AI Agents & Chatbots Voice & Phone AI
Developer-first API platform for building voice AI agents, orchestrating your choice of speech, LLM, and telephony providers.
Developers and agencies that want to build custom voice agents by wiring their own choice of speech, LLM, voice and telephony providers through one API, at a published $0.05 per minute plus provider costs, with free credits, US or EU hosting and SOC 2, HIPAA and PCI DSS coverage.
You want a finished support product or anything beyond voice: Vapi is infrastructure, voice-only, and its integrations are speech, model and telephony providers rather than help desks.
Vapi is a developer platform for voice AI agents. Rather than selling a finished support bot, it sells the orchestration layer: an API and SDKs that wire together speech-to-text (Deepgram and others), any major LLM (OpenAI, Anthropic), text-to-speech (ElevenLabs, PlayHT, Cartesia), and telephony (Twilio, Vonage, Telnyx) into a low latency phone agent. Support teams meet Vapi indirectly, as the engine behind custom-built inbound support lines, appointment desks, and agencies' white label voice products.
Founders Jordan Dearsley and Nikhil Gupta went through Y Combinator in 2021 with a productivity app called Superpowered, then pivoted to voice infrastructure in 2023 after Dearsley built himself an AI phone bot to think out loud with. It worked: Vapi reports over a million developers and a billion calls handled. It raised a $20 million Series A led by Bessemer in December 2024, then a $50 million Series B in May 2026 at a $500 million valuation, roughly $72 million total. Amazon chose Vapi for its Ring division after evaluating over 40 rivals.
Pricing starts at $0.05 per minute for the platform itself, with SMS at $0.005 per message. Provider costs (speech, LLM, voice, telephony) are passed through at cost, or drop to zero if you bring your own API keys. Realistic all in costs run $0.07 to $0.25 per minute. Ten concurrent calls are included, extra lines cost $10 monthly, and compliance add-ons are priced like enterprise software: HIPAA at $2,000 monthly, zero data retention at $1,000 monthly.
Choose Vapi if you have engineers and want maximum control over every layer of a support voice agent, with the freedom to swap providers as models improve. Skip it if nobody on your team writes code, or you want a vendor accountable for resolution rates rather than infrastructure.
Outcomes named customers have reported, as published by the vendor or the customer.
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Jordan Dearsley • May 12, 2026 ... Today we're announcing our $50M Series B, led by Peak XVchecked September 2026
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