Voice API
Build voice-first apps, not VoIP infrastructure.
Programmable voice that runs at the speed of conversation with low-latency processing, built-in transcription, and AI voice interaction.
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Voice API
Programmable voice that runs at the speed of conversation with low-latency processing, built-in transcription, and AI voice interaction.
SignalWire’s Voice API transforms the way businesses interact with their customers by providing advanced features like dynamic call routing, real-time analytics, and AI-driven voice interactions. Integrate these capabilities seamlessly into your applications to boost engagement, automate responses, and personalize communication across multiple platforms.
Why SignalWire?
SignalWire’s full-stack Voice Agent SDK replaces legacy IVRs and CPaaS glue with a single, real-time AI runtime. With accurate language recognition, live voice control, and deep API integration, developers can design, test, and deploy advanced voice agents—without managing telephony or stitching together services.
Extend voice capabilities with features like multi-language support, advanced IVR, click-to-call, and seamless integration, transforming how you connect with customers around the world.
Learn how to get started in minutes with SignalWire’s real-time Voice API.
Product Features
Live transcription and translation increase clarity and accessibility.
Deliver natural and engaging voice experiences across multiple languages and dialects.
Optimize call flows with intelligent routing, reducing wait times and improving service efficiency.
Meets rigorous compliance and security standards, including GDPR, HIPAA, and SOC 2.
Enhance call control, compatibility, and flexibility across your communication infrastructure.
Embed WebRTC-powered call buttons for instant voice, video, or AI connections. No coding—just copy, paste, and connect directly from your site.
With SignalWire's Voice API, developers can build AI-powered IVRs, auto-dialers, click-to-call widgets, call recording and transcription pipelines, real-time translation systems, contact center applications, and voice bots. The API supports dynamic routing, multi-language text-to-speech, answering machine detection, and live call control via webhooks or SignalWire Markup Language (SWML).
SignalWire's Voice API uses pay-as-you-go per-minute pricing with no platform fees or upfront commitments. You pay only for the minutes you use, and volume discounts are available. This model makes it cost-effective at any scale from early-stage startups to high-volume contact centers.
Yes. SignalWire supports outbound and inbound calling to over 230 international area codes. Developers can enable international dialing through the SignalWire dashboard and use local numbers in multiple countries to improve answer rates and reduce per-minute costs.
Yes. SignalWire supports SIP connectivity and BYOC, allowing you to integrate existing carriers, route calls through your own infrastructure, or use SignalWire as your carrier.
Yes. You can modify call behavior in real time with SignalWire, including transferring calls, triggering recordings, sending messages, or executing workflows while the call is active.
Yes. You can port existing phone numbers or use your current carrier through SignalWire's SIP integration.
Yes. SignalWire supports number porting, SIP integration, and flexible routing, allowing you to migrate gradually without disrupting service.
Get in touch with our team of experts to learn more about our industry-leading solutions.
