C CRM for email, SMS, and personalized marketing at scale
Build, deploy and govern enterprise AI agents without code
| Dimension / Metric | | |
|---|---|---|
| Official Domain | klaviyo.com | stack-ai.com |
| Pricing Model | Paid | Contact for Pricing, Free |
| Monthly Visits | 6.67M (6,674,207) | 1.14K (1,137) |
| MoM Traffic Delta | +384.25K (+6.1%) | -344 (-23.2%) |
| Primary Market & Share | 🇺🇸 United States (38.7%) | 🇺🇸 United States (83.9%) |
| Direct Visits / mo | 4.43M | 451 |
| User Rating | 4.6 | 4.4 |
| Supported Platforms | Website | Website |
The AI-powered B2C CRM for email, SMS, and personalized marketing at scale
Every contact, event, and channel feeds one profile so segmentation, personalization, and reporting stay consistent.
An agent that plans calendars, drafts campaigns, audits flows, and recommends next actions using your business context.
Build campaigns and automated flows across email, SMS, RCS, WhatsApp, push, and social from one interface.
Forecast lifetime value, churn risk, and expected next purchase date to target the right customers at the right time.
Build, deploy and govern enterprise AI agents without code
Assemble agents and multi-step flows on a visual canvas with modules for agents, storage, vision, text-to-speech and speech-to-text, then add Python or JavaScript logic when you need it.
Connect agents to 500+ enterprise systems so they can read, write and execute tasks inside your CRM, helpdesk, document stores and collaboration tools.
Ground agents in your own material with document upload, web scraping, Google Drive and Notion connectors, and document readers for PDF, Word and PowerPoint.
Deploy in multi-tenant cloud, your own VPC or on-premise, with SSO, role-based access control, audit logs and human review at critical decision points.
SpecialistAutonomous enterprise AI agents and CRM intelligence powered by Salesforce Data 360 and Atlas.
SpecialistAutonomous enterprise AI agents and CRM intelligence powered by Salesforce Data 360 and Atlas.
Broader general-purpose email marketing features, but less specialized ecommerce data segmentation compared to Klaviyo.
Broader general-purpose email marketing features, but less specialized ecommerce data segmentation compared to Klaviyo.
Offers more integrated multi-channel tools like WhatsApp and live chat, but less advanced ecommerce predictive analytics.
Offers more integrated multi-channel tools like WhatsApp and live chat, but less advanced ecommerce predictive analytics.
Automate work across thousands of apps — no code required
Simpler and more affordable for basic newsletter design, but lacks advanced predictive segmentation and revenue analytics.
Simpler and more affordable for basic newsletter design, but lacks advanced predictive segmentation and revenue analytics.
Free / Open-sourceOpen-source workflow automation built for AI agents and technical teams
Free / Open-sourceOpen-source workflow automation built for AI agents and technical teams
Includes built-in landing page builders and webinars, but lacks Klaviyo's deep online store revenue attribution tracking.
Includes built-in landing page builders and webinars, but lacks Klaviyo's deep online store revenue attribution tracking.
No-code builder for custom AI agents and workflows
No-code builder for custom AI agents and workflows
Free / Open-sourceBuild, deploy, and govern production-ready agentic AI workflows
Free / Open-sourceBuild, deploy, and govern production-ready agentic AI workflows
SpecialistEmail marketing with AI send-time optimization to lift opens
SpecialistEmail marketing with AI send-time optimization to lift opens
Provides exceptionally powerful CRM automation workflows, but has a steeper learning curve for simple email campaigns.
Provides exceptionally powerful CRM automation workflows, but has a steeper learning curve for simple email campaigns.
Build, share, and control AI agents that actually do the work
Build, share, and control AI agents that actually do the work
