Klaviyo vs Twilio

Klaviyo — Application · Public · $5.5B mkt cap · 4 of 4 figures sourced  |  Twilio — Application · Public · $36.5B mkt cap · 4 of 4 figures sourced

Relationship

Klaviyo Customer Agent and Twilio Agent Copilot do comparable work on customer support; both also serve buyers who need to handle customer support conversations; larger scale (public).

Assembled from the recorded fields for this pair, not hand-checked. The comparison below is read from each company’s own profile.

3 of 5 capabilitiesShared product typeLarger scale

3 of 5 capabilities — Shares customer support, marketing content and workflow automation.

Ludbee capability tags · from the product records

Shared product type — Both ship application.

Ludbee product records

Larger scale — Twilio: $36.5B market cap, against Klaviyo's $5.5B market cap.

Ludbee scale figures · valuation, market cap or revenue estimate

Aligned comparison

FieldKlaviyoTwilio
Market cap$5.5B$36.5B Twilio has 6.6× more
Employees2,3685,587 Twilio has 2.4× more
Founded20122008 4 yrs earlier
StatusPublicPublic match
CategoryApplicationApplication match
Stack layerAI agent, ApplicationAPI service, Agent platform, Application, Data service, Developer tool, Platform
HeadquartersBoston, USASan Francisco, USA

Capability overlap

Shared · 3

Customer supportMarketing contentWorkflow automation

Not verified for Twilio · 2

Image editingImage generation

Recorded for Klaviyo. Twilio’s product records say nothing either way — a missing record is not a missing capability.

Not verified for Klaviyo · 8

Agent orchestrationData analysisKnowledge retrievalSpeech to textSummarizationText to speechVector searchVoice agent

Recorded for Twilio. Klaviyo’s product records say nothing either way — a missing record is not a missing capability.

Products, side by side

Algorithmic pairing — assembled from recorded fields, not hand-checked

Klaviyo

Application

Klaviyo Image RemixApplication

An in-app AI photo editor inside the Klaviyo email editor that edits or generates campaign images from a text prompt using Google Gemini.

Twilio

Application

Twilio Agent CopilotApplication

Generative-AI assistant inside Twilio Flex that gives contact-center agents customer context, live suggested responses via "Ask Copilot," and AI-generated wrap-up notes with sentiment and disposition codes.

Twilio FlexApplication

Composable AI-assisted contact-center platform that orchestrates escalation from automated self-service to human agents across voice, SMS, WhatsApp and email.

No counterpart

Klaviyo sells these in a stack layer with no product recorded for Twilio yet — nothing on the other side to compare them against.

AI agent

ComposerAI agent

Agent that plans and optimises marketing campaigns against a brand's own customer profiles, sitting alongside Klaviyo's email, SMS and WhatsApp channels rather than running as a separate tool.

Klaviyo Customer AgentAI agent

Service agent that answers inbound customer questions using the same profile and order history Klaviyo already holds for marketing, shipped with the Customer Hub and Helpdesk tools for consumer brands.

Twilio sells these in a stack layer with no product recorded for Klaviyo yet — nothing on the other side to compare them against.

API service

Conversation IntelligenceAPI service

Applies prebuilt and custom language operators to live and recorded voice and messaging conversations to produce transcripts, sentiment, intent, summaries and agent-performance signals.

Conversation MemoryAPI service

Service that extracts observations from customer conversations across channels into identity-resolved profiles and exposes them to AI and human agents through a semantic-search recall API.

Conversation RelayAPI service

Voice AI service that bridges a Twilio phone call to a developer's own LLM over a WebSocket, handling speech-to-text, text-to-speech, interruption handling and language detection.

Enterprise KnowledgeAPI service

Managed knowledge store that ingests an organization's policies, documents and reference material and serves grounded retrievals to AI agents and human responders inside Twilio Conversations.

Agent platform

AI AssistantsAgent platform

Framework for building customer-aware autonomous assistants across voice and messaging channels, with built-in customer memory, tool-calling, a managed RAG knowledge pipeline and safety guardrails.

Developer tool

Twilio Agent ConnectDeveloper tool

MIT-licensed Python SDK that acts as middleware between a developer's own LLM agent runtime and Twilio Voice, messaging channels, Conversation Memory and Conversation Orchestrator.

Platform

Conversation OrchestratorPlatform

Engine that connects a customer's interactions across voice, SMS, RCS, WhatsApp, chat and other channels into one continuous conversation, so AI agents, workflows and human teams work from a shared context.

Data service

PredictionsData service

Predictive machine-learning traits in Twilio Segment that score customer profiles for likelihood to purchase, likelihood to churn, predicted lifetime value and custom goals, and turn those scores into audiences.