SignalWire
APIs and a programmable control plane to build voice, messaging, video, and AI agent communications at scale.
| What is it | APIs and a programmable control plane to build voice, messaging, video, and AI agent communications at scale. |
|---|---|
| Pricing | Freemium — from $1200/mo |
| Free tier | Yes |
| Platform | API |
| API | Yes |
| Works with | Make, n8n |
| Best for | building AI voice agents for customer support, creating programmable contact center solutions |
| Domain registered | 2016 |
Data updated Aug. 1, 2026
What does SignalWire do?
SignalWire is a platform that provides developers with the building blocks for modern communications. It offers a suite of APIs, SDKs, and a core programmable control plane designed to orchestrate the full lifecycle of real-time interactions. You can use it to build applications that handle voice calls, messaging, video sessions, and AI-driven conversations, all managed from a unified infrastructure layer. The platform handles the underlying complexity of state management, media routing, and scaling, so developers can focus on creating the user experience.
What sets SignalWire apart is its focus on being a "communications control plane" rather than just a collection of APIs. It models communication resources—like phone numbers, AI agents, and video rooms—as programmable objects that can be connected and instructed. This architecture, built on the company's own global telecom network, aims for ultra-low latency and high reliability without third-party dependencies. It integrates AI capabilities directly, allowing for the creation of voice agents that can listen, respond, and act in real time.
The tool is built for developers and engineering teams who need granular control over communication workflows at scale. It's a strong fit for companies building or modernizing contact centers, creating AI-powered customer interaction systems, or developing applications that require reliable, programmable voice, video, and messaging channels. Enterprises with strict compliance needs around data residency (like GDPR or HIPAA) will also find its regionalized infrastructure and certifications relevant.
Key features
What makes it stand outWho is SignalWire for?
Who benefits most from this toolPricing
Free tier available — start without a credit cardBasic
- Email & Community Support
Premium
- 5 percentage of usage
- 1,200 minimum monthly charge
- Priority 1 Response Time: 2 hours
- Priority 2 Response Time: 4 hours
- Priority 3 Response Time: 8 hours
- Access to the Customer Support Team
Enterprise
- 8 percentage of usage
- 5,000 minimum monthly charge
- Priority 1 Response Time: 15 minutes
- Priority 2 Response Time: 30 minutes
- Priority 3 Response Time: 4 hours
- Named Technical Manager
- Dedicated Escalation Hotline
- Dedicated Slack Channel
- Quarterly Account Review
Trust & presence
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