Stream Chat vs. Vonage Communications APIs

Stream Chat is a messaging API and SDK suite for developers building in-app chat. Teams integrate it to ship production messaging in weeks instead of building and maintaining real-time infrastructure in-house. Client SDKs cover React, Swift, Android, Flutter, React Native, Angular, JavaScript, Unity, and Unreal, each with a UI kit you can customize or replace entirely. The backend runs on Go and RocksDB across 12 global edge locations, holding sub-40ms latency and 5M concurrent connections in a single channel behind a 99.999% uptime SLA.

Vonage Communications APIs enable you to transform your customer experiences with programmable video, voice, messaging, and more. With Vonage APIs, growing startups and agile enterprises can build best-in-class communications solutions at scale. Our global platform, comprehensive suite of communications channels, and expert support help you move quickly to offer your customers the most helpful experience possible. Our APIs connect you to Vonage’s Tier 1 network as well as more than 1,600 telecommunications networks around the world for the best quality and scalability in the market.