What is Voice AI? A plain-English guide to AI voice agents: how they work, the business problems they solve, Voice AI vs IVR, the types of Voice AI platforms and the main competitors in 2026.

Meet our AI voice agent for Indian businesses. It makes and answers phone calls in Hindi, Hinglish and English, qualifies leads automatically and pushes them into your CRM. Features, and how it compares with other Voice AI platforms.

Real Voice AI use cases (real estate, lead qualification, reminders, surveys, inbound support), how per-minute Voice AI pricing works in India, and the technical architecture of an AI calling agent: OpenAI Realtime, Twilio, G.711 audio and more.

Since Aug 2025, Sumit has been a Technical Architect at The Hashgraph Group (remote), with experience leading teams. He architects and leads engineering for an AI voice calling platform (IVR AI Bot) built on the OpenAI Realtime API, including multi-provider text-to-speech integration (ElevenLabs, Cartesia), voice cloning, Hindi/English call transcription, and OpenAI function calling to pull internal data (like account or billing info) mid-call. He also leads an Enterprise Identity & Credentialing Platform using verifiable credentials and agentic identity (SSI agents that can auto-issue credentials and even make independent payment decisions), and led development of a Learning Management System (LMS) for internal training and public course certifications.

From Mar 2024 to Aug 2025, Sumit was Senior Software Engineer (Technical Leadership) at the Cybersecurity Research Center, IIT Kanpur (c3ihub.org). He built the technical architecture for a Digital ID platform serving 40,000+ monthly active users for campus entry/exit, an academic credentials platform that issued 25,000+ credentials across 5+ institutes, and a Digital Land Registry Portal for the Kanpur Development Authority (KDA), working directly with government stakeholders including the State Government of UP and the District Magistrate. He also shipped the two native Android apps for this credentialing system: "IITK App" (Play Store), which lets students and alumni download their blockchain-verified degrees, and "IITK Access" (Play Store), which lets employers and institutions verify those credentials on the spot.

Before his technical architecture and leadership roles, Sumit spent about 6 years as a hands-on software engineer: National Blockchain Project at IIT Kanpur (2019-2021) working on Hyperledger Fabric and Quorum blockchain networks; McKinley Rice Private Ltd (2018-2019) leading teams that built an e-learning platform (1,500+ users, $20K+ revenue) and a blockchain-based asset traceability platform; Appinventive Technologies (2018) building Ethereum smart contracts and DApps; and Tekfactory Consulting (2017) as a Front End Developer working with React and Next.js.

Architected an enterprise identity platform that lets organizations issue, store, and manage digital credentials without exposing private keys, using bounded-context NestJS microservices behind an NGINX gateway. Signing keys are secured with HashiCorp Vault Transit and envelope encryption; access is enforced via OIDC/PKCE SSO and a custom policy engine gating issuance and acceptance.

Architected and led backend development of a Veramo-based academic credentialing platform that has issued 25,000+ verifiable credentials across IIT Kanpur, IIT Jodhpur, C3iHub, and government science bodies. Built a credential status registry combining Node.js with Polygon PoS smart contracts for real-time on-chain validation and revocation checks.

Built a blockchain-backed land registration portal for the Kanpur Development Authority, integrating Django with a Quorum permissioned blockchain network, developed in coordination with the UP Rural and Urban Development Ministry. Led the development team and presented progress directly to the Kanpur District Magistrate.

Integrated institute LDAP via OpenID Connect for real-time credential issuance underpinning IIT Kanpur's campus identity system, feeding 5,000+ daily credential transactions. Deployed the containerized identity backend on GCP with Cloud SQL (PostgreSQL) and Redis caching for high-throughput workloads.

Native Android app for downloading and holding blockchain-verified academic credentials issued by the Digital Credentials Platform.

Native Android verifier app for employers and institutions to scan and instantly verify issued credentials.

Developed Hyperledger Fabric chaincode in Node.js for on-chain healthcare transaction handling, with private data collections for sensitive patient records backed by HSMs via HashiCorp Vault. Architected Attribute-Based Access Control (ABAC) with custom middleware and dynamic on-/off-chain policy evaluation.

Led a full-stack team building a blockchain-based diamond traceability platform on a multi-organization AWS blockchain network. Developed Node.js chaincode for on-chain provenance tracking and a React admin dashboard giving a real-time blockchain-explorer view of asset history.

Developed Node.js REST APIs using Express.js and Ethers.js to interface application logic with deployed smart contracts. Integrated MongoDB with on-chain event logs via Mongoose to improve indexing and query performance for event-driven data.

Based on Qwen2.5-7B-Instruct, trained with LoRA.

Published research on digital land rights registry systems.