Ring routes all support calls to Vapi; startup valued at $500M

Amazon’s Ring migrated 100% of its inbound customer support calls to voice-AI startup Vapi after evaluating more than 40 voice AI vendors. The deal coincides with Vapi’s $50 million Series B round led by Peak XV Partners that values the company at $500 million.

Ring ran extensive trials before selecting Vapi, including a high-volume stress test during the 2024 holiday season when many customers were setting up new devices. Vapi’s platform handled the surge in inbound calls during that period, and Ring moved forward with full deployment across its support lines after head-to-head comparisons with other providers.

Vapi provides infrastructure for voice-based customer service. The company supplies voice processing, telephony integration and a real-time inference pipeline that connects phone systems to AI models. Vapi does not build the conversational agents themselves; it delivers the systems that make AI phone conversations run at scale.

The startup reports processing between 1 million and 5 million calls per day and says it has handled more than 1 billion calls in total. Those volumes are driven primarily by enterprise customers. Vapi’s enterprise business grew roughly tenfold since early 2025. The company has about 100 employees and plans to use the new capital to expand engineering and go-to-market teams.

Peak XV led the Series B, with participation from Microsoft’s M12, Kleiner Perkins and Bessemer Venture Partners, bringing Vapi’s total funding to $72 million.

Vapi competes with other voice AI suppliers, including Bland AI and Retell AI, and with a wider group of firms selling telephony integrations and low-latency voice pipelines. Investors and customers will watch whether Vapi’s rapid enterprise growth continues through the second half of 2025 and whether Amazon expands the relationship beyond Ring into other business units.

Routing live customer support calls through AI infrastructure highlights operational priorities for businesses deploying conversational technology: uptime, latency and compatibility with existing telephony systems. Companies adopting these systems require reliable integrations that can handle spikes in call volume.