Knock vs Twilio: pricing, quotas & features (2026)
Notifications-as-a-service: in-app feeds, email, push, SMS, chat via one API
vs. Programmable SMS, voice, WhatsApp, email, video — global communication cloud
Data sourced from vendor documentation · Last updated June 2026
Summary
Knock and Twilio are both notifications platforms, addressing the same core use case with different implementation philosophies and trade-offs. Both offer a free tier, making it easy to prototype without a credit card. Knock offers paid plans from $250/month; Twilio does not publish standard pricing. Twilio has a broader documented feature set (16 vs 13 features). The right choice depends on your existing stack, team experience, and feature requirements. All pricing and quota data below is sourced from Knock and Twilio's official documentation — not generated by AI or estimated.
Knock vs Twilio: Comparativa de precios, cuotas y características (2026)
En esta comparativa analizamos Knock y Twilio lado a lado — incluyendo precios mensuales, límites del tier gratuito, características técnicas, cuotas de uso (almacenamiento, transferencia, usuarios activos mensuales) y los interfaces de desarrollo disponibles. Todos los datos proceden de la documentación oficial de cada proveedor, no de respuestas generadas por IA.
Knock es una plataforma de la categoría notifications — Notifications-as-a-service: in-app feeds, email, push, SMS, chat via one API. Ofrece 3 tiers de precio: Developer gratuito, Starter desde $250/mes, Enterprise (personalizado). Su catálogo en Staxly documenta 13 características y 11 interfazes para desarrolladores.
Twilio pertenece a la categoría notifications — Programmable SMS, voice, WhatsApp, email, video — global communication cloud. Ofrece 3 tiers de precio: Pay-as-you-go gratuito, Volume Discounts gratuito, Enterprise (personalizado). Su catálogo documenta 16 características y 14 interfazes para desarrolladores.
A continuación encontrarás los tiers de precio completos de ambas plataformas, una matriz de cuotas del tier gratuito (transferencia, almacenamiento, MAU, llamadas a la API y otros límites), el listado completo de características y los interfaces (CLI, SDKs, REST, GraphQL, MCP) disponibles para integrar cada servicio.
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Pricing tiers
Knock
Twilio
Free-tier quotas head-to-head
Comparing starter on Knock vs payg on Twilio.
| Metric | Knock | Twilio |
|---|---|---|
| guide users | 2500 users | — |
| guide users overage | $0.05/user USD/user | — |
| messages monthly | 50000 messages/mo | — |
| messages overage | $0.005/message USD/message | — |
Features
Knock · 13 features
- AI Agents — Autonomous notification drafting & workflow generation.
- Batch + Digest — Group notifications into digests on schedule or window.
- Chat — Slack, Microsoft Teams, Discord.
- Email — Send via SendGrid/Postmark/Resend/Mailgun/AWS SES as relays.
- Guides — In-product messaging, announcements, modals, banners.
- In-App Feed — Notification inbox with React/Vue/iOS/Android drop-in components.
- Multi-tenancy — Per-tenant branding, preferences, quiet hours.
- Outbound Webhooks — Subscribe to delivery events.
- Preferences — User + tenant preference center with granular controls.
- Push — iOS (APNs), Android (FCM), Expo, Web Push.
- SMS — Twilio, MessageBird, Telnyx, Vonage as providers.
- Workflows — Visual notification orchestration (branch, batch, delay, throttle).
- i18n / Localization — Translate templates by user locale.
Twilio · 16 features
- Conversations API — Unified 2-way messaging across SMS, WhatsApp, MMS, Chat.
- Functions — Serverless Node.js runtime inside Twilio.
- Lookup — Validate phone number, carrier type, SIM swap detection.
- Marketing Campaigns — Via SendGrid; email campaigns product.
- Programmable MMS — Multimedia messaging (US/CA).
- Programmable SMS — Global SMS send/receive with delivery tracking, A2P 10DLC, short codes.
- Programmable Video — WebRTC video rooms + recording + composition.
- Programmable Voice — Outbound/inbound calls, call queuing, IVR, recording, SIP trunking.
- RCS Messaging — Rich Communication Services with verified sender brands, media, buttons.
- Segment (CDP) — Customer Data Platform owned by Twilio.
- SendGrid (Email) — Twilio-owned email product. Separately priced.
- Studio (visual) — No-code flow builder for IVR, messaging workflows.
- Twilio Engage — Multi-channel marketing orchestration on Segment data.
- Twilio Flex — Programmable contact center (cloud CCaaS).
- Verify (2FA) — Multi-channel OTP: SMS, voice, email, WhatsApp, Push, TOTP.
- WhatsApp Business — Official WhatsApp Business API via Twilio as BSP.
Developer interfaces
| Kind | Knock | Twilio |
|---|---|---|
| CLI | Knock CLI | Twilio CLI |
| SDK | @knocklabs/node, @knocklabs/react, knock-elixir, knock-go, knock-java, knockapi (Python), knockapi (Ruby) | twilio (Node), twilio-csharp, twilio-go, twilio-java, twilio-php, twilio-python, twilio-ruby |
| REST | Knock REST API | Twilio REST API |
| MCP | Knock MCP Server | Twilio MCP Server |
| OTHER | Outbound Webhooks | Status Callback Webhooks, Studio Flow (no-code), TwiML (XML markup), Twilio Functions (Node) |
Key takeaways
- Both Knock and Twilio offer a free tier — Knock ("Developer") and Twilio ("Pay-as-you-go") — with no credit card required to start.
- Knock's entry paid tier (Starter) costs $250/month; Twilio does not list public pricing.
- Twilio has a broader documented feature set (16 features) vs. Knock (13 features) in Staxly's catalog.
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