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.
Klaviyo records 6,674,207 monthly visits with +6.1% month-over-month growth and Paid pricing. telli records 30,992 monthly visits with -10.6% growth and Contact for Pricing pricing.

AI voice agents that run your customer calls end to end
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | klaviyo.com | telli.com |
| Pricing Model | Paid | Contact for Pricing |
| Monthly Visits | 6.67M (6,674,207) | 30.99K (30,992) |
| MoM Traffic Delta | +384.25K (+6.1%) | -3.67K (-10.6%) |
| Primary Market & Share | 🇺🇸 United States (38.7%) | 🇩🇪 Germany (74.4%) |
| Direct Visits / mo | 4.43M | 9.08K |
| 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.

AI voice agents that run your customer calls end to end
telli Studio lets teams create and refine agents by describing the conversation in natural language, without engineering work.
Deploy agents with native fluency, local accents and cultural context across 30+ languages, with curated voices and optional voice cloning.
Pre-built and custom actions let agents act during a call, while post-call workflows push outcomes into connected systems automatically.
Native Salesforce and HubSpot connections plus API access, with telli phone numbers or bring-your-own via SIP trunking.
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.

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.
The AI platform for customer experience and business communications

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.

SpecialistAI communication platform for sales and support teams

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.

Free / Open-sourceEnterprise voice AI that resolves customer conversations
Free / Open-sourceEnterprise voice AI that resolves customer conversations

Free / Open-sourceCloud phone system and AI voice agents for sales, support, and call centers
Free / Open-sourceCloud phone system and AI voice agents for sales, support, and call centers
AI-powered omnichannel customer experience and contact center platform