AI calling
Phone agents that answer and place calls in natural speech.
“Good afternoon. I can book that appointment for you now.”
Omnichannel AI
AI calling, WhatsApp and web chat
Nexyantra is one workspace for AI calling, a WhatsApp agent, a web chat bot and web voice. Build the agent once, connect each channel, and review every conversation.
Connected to leading AI & voice providers
WhatsApp
Vobiz
Deepgram
Meet customers where they already are.
A WhatsApp agent on the app your customers already open every day.
“Your order is confirmed. I can send the tracking link here.”
Web chat bot
A chat bot on your site that answers, then hands off to a person.
“I can answer that here, and hand you to someone if you'd rather.”
Web voice
Visitors talk to an agent in the browser. No phone number needed.
“You're connected. Tell me what you need.”
Telegram
Support and sales agents inside Telegram chats and groups.
“I can answer that in this chat, or bring a person in.”
Avatar
A face and a voice for onboarding, training and front-desk moments.
“Welcome. I'll walk you through the next step.”
Try It In Your Browser
Meet your Nexyantra assistant
Two ways to get to know Nexyantra. Pick yours.
Web Chat
Ask about Nexyantra. Find the right fit for your business.
Conversation preview
What can Nexyantra do for my business?
Automate calls, chat with visitors, and support customers around the clock.
No signup needed · Type at your own pace
Web Voice
Talk to our AI assistant, right here in your browser.
Voice preview
English & Hindi
No signup needed · You choose when your mic starts
Enterprise Omnichannel Platform
Engineered for High-Volume Voice & Chat Automation
Everything your business needs to deploy production AI agents across telephony, WhatsApp, and the web in minutes.
Streaming Voice
Human-Speed Autonomous Voice Calling
Full-duplex conversation pipeline with real-time interruption handling, speech-to-speech turn-taking, and SIP trunking integration (Smartflo, Plivo, Vobiz, Twilio). No robotic delays.
PIPELINE EXAMPLEILLUSTRATIVE TIMINGS
STT Audio-to-Text
120ms
LLM Reasoning
110ms
TTS Audio Out
100ms
Meta Cloud API
Official WhatsApp Business Suite
Connect official WABA numbers in 1-click. Supports voice notes (Sarvam/Soniox), rich media, interactive buttons, catalog orders, and granular modality toggles.
Verified OBA Branding
60+ Languages
Indic & Global Speech Synthesis
Native Indic voice models via Sarvam AI (Hindi, Bengali, Tamil, Telugu, Marathi, Kannada) and Soniox Multilingual. Natural inflection and regional dialects.
HindiEnglishTamilTeluguBengali
Live Copilot
Seamless Bot-to-Human Handoff
When a customer asks for a human or sentiment turns frustrated, the agent transfers the session to your human agent team in real-time with full conversation context.
Real-Time WebSocket Sync
Multi-Carrier
SIP Telephony Aggregator
Connect Smartflo (Tata), Plivo, Vobiz, or Twilio SIP credentials. Features automated hot failover, DND scrubbing, and instant CLI caller ID routing.
Provider-dependent call delivery
Full Observability Stack
Trace Every Single Token, Utterance, and Rupee
Direct integration with Langfuse trace recording and Grafana Prometheus metrics. Monitor sentiment, duration, call dispositions, and cost in real-time.
Specialized Vertical Platforms Ready to Deploy
From autonomous hiring pipelines to school operations and automobile dealerships — deploy fully configured, multi-agent workspaces tailored for your industry.
AI Autonomous Hiring & Interview Suite
HR Tech & RecruitingEnd-to-end recruitment from WhatsApp candidate intake to AI voice screening & scorecards
Ready-to-import agent
Hiring Screen Agent
Pre-screen applicants, score the conversation, and book the next interview.
“Hello, I'm calling about your application. Do you have a few minutes for a short screening?”
Voice agenten-INhi-IN
Illustrative scenario figures for the example below; these are not verified customer results or performance guarantees.
85%
Reduction in Screening Time
3.8x
More Candidates Screened Daily
< 15 min
Time from Apply to First Interview
How this works for your business
1
1. WhatsApp Candidate Sourcing
Candidates apply via QR or job board; bot parses resume & collects basic KYC details.
2
2. Autonomous AI Voice Interview
Nexyantra Voice Agent calls candidate for 10-minute technical & cultural pre-screening.
3
3. Instant Scorecard & Assessment
Generates rubric scoring, transcript analysis, and confidence score in your ATS.
4
4. Automated Interview Booking
Top scorers automatically receive WhatsApp calendar links for final human rounds.
Live Voice Turn-Taking
Full Duplex🤖 Nexyantra AI Voice Agent
"Hello Priya! I'm calling from Acme Tech's recruitment team for your React Developer application. Do you have 5 minutes for a quick technical pre-screening?"
👤 Customer / Applicant
"Hi! Yes, I am available now."
🤖 Nexyantra AI Voice Agent (Follow-up)
"Great! Could you tell me about a time you optimized state management in a large React application with high traffic?"
WhatsApp Auto-SyncLatency: 310ms
Operations Board
Your Entire Telephony & Chat Ops in One Glance
Live call audio transcripts, sentiment scoring, cost per minute, and carrier disposition codes presented in a clean workspace.
