QuickBlox vs Sendbird: Chat SDK Alternatives Compared

Sendbird built its reputation the conventional way — chat, voice, and video infrastructure for developers who didn’t want to build real-time communication from scratch. That’s changed: Sendbird’s own homepage now calls itself “the AI customer experience platform for enterprise,” with delight.ai leading and the Communications API positioned second.

QuickBlox took the other path. The chat and video SDK story is comparable — same core platforms, same conventional infrastructure category — but the AI layer sits natively inside that same SDK rather than being spun out as a separate enterprise product.

Sendbird is increasingly an AI customer experience company with a chat API underneath it. QuickBlox is still a communication-first platform with AI built into the workflow and a growing focus on healthcare.

At a Glance

Developer Experience, SDKs, and Customization

Both platforms cover the SDK ground most teams need: iOS, Android, JavaScript, React Native, and Flutter for chat, with voice and video running on each vendor’s own WebRTC-based infrastructure rather than a third-party layer.

Sendbird ships a mature, polished UI Kit — React, React Native, Flutter, SwiftUI, Swift, Kotlin, and Jetpack Compose — with Sketch and Figma design assets and a no-code configuration tool in the dashboard for previewing and adjusting UI without writing code. Core chat features (typing indicators, read/delivery receipts, offline push, file sharing, threading, mentions, reactions, polls, scheduled and pinned messages) are included from the Starter plan up. Auto-translation and Supergroup channels (large private group chats scaling to thousands of participants) are Pro-plan features. 

QuickBlox takes a build-first approach, with SDKs public on GitHub across the platforms it supports. UI Kits cover iOS, Android, and React, with Flutter listed as coming soon. Core messaging features (file, image, and video sharing, voice messages, read receipts, typing indicators, message search, editing, and deletion) are documented across the SDK and pricing pages.

The practical distinction: Sendbird ships more out of the box — a richly themed UI Kit with design assets and a no-code configuration tool. QuickBlox’s UI Kits are comparatively lighter, but its SDKs being public source gives teams direct access to the underlying code if they need to go beyond what either UI Kit exposes. The more meaningful difference isn’t in the SDK layer itself, though: QuickBlox’s AI Agent Platform sits natively alongside the SDK, letting a developer add AI-powered workflows without integrating a separate product, whereas Sendbird’s AI capability now lives in delight.ai — a distinct product built on top of, not embedded in, the communications layer.

Deployment, Hosting, and Infrastructure Control

This is one of the more clear-cut structural differences between the two platforms.

Sendbird operates primarily as a managed cloud service. Shared cloud infrastructure is available across 9 AWS regions, with region selection itself gated to the Enterprise plan. Private dedicated servers — a private instance in any AWS region for data isolation — are available, but only at the Enterprise tier; Starter and Pro remain shared-infrastructure only. No confirmed on-premises deployment option exists on any Sendbird plan: private dedicated instances on AWS are the closest Sendbird gets to infrastructure isolation, and that isolation is still Sendbird-managed cloud infrastructure, not the customer’s own environment.

QuickBlox’s deployment model is tiered in a similar shape to Sendbird’s: shared cloud is the default, with QuickBlox hosting and managing the customer’s data on its own infrastructure. Where it diverges is at the Enterprise tier, where the customer gets to choose where the data actually sits — either the organization’s own cloud account (AWS, GCP, Azure, and others), with QuickBlox deploying and managing the software inside it, or fully on-premises on the organization’s own servers, with QuickBlox’s access limited after installation.

The practical distinction: at the shared-cloud tier, the two platforms are structurally similar — both host and manage the customer’s data on their own infrastructure. The real divergence is what Enterprise unlocks. Sendbird’s Enterprise tier offers a private, still Sendbird-managed instance. QuickBlox’s Enterprise tier goes further, letting the organization choose customer-owned cloud or true on-premises deployment. For organizations where infrastructure ownership itself is the requirement — not available by default on either platform’s entry tier — that’s the level where the two models actually part ways.

