Most deployments are live in 4-8 weeks. Simple use-cases (e.g. payment reminders) can launch in 2 weeks; complex multi-intent agents take 8-12 weeks including QA and supervised launch.
Voice AI
Service Overview
Conversational, multilingual, sentiment-aware voice agents that transform customer interactions. Our voice AI solutions handle complex conversations with human-like understanding - from 24/7 multilingual customer service to lead nurturing, payment reminders, and interview coaching. Built with production-grade voice infrastructure (Vapi, Twilio, Retell), our agents handle real-time speech with low latency, sentiment detection, and seamless handoff to human agents when needed. Each deployment is integrated with your CRM, ticketing system, and business workflows.
Our Trusted Clients
Capabilities
Our voice AI capabilities are built on top of leading speech and LLM platforms, customized for your industry, language, and tone of voice.
"They built a fully functional AI voice agent - voice logic, integrations, testing, production rollout - with impressive technical skill and attention to detail." - Thai Nguyen, Desert Recovery Centres
24/7 Multilingual Customer Service
NLU in 50+ languages, real-time sentiment detection, integration with existing CRM and ticketing.
Voice Lead Nurturing
Automated lead scoring, personalized follow-up sequences, calendar booking and analytics.
Payment Reminder Calls
Tone-appropriate reminders, payment plan negotiation, compliance with collection regulations.
Voice Interview Coaching
Industry-specific questions, real-time feedback on pace and clarity, personalized recommendations.
Client Stories
What clients say about us.
“Quantal AI and Team are EXPERTS at building ANY AI functionality you’re seeking! We’ve hired them for 2 projects already — each completed ON TIME and UNDER BUDGET. Highly Recommended!”
Melissa C
myhomecarebiz.com“Working with Quantal AI team has been an absolute pleasure. Their technical aptitude is outstanding — they’re not only highly competent but also creative, thoughtful, and reliable. They built a complex integration for our wine business connecting PhotoRoom, Google Cloud, AWS, and Shopify, and it works beautifully.”
David F
Osteopathic Healing Hands“It was a pleasure working with Quantal AI team. Communication was smooth, deadlines were respected, and the overall collaboration was professional and efficient. I would definitely consider working together again in the future. Recommended!”
Ivana M
Elunic AG
Get in Touch
Talk to an AI Expert
Frequently Asked Questions
Find answers to some of the most common questions about our Voice AI solutions and implementation process.
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How quickly can a voice agent be deployed?
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Which voice platforms do you work with?We build on top of Vapi, Retell, Twilio Voice, and direct LLM streaming pipelines (OpenAI, Anthropic). We pick the platform based on latency, language, and cost requirements.
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Can it handle accents and code-switching?Yes - we design for the languages and accents your callers actually use, not just the demo languages. We support Indic, MENA, LATAM, and English-variant accents with code-switching.
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How do handoffs to human agents work?When the agent detects frustration, an out-of-scope query, or a high-value request, it can transfer to a live agent with full conversation context as a Slack/Salesforce/Zendesk handoff.