Stream Chat vs. Wati

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.

Wati is an agentic customer engagement platform that transforms conversations into revenue across marketing, sales, and support. By uniting AI agents and human teams across WhatsApp, Instagram, RCS, voice, and web chat, Wati unlocks growth via meaningful interactions while the Wati AI Copilot supercharges your team's productivity. Trusted by over 16,000 customers across 190+ countries, Wati simplifies complex operations and business conversations with a unified inbox, no-code automation, and our intelligent AI layer, Astra.