Vapi

Picture your inbound support line at 9am on a Monday: hold music, a queue of frustrated callers, and agents answering the same five questions on repeat. That's the workflow Vapi is built to take over. Ring's VP of Software Development, Jason Mitura, says the team went "from zero to production in two weeks," and that 100% of their inbound volume now runs through Vapi, with CSAT scores improving rather than dropping. That's a strong claim for a voice agent, and it's the clearest picture of what this platform is for: phone calls that need to get answered, routed or resolved without a human picking up every time.

Vapi pitches itself as "voice agents for builders," and the positioning holds up. You configure the voice, conversation flow, telephony and integrations, and Vapi runs the infrastructure underneath. The pricing page shows you can mix providers such as Deepgram for transcription, OpenAI for the model and ElevenLabs for voice, so you're not locked into one vendor's stack. Support, lead qualification and appointment scheduling are the three use cases it puts front and center, and you can call 1-844-HEY-VAPI to hear a live agent before you write a line of code. The scale numbers are big: 1 billion calls supported, 2.5M+ agents launched, sub-500ms average latency and 99.9% uptime for enterprise clients.

The catch is cost math. You pay per minute for each layer (transcriber, model, voice) on top of Vapi's own fees, and the paid packages jump from $29/month on Core to a $999/month minimum on Pro. The free start with $5 in credits is a fair way to prototype, but if you're running real call volume you'll want to model your per-minute spend carefully. For developers who want control over every piece of a phone agent, Vapi is one of the most serious options out there. If you want a no-thinking, flat-rate receptionist, look elsewhere.