AI Caller Software
Voice Agents That Sound Human
Deploy AI callers in minutes. Sub-second voice latency, native-quality speech, and the ability to book meetings, qualify leads, and answer calls 24/7 — all on autopilot.
30 free minutes. No credit card required.
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+1 (866) 690-7373What is an AI caller?
An AI caller is a voice agent that holds real-time spoken phone conversations with people in place of a human. AI callers handle both inbound and outbound calls, hold multi-turn conversations, take real-world actions (booking meetings, sending emails, updating your CRM), and seamlessly escalate to a human when needed.
Phone Stack AI callers are powered by Google Gemini Live for native voice quality and sub-second response latency, Twilio for telephony, and Anthropic Claude for high-quality reasoning and tool use.
What can an AI caller do?
Outbound prospecting, lead qualification, meeting booking, follow-up sequences.
Inbound tier-1 support: order status, FAQs, account questions, escalation routing.
Appointment booking, rescheduling, reminders, no-show prevention.
NPS, post-call CSAT, market research, voice-of-customer interviews.
Friendly payment reminders, auto-pay setup, hardship escalation.
Appointment reminders, intake screening, medication adherence (HIPAA-eligible on Enterprise).
Voice quality that fools people
Phone Stack uses Google Gemini 3.1 Live for streaming voice-to-voice — no separate STT, LLM, and TTS chain. That means:
- Sub-second response latency (typically <600ms first byte)
- Native barge-in — interrupt the AI mid-sentence and it stops
- Natural prosody, pacing, and emotional inflection
- 30+ languages with native-quality voices
- Handles cross-talk, mumbling, accents, and noisy lines gracefully
Built-in compliance
Every AI caller deployment ships with TCPA-aware consent tracking, an internal Do Not Call list that auto-adds anyone who asks to be removed, calling-window enforcement, and recording disclosure controls. You're responsible for scrubbing lists against federal and state DNC registries before uploading. See the legal framework for AI calling and the compliance customer-agreement guide for full details.
Related solutions
24/7 receptionist replacement.
Voice agents with tool use.
Tier-1 support, 24/7.
AI-driven campaigns.
Calls + emails + meetings.
90-day migration plan.
Cut no-shows by 30–50%.
AI sequences that convert.
Tenant + owner comms.
AI Caller FAQs
Common questions about AI callers and voice agents.
Deploy your first AI caller today
15-minute setup. 30 free minutes. Cancel anytime.