guía del comprador
AI Phone Agents
A practical buyer guide to AI phone agents (voice agents): how to test transfers and latency, model per-minute costs, connect CRMs, and avoid compliance mistakes.
Quick answer
Buy for handoff and control surfaces first. The best AI phone agents transfer cleanly, log everything you need to audit, and write structured summaries to your CRM—without collecting sensitive data or wandering off script.
- Transfer success
- % of escalations that reach a human without drop.
- Time to first word
- How fast the agent responds after the caller speaks.
- Task success
- % booked, routed, or resolved correctly.
- Summary quality
- Structured notes that ops/sales can trust.
Category fit
Pick the right type (inbound vs outbound)
Most failures come from buying the wrong category: managed receptionist, platform, outbound dialer, or contact-center integration.
| If you need… | Buy… | cuidado con |
|---|---|---|
| Inbound answering + booking | Managed AI receptionist / phone agent | Knowledge freshness and transfer reliability. |
| Deep integrations + custom workflows | Voice agent platform + your systems | QA, monitoring, and failure handling ownership. |
| Outbound qualification | Outbound-capable platform + strict governance | Consent, DNC, and brand risk. |
| PBX/contact-center integration | SIP/BYOC support + clean escalation | Queue and transfer edge cases. |
Evaluación
The 12 demo tests
Don’t accept “low latency” or “great handoff” claims. Make the vendor prove it live.
- Interrupt + barge-in: talk over the agent mid-sentence; check recovery.
- Human request: ask for a human three ways; verify correct routing.
- Warm transfer: confirm a one-sentence human briefing exists.
- Hold behavior: test 20 seconds of ringing; confirm caller experience.
- Hard refusal: “remove me”; ensure instant compliance and logging.
- Structured summary: confirm fields you can filter/report on.
Rule: if they can’t show transcripts and logs from your demo call, you’re buying a black box.
Precios
Why per-minute is never just per-minute
Voice agent cost is usually a stack: telephony + platform + STT/TTS + LLM + workflow writes. Model cost per successful outcome, not per minute.
| Cost component | What drives it |
|---|---|
| Telephony | Call duration, transfers, call legs. |
| Plataforma | Per-minute packaging and included features. |
| STT/TTS + LLM | Audio quality, tokens, tool calls, summary length. |
Cumplimiento
Compliance checklist (US-first)
This is not legal advice. It is the minimum set of topics buyers should review before automation touches your phone line.
- TCPA + consent: prove consent capture and opt-out enforcement for outbound.
- DNC behavior: suppression lists and audit logs that survive vendor changes.
- Recording consent: clear notice + storage access control.
- Caller ID posture: spoofing mitigation and STIR/SHAKEN awareness.
- Datos sensibles: don’t collect card numbers or medical details by default.
Rollout
Roll out in phases
Start with low-risk traffic (after-hours), then overflow, then the primary line only after proof.
Phase 1: Shadow + QA
Test numbers, transcripts, failure taxonomy, and a kill switch owner.
Phase 2: After-hours
Track transfer success, task success, hangups, and summary quality.
Phase 3: Overflow
Transfer early when confidence is low; refine routing and knowledge.
Preguntas frecuentes
Are AI phone agents the same as IVR?
No. IVR is menu routing. A phone agent should handle natural language, ask clarifying questions, complete tasks, and escalate gracefully.
What’s the #1 failure mode?
Transfers. If callers can’t reach a human quickly when they need one, trust collapses fast.
Where does YourGPT fit?
YourGPT can act as a control layer: approved knowledge, structured summaries, and approval gates before any downstream write/send action.