Vapi provides the infrastructure to build, test, and deploy AI voice agents that make and receive phone calls. Developers compose voice agents from any LLM, transcription service, and TTS voice. Built-in telephony handles call routing, DTMF detection, and latency optimization for natural-sounding phone conversations.
How Vapi Voice AI compares with its closest alternatives
4 of the 5 closest alternatives have a free plan, as Vapi Voice AI does. Only Gradium lists a starting price, $13 a month. All 5 offer an API, as Vapi Voice AI does. Vapi Voice AI was founded in 2023; the alternatives were founded between 2021 and 2025, 2 of them earlier. Vapi Voice AI is based in San Francisco, United States; 3 of the 4 alternatives with a known headquarters are in the United States too, and the others in France.
Market position · Voice
How Vapi Voice AI compares in Voice
Vapi Voice AI has high opportunity and sits in the top third of 294 live Voice tools on FalcoScan. Across Voice, the average opportunity score is 66.1 and the average saturation score 41.3. FalcoScan rates Vapi Voice AI's own market position as open. 92 of the 294 operating Voice tools have hot momentum, and FalcoScan has recorded 11 shutdowns in the category.
Vapi Voice AI compared with its closest alternatives
The closest alternatives to Vapi Voice AI that are still running, matched on the AI capabilities, uses and audience they share, are Hume EVI 2, Gradium, Parler TTS, Kokoro TTS, and Avoca.
Is Vapi Voice AI still running?
Yes. As of 18 October 2026, FalcoScan lists Vapi Voice AI as operating at vapi.ai.
Where is Vapi Voice AI based?
Vapi Voice AI is headquartered in San Francisco, United States.
Does Vapi Voice AI have an API?
Yes. Vapi Voice AI offers an API.
Who is Vapi Voice AI for?
Vapi Voice AI is built for developers, ai builders, and call centers.
How do I sign in to Vapi Voice AI?
Sign in on Vapi Voice AI's own website, vapi.ai. FalcoScan reviews Vapi Voice AI but does not run its accounts, so logins, passwords and billing are handled by Vapi Voice AI directly.