Fully functional inbound and outbound AI voice agents built on VAPI and integrated with OpenAI or Claude. Handle inbound enquiries, qualify leads, answer FAQs, book appointments and escalate to human agents when needed — deployed with your business knowledge base, call scripts and calendar integrations.
AI voice agents represent the fastest-growing category of modern business automation. Powered by ultra-low latency voice platforms like VAPI and advanced reasoning from OpenAI GPT-4o and Anthropic Claude, today's AI telephony agents are virtually indistinguishable from a human assistant for most routine business interactions — delivering natural conversational pacing, instant objection handling, and uninterrupted 24/7 availability.
Whether you need an intelligent AI receptionist for 24/7 inbound call handling, automated outbound lead qualification, appointment booking synced directly to team calendars, or instant post-call CRM logging and transcription, we engineer complete voice infrastructure tailored to your business knowledge base. Every voice system is delivered production-ready with 100% full source code and workflow ownership — zero recurring agency markups, zero proprietary software lock-in, and full control over your customer interactions.
From 24/7 inbound AI receptionists and automated appointment bookers to multi-channel outbound follow-up engines and real-time CRM synchronizers.
Real production deployments. 100% call coverage. Zero missed opportunities.
A UK service business was missing inbound enquiry calls outside office hours and losing leads to competitors who answered immediately. No budget for additional staff.
24/7 AI voice agent handling all inbound calls — qualifying enquiries, answering FAQs and booking appointments directly into the team's calendar via n8n automation. Full call transcripts logged to CRM after every interaction.
100% call coverage from day one. 40% reduction in missed leads within the first month. Client extended scope to include outbound follow-up calling.
Answers to the most common questions about our custom AI voice agent development, VAPI implementation, and telephony automation services.
Production architectures, platform comparisons and step-by-step implementation guides from our quantitative engineering team.
Step-by-step technical guide to building autonomous AI agents with OpenAI and n8n workflow platforms for modern enterprise operations and customer support.
Complete integration guide for ElevenLabs voice synthesis and speech automation platforms, covering API key security, latency reduction, and webhooks.
Technical deep-dive into copier architecture, latency bottlenecks, order replication, and risk management in multi-account deployments.
Whether you need a single inbound line or a full inbound-outbound voice operation — tell us what's consuming your team's time. We'll scope it, design it and deliver it to production standard. Most projects start within 5 business days.
Or email info@psi-square.net · Phone +44 (0) 20 3872 7195 · We reply within 24 hours · NDA available on request