How to Evaluate a Voice AI Platform: An Enterprise Buyer’s Checklist

Voice AI demos are seductive and easy to fake. This checklist helps you separate a platform that will survive a real lobby from a prototype that shines only on stage. Score each item; weight security and grounding highest.

1. Conversation quality

• Natural turn-taking and barge-in (can the user interrupt?)
• Sub-second response latency in realistic conditions
• Graceful handling of "I didn't catch that" without dead ends
• Consistent persona and tone you can configure

2. Languages

• Automatic language detection, not a manual picker
• Mid-conversation language switching
• Coverage of the languages your visitors actually speak (ask for the real list)
• Quality of less-common languages, not just English and Spanish

3. Grounding & accuracy

• Retrieval (RAG) from your sources, with citations
• Content refresh without model retraining
• Sensible refusal when the answer isn't in the knowledge base
• Transcripts you can review to find content gaps

4. Environment

• Far-field capture tuned for noise and echo
• Presence detection for proactive greeting
• Hardware options (kiosk, tablet, custom) and certification

5. Security & compliance

• SOC 2 / ISO 27001 posture; HIPAA readiness if relevant
• Tenant isolation and encryption in transit and at rest
• Configurable data retention and deletion
• On-premise or in-region options for sovereignty
• Full audit trails

6. Integration

• Host notifications (Slack, Teams, email, SMS)
• CRM and ticketing sync for leads and requests
• APIs and webhooks for your systems
• SSO and role-based access for admins

7. Operations & analytics

• Dashboard for interactions, languages, and intents
• Content-gap reporting
• Uptime SLA and support model
• Clear admin workflow for updating answers

8. Commercials

• Transparent per-kiosk / per-site pricing
• No surprise per-interaction metering
• Reasonable onboarding timeline (days/weeks, not quarters)

Red flags

Be wary of: demos that only work with scripted questions, vague answers on data handling, "we support 100+ languages" with no list, no transcript access, and pricing that punishes success with per-message fees.

Score honestly, insist on a pilot with your own content, and weight grounding and security above flash. A platform that nails those will still be serving your lobby in three years.