NexaCalling
A full-stack AI voice agent SaaS platform that enables businesses to create human-like voice agents for outbound sales, inbound support, lead qualification, and appointment booking — handling 1 million+ calls per minute across 100+ countries.
5×
Productivity Boost
100×
Scalability
100+
Countries Supported
30+
Languages
The Challenge
Businesses across SaaS, e-commerce, healthcare, and education needed a scalable way to automate customer calls without sacrificing the human touch. Existing solutions were robotic, expensive, and lacked multi-language and multi-channel support.
Manual outbound calling teams couldn't scale beyond a few hundred calls per day
Inbound support lines had long wait times leading to 40% customer drop-off
No existing tool combined AI voice with SMS, email, WhatsApp, and calendar scheduling in one platform
Businesses operating in 100+ countries needed multi-language, low-latency voice infrastructure
Our Approach
We took a product-first approach — designing the UX for non-technical users while building enterprise-grade AI voice infrastructure under the hood. Delivered in phased sprints with early beta access to validate each feature with real users.
Product Discovery & UX Design
Conducted user research across 4 industries, mapped 12 core use cases, and designed a no-code agent builder with visual flow builder for conversation scripting.
AI Voice Engine Development
Built a human-like voice engine with customizable speaking rate, accent, and patience level. Integrated sentiment analysis, diarization, and real-time interruption handling.
Global Telephony Infrastructure
Engineered sub-500ms latency calling across 100+ countries with direct carrier connectivity, smart routing, and one-hop delivery for crystal-clear voice quality.
Multi-Channel Automation & Launch
Integrated SMS, email, WhatsApp, calendar invites, Zapier, and webhook automations. Launched with a freemium model offering 14-day trial and $10 free credit.
The Solution
A comprehensive AI voice agent platform with a no-code builder, global telephony, multi-channel automations, and RAG-powered knowledge base — enabling businesses to deploy intelligent calling agents in minutes.
No-code AI agent builder with customizable voice, language, accent, and personality settings
Visual drag-and-drop flow builder for scripted conversation paths with conditional logic
Outbound and inbound calling across 100+ countries with sub-500ms latency
Automated SMS, email, WhatsApp messaging and calendar scheduling during calls
RAG-powered knowledge base for contextual, accurate AI conversations
Real-time sentiment analysis, diarization, and smart call routing
Zapier and webhook integrations for CRM sync and workflow automation
Multi-language support with 30+ languages and automatic detection
Tech Stack Used
Results & Impact
NexaCalling transformed how businesses handle customer communications — enabling sales teams to 5× their productivity while providing 24/7 AI-powered support across global markets.
Call Capacity
Sales Productivity
Customer Wait Time
No-Show Rate
Support Coverage
Languages
"Nexacalling has revolutionized our customer service workflow. Converting manual calls to AI used to take hours. Now it takes just 30 seconds with perfect results."
Facing a Similar Challenge?
Let's talk about how we can help you achieve similar results.
Tell us about your project
Two short steps, then pick a time. Mention this case study and we will come to the call with the relevant detail.
Would rather message? Talk to us on WhatsApp