Sandeep Kumar
Co-founder, Vaami
Sandeep is a founding member of EmpowerX Labs and a core technical member of the team. A technology leader with an engineering-manager background, he brings deep technical experience, has built multiple startups and products, and leads AI development at Vaami.
Articles by Sandeep Kumar
15 articlesText to Speech (TTS) in 2026: How Neural Voices Work, Top Tools Compared, and TTS for Phone Calls
Text to speech has gone from robotic to nearly human in a decade. Here is how neural TTS works, how to judge a voice, how seven leading TTS tools price and perform, and what changes when the audio goes down a phone line.
Dialer Software in 2026: Predictive, Power and Auto Dialers vs AI Calling Agents
Predictive, power and auto dialers make human reps faster; AI calling agents hold the conversation themselves. This guide compares dialer types, explains abandoned-call rules in the US, UK and India, and shows when to use which.
What Is a Voice Bot? How Voice Bot Technology Works, Types, Examples and Costs (2026)
A voice bot is software that holds a spoken conversation, usually on a phone line. This guide explains how the technology works, the three generations of voice bots, how to evaluate one and what it costs.
Multilingual Chatbots and Voice Agents in 2026: How They Work, What to Test and How to Roll Out by Language
Customers buy, and come back, when you serve them in their own language. This guide explains how multilingual chatbots and voice agents work, where they break, and how to test and roll them out one language at a time.
Hinglish Voice AI: How Code-Switching Works & How to Test It
Indian callers rarely stay in one language for a whole sentence. Here is what code-switching is, why it trips up speech-to-text and text-to-speech, and a 10-point protocol for testing any Hinglish voice agent before you buy.
Voice AI Latency on Indian Phone Networks: Where the Milliseconds Go
Latency is the first thing callers feel and the easiest number to misquote. This explainer breaks a voice AI response into its components, shows how to measure turn-gap at p50 and p95, and explains what a sub-300ms claim does and does not tell you.
What Is DLT Registration? TRAI's Rules Explained for Businesses
Every Indian business sending bulk SMS or running commercial calling campaigns runs into DLT registration sooner or later. Here's what it actually means, who needs it, and how to register without the jargon.
Why Am I Getting Calls From a 140 or 160 Number? What It Means
If a call to your phone shows a number starting with 140 or 160, it's not necessarily spam — it's TRAI's system for labelling commercial calls by type. Here's exactly what each series means.
IVR Meaning in Hindi — IVR का मतलब क्या है?
IVR (Interactive Voice Response) एक automated call-handling सिस्टम है, जो हर बिज़नेस के कस्टमर कॉल्स में इस्तेमाल होता है। यहां जानें IVR का पूरा मतलब, यह कैसे काम करता है, और यह AI voice agent से कैसे अलग है।
Voice AI for Call Center Leaders: The Business Case and Rollout Playbook
Choosing a voice AI vendor is the easy part. The harder job — building the internal business case, keeping your team on side, and rolling it out without a customer-facing disaster — is what most guides skip. This one doesn't.
Voice AI Pricing in India 2026: ₹1.99/min AI Usage, Per-Minute Costs & Full ROI Breakdown
AI calling in India no longer means a fixed monthly plan. Here's what voice AI actually costs in 2026 — per second, per minute, and per call — and how to calculate your ROI before you spend a rupee.
Best Bolna AI Alternatives in 2026: Global Platforms vs India-Specific
Bolna AI is excellent for India-specific deployments. But for global markets, HIPAA compliance, or a complete inbound+outbound+analytics platform, here are the best Bolna alternatives to consider.
Best AI Voice Agents for India: Hindi & Regional Language Comparison
Generic "best AI voice agent" roundups are written for the US market and barely mention Hindi, Hinglish, or TRAI/DLT compliance. Here's an India-first comparison, evaluated on the things that actually matter for an Indian business's calling volume.
AI Voice Agent vs IVR: Why 8 in 10 Businesses Are Replacing Their Phone Menus
IVR (press 1 for...) is one of the most despised technologies in business. AI voice agents replace it entirely — with natural conversation, better resolution rates, and dramatically higher caller satisfaction.
AI Call Center Software in 2026: What It Is, How It Works, and How to Choose
AI call center software has matured from experiment to enterprise standard. If you're evaluating it for the first time or upgrading from a legacy system, this guide covers everything you need to know.