Signalwire

Build and Extend Your Voice AI Applications

Headquarters: Palo Alto, California
Employees: 51–200
Founded: 2017
Business Model: B2B

Website: signalwire.com
Total Funding: $71.5M
Last Round: $30.0M Series BMar 2022

About

SignalWire is a programmable unified communications control plane that orchestrates voice, messaging, video, and AI interactions in real-time. Founded by the creators of FreeSWITCH, it provides developer-first APIs and SDKs enabling businesses to build ultra-low latency voice AI agents, contact centers, and real-time communication applications. The platform owns its full telecom infrastructure, delivering sub-500ms response times without third-party dependencies.

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Tech Stack

Python

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