AI and Automation Capabilities

This is where the two platforms have diverged most sharply, and it’s the central story of this comparison.

Sendbird: delight.ai, a separate enterprise product

Sendbird’s flagship AI product is now delight.ai, an AI concierge built for autonomous, end-to-end customer service: resolving issues, taking action across systems, and maintaining context as customers move between chat, SMS, email, and voice. Its components include Trust OS (an observability and governance layer for tracing and constraining AI responses), the Agent Memory Platform (connecting customer memory to business goals), Agent Steward (autonomous ownership of long-running customer issues), and a Voice AI Agent for outbound and inbound voice interactions.

The important structural point: delight.ai is built on top of Sendbird’s communications infrastructure, but it is marketed, sold, and — as far as public documentation shows — priced separately from the Communications API. It’s a distinct enterprise product layer, not a feature embedded inside the chat SDK. Sendbird’s own materials describe the communications infrastructure as “the foundation delight.ai is built on,” which confirms the relationship without confirming that delight.ai runs on Sendbird’s Chat APIs or SDKs directly.

Within the Communications API itself, AI-related features remain: AI moderation (via a Hive AI integration), auto/on-demand/push translation (Pro plan and above), and a chat-level “AI Agent” link that appears to route into the broader delight.ai offering rather than existing as a separate, lighter-weight tool.

QuickBlox: an AI Agent Platform embedded in the communication stack

QuickBlox’s AI Agent Platform is designed to operate as part of the same platform that provides chat, video calling, file sharing, SDKs, and UI Kits — not as a separate product sold alongside it. Organizations can deploy the AI Agent standalone, or combined with QuickBlox’s chat and video infrastructure for a unified environment where automated interactions can hand off into live communication.

The healthcare-specific extension of the AI Agent Platform covers patient intake and onboarding, symptom triage workflows, appointment scheduling, and follow-up workflows — built for healthcare out of the box rather than configured from a general-purpose customer-service agent framework. All AI processing sits within QuickBlox’s BAA, covering intake, triage, note generation, and coding where applicable.

The practical difference: if an organization wants an enterprise AI customer-experience platform and is comfortable evaluating and pricing it as a separate product from the underlying chat infrastructure, delight.ai is a genuinely capable, LLM-agnostic option. If the priority is AI functionality that lives inside the same communication layer being built on — and, for healthcare teams, comes with workflow templates already built rather than assembled from a general framework — QuickBlox’s approach removes an integration step Sendbird’s now requires.

Compliance and Regulated Industries

Sendbird confirms HIPAA compliance at the framework level and states it will sign a BAA, per its own HIPAA announcement. Where the picture is less clear is plan eligibility: the public pricing page does not clearly break out which tier includes HIPAA/BAA for Chat, and for Calls, HIPAA is explicitly listed as a paid add-on rather than a standard inclusion. Sendbird holds SOC 2 Type II, ISO 27001, and ISO 42001, plus GDPR and CCPA. On encryption: data is encrypted in transit (TLS) and files at rest (AES-256), but true client-side end-to-end encryption is not explicitly confirmed — developers wanting full E2EE typically need to layer in a third-party tool such as Virgil Security before messages reach Sendbird’s servers.

QuickBlox provides HIPAA-compliant hosting with encryption and a signed BAA, available with the HIPAA Cloud plan or the Enterprise plan, rather than an add-on layered on top of an existing plan. SOC 2 Type 2 and GDPR is confirmed. Audit logging runs through Graylog as part of the HIPAA-compliant hosting environment.

The practical distinction: Sendbird holds two certifications QuickBlox does not claim (ISO 27001 and ISO 42001), but its HIPAA/BAA availability is less transparently tied to a specific, affordable plan tier. QuickBlox’s BAA is available by choosing the HIPAA Cloud plan directly, without needing to negotiate a full Enterprise agreement, and both platforms are SOC 2 Type 2 certified.

