# Build a voice receptionist

> What should I use to build an AI phone agent or voice receptionist?

Answering calls, booking appointments, routing callers — voice agents are bought three ways: no-code builders, developer platforms with full API control, and latency-tuned production stacks.

A hand-picked shortlist from the Agent Search Engine index. Every pick is a real listing; the adoption, pricing, and activity figures are the index's live numbers. Browse on the web: https://agentsearchengine.app/use/build-voice-receptionist

## Recommended picks

### No-code: Synthflow
- Paid product · Platform
- **Setup:** Managed — sign up
- **Why:** Launch an AI phone agent without writing code — the fastest route for a small business that needs the phone answered this week.
- [listing](https://agentsearchengine.app/agents/synthflow) · [official](https://synthflow.ai)

### Developer control: Vapi
- Paid product · Platform
- **Setup:** Managed — API
- **Why:** Full API control over the voice pipeline — the platform developers in this category reach for when the receptionist is part of a bigger product.
- [listing](https://agentsearchengine.app/agents/vapi) · [official](https://vapi.ai)

### Production calls: Retell AI
- Paid product · Platform
- **Setup:** Managed — API
- **Why:** Built around low-latency, production call handling — worth evaluating head-to-head with Vapi when call quality under load is the deciding factor.
- [listing](https://agentsearchengine.app/agents/retell-ai) · [official](https://retellai.com)

## What to watch for
Voice is unforgiving: a two-second lag or a mis-heard name is the whole customer experience. Trial with real calls in your actual use case before committing, and check telephony pricing carefully — per-minute costs compound fast at volume.

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Source: [Agent Search Engine](https://agentsearchengine.app) — more task-first guides: https://agentsearchengine.app/use