Comparison
Hi Agent vs Vapi
Vapi is built for developer teams who care about sub-second latency and want to swap llms (gpt, claude, llama) and asr/tts vendors freely. Hi Agent is built for US home-improvement contractors — HVAC, plumbing, roofing, electrical, landscaping and remodeling. If you run a trades business, that distinction is the entire comparison.
Pick Hi Agent if
- You run a home-services business (HVAC, plumbing, roofing, electrical, landscaping, remodeling)
- You don't want to engineer your own dispatcher
- You need ServiceTitan / Housecall Pro / Jobber integration on day one
- You want predictable monthly pricing, not per-minute
Pick Vapi if
- You have engineers who want to build the voice stack themselves
- You need fine-grained control over LLM, voice, latency
- You're not in home services
- You want per-minute pricing for low-volume use
Side by side
| Feature | Hi Agent | Vapi |
|---|---|---|
| Built for | Home-services contractors | Developers / platform |
| Pricing model | Flat monthly, no per-minute surprises | Per-minute, vendor pass-through |
| Starts at | From ~$799 / month (most contractors) | From $0.05 / minute + LLM/STT/TTS costs |
| Pickup speed | <1s | <800ms |
| After-hours dispatch (built-in) | Yes | No |
| CRM integrations | ServiceTitan, Housecall Pro, Jobber, Service Fusion | Custom via webhook |
| Custom voice | Yes | Yes |
| SIP forward (keep your number) | Yes | Yes |
| Contract required | Yes | Yes |
Where Vapi falls short for contractors
Vapi is infrastructure — not a finished receptionist. There's no built-in HVAC emergency triage, no Roofing storm-surge logic, no integration template for ServiceTitan. You bring the prompts, the dispatch rules, and the CRM connectors.
Where Hi Agent wins
Vapi sells the latency. Hi Agent sells the receptionist — already trained, already integrated, already dispatching. The latency comparison is irrelevant once you account for the 6 weeks of engineering Vapi requires.