Healthcare Considerations

Both platforms support healthcare deployments, but healthcare occupies a different place in each company’s overall positioning.

Sendbird maintains a dedicated healthcare solutions page with documented implementations across telemedicine, virtual care, and patient-provider messaging. But healthcare is one of five listed verticals (alongside on-demand/delivery, retail, financial services, and marketplaces), positioned at parity with the others rather than as a primary focus. Sendbird does not offer a white-label or turnkey telehealth product; healthcare organizations build on the API and SDK layer themselves.

QuickBlox treats healthcare as its flagship domain rather than one vertical among several, with dedicated infrastructure (HIPAA-compliant hosting, healthcare-specific AI Agent) and, for organizations that want a deployable product rather than a build project, Q-Consultation — a white-label telehealth platform with virtual consultations, waiting rooms, scheduling, and AI-assisted clinical documentation.

The practical distinction: a healthcare team evaluating Sendbird is evaluating general-purpose communication infrastructure with a healthcare-relevant compliance layer. A healthcare team evaluating QuickBlox has the additional option of a purpose-built healthcare product rather than assembling one from API primitives.

This is one of the sharpest differentiators in the entire comparison: Sendbird has no equivalent to Q-Consultation at any tier, Enterprise included. A healthcare team evaluating Sendbird can only ever be evaluating infrastructure to build on — there’s no point at which “buy a finished platform instead” becomes an option the way it is with QuickBlox. For organizations that don’t have months of engineering time to build virtual waiting rooms, intake flows, and clinical documentation from API primitives, that’s not a minor feature gap — it’s a different category of buying decision entirely.

Pricing Models and Cost Predictability

Sendbird prices Chat by Monthly Active Users, with Calls (voice and video) priced separately on a per-minute consumption model — and HIPAA listed as a paid add-on on the Calls pricing page specifically, on top of whatever Chat tier is active. delight.ai pricing is not publicly available and requires a sales conversation.

QuickBlox prices by total registered users rather than MAU, with voice and video included in the platform tiers rather than billed separately. The free Basic plan includes an AI Agent at no cost; HIPAA/BAA coverage is reachable at the HIPAA Cloud plan without requiring a full Enterprise negotiation.

The two platforms price on different metrics — MAU versus total registered users — so which is more cost-effective depends on your app’s usage pattern: apps with a large registered base but lower daily engagement may find QuickBlox’s model more predictable, while apps with high MAU-to-registered-user ratios should model both structures against real usage before deciding.

Pricing verified May 2026. Review official pricing pages of both platforms before making purchasing decisions — note that QuickBlox prices by total registered users and Sendbird by Monthly Active Users, so a direct per-user comparison depends on your app’s specific usage pattern.

Which Platform Should You Choose?

Choose Sendbird if your priority is an enterprise AI customer-experience platform and you’re comfortable evaluating that as a distinct product from the underlying chat infrastructure — delight.ai’s omnichannel continuity, governance layer, and voice AI agent are aimed squarely at CX and support teams rather than developers building communication into a product. Sendbird’s UI Kit is also a genuinely fast path to a polished chat interface if implementation speed matters more than infrastructure ownership.

Choose QuickBlox if you want AI functionality built into the communication layer itself rather than sold as a separate product, if deployment flexibility — including on-premises and customer-owned cloud — is a requirement rather than a nice-to-have, if HIPAA/BAA coverage needs to be reachable through a defined plan rather than an open-ended Enterprise conversation, or if you need a deployable white-label healthcare product rather than API infrastructure to build one from scratch.

For teams specifically re-evaluating Sendbird after noticing its shift toward AI customer experience: if what drew you to Sendbird originally was its chat and video infrastructure, that positioning has moved. QuickBlox remains communication-first, with AI built into — not sold alongside — that infrastructure.