Open & Multi-Model Ecosystem
Powered by the World's Best Telephony & AI Engines
Nexyantra connects the best speech-to-text, reasoning, and speech synthesis models with carrier-grade SIP telephony.
Carrier Telephony & SIP Hub
Zero-downtime hot failover across all SIP providers
Tata Tele SmartfloSIP Trunk
Native Indian enterprise SIP trunking, 100% TRAI compliant
Plivo VoiceCarrier API
Global high-throughput calling with automatic CLI caller ID
Vobiz TelecomDialer SIP
Low-cost high-volume dialer with localized routing
Meta WhatsApp CloudOfficial WABA
Official WABA direct integration with OBA verification
Twilio Programmable VoiceElastic SIP
Worldwide telecom fallback and elastic SIP interconnect
LiveKit & WebRTCWebRTC
Zero-latency in-browser web calling for mobile & desktop
AI Speech & Reasoning Engines
Pick any model or let Nexyantra auto-route for lowest latency
Sarvam AI(Bulbul v3 / Saaras)Indic Leader
Indic Speech Synthesis (TTS) • 12+ Indian Languages (Hindi, Tamil, Bengali, Telugu, Marathi, etc.)
Soniox(stt-async-v5 / tts-rt-v1)<120ms STT
Ultra-Fast STT & Multilingual TTS • 60+ Global Languages with real-time word alignment
OpenAI(GPT-4o / GPT-4o-mini)Reasoning
Conversational Intelligence & Reasoning • Global multimodal knowledge, function calling & tool execution
Anthropic(Claude 3.5 Sonnet)Enterprise AI
Complex Enterprise Reasoning & Support • Deep context memory & nuanced policy compliance
Voice
Calling & Web Voice
Configure speech and telephony providers
Messaging
WhatsApp & Web Chat
Connect customer conversation workflows
Knowledge
Document Retrieval
Scope knowledge bases to your agents
Analytics
Conversation Visibility
Review usage and call outcomes
Interactive ROI Estimator
Calculate Your Call Center Cost Savings
See how much your organization saves by replacing manual outbound and inbound queues with autonomous voice agents.
Human Support / Telesales Agents15 Agents
2 Agents50 Agents100 Agents200+ Agents
Average Talk Time per Agent / Day180 Mins (3.0 hrs)
30 mins2 hours5 hours8 hours
Zero training & onboarding cost
24/7 Availability with zero hold time
Instant scalability to 10,000+ calls
100% CRM transcript sync
Estimated Monthly Savings 69% Savings
₹3,32,580
Saved every month compared to human call staffing
Traditional Call Center Cost:₹4,80,000/mo
Nexyantra AI Calling Cost:₹1,47,420/mo
Total Monthly Minutes Handled:70,200 mins
Includes SIP trunking, LLM compute, and CRM integrations.
Example Workflows
How can teams use Nexyantra?
Illustrative scenarios for planning an agent. Availability depends on the connected providers and tools.
An admissions agent can answer questions from an approved knowledge base and capture a prospective student's enquiry.
School admissions
Illustrative workflow
A clinic can configure appointment reminder conversations and route scheduling questions through approved tools.
Appointment reminders
Illustrative workflow
A sales team can collect a lead's requirements and configure follow-up steps across calling and messaging channels.
Sales follow-up
Illustrative workflow
Frequently Asked Questions
How can Nexyantra support your customer conversations?
What can I run on Nexyantra?
Nexyantra is one workspace for AI calling, WhatsApp, web chat bots and web voice. Teams configure an agent, connect the channel and its providers, and review transcripts and outcomes.
Which customer conversations can Nexyantra support?
Nexyantra provides AI calling, WhatsApp, web chat and web voice workflows. Available features depend on the configured channel, provider credentials and agent tools.
What affects an AI voice agent's response time?
Voice response time depends on speech recognition, language-model generation, speech synthesis, network conditions and the selected transport. Test the complete conversation with your providers and target region rather than adding individual provider timings together.
Can I connect phone numbers and telephony providers?
Nexyantra supports configured telephony integrations for inbound and outbound AI calling. Number availability, caller ID permissions, SIP setup and transfer options depend on your carrier account and deployment.
How does Nexyantra connect to WhatsApp?
Nexyantra integrates with the WhatsApp Cloud API for messaging workflows. Business verification, template approval and messaging eligibility are controlled by Meta and depend on the connected business account.
Can Nexyantra agents speak Indian languages?
Language and voice availability depend on the selected speech provider and model. Select a compatible language and persona in the agent editor, then audition your actual scripts before using the agent with customers.
How does Nexyantra use an uploaded knowledge base?
Nexyantra processes supported documents into searchable knowledge for an agent. PDF and DOCX uploads can be processed asynchronously. Configure which knowledge bases an agent can retrieve from, and review retrieval results before relying on customer-facing answers.
How can I estimate Nexyantra calling and messaging costs?
The pricing page provides plan information and usage estimates. Calling costs depend on telephony, speech and language-model providers, call duration and the applicable platform plan. Messaging costs depend on the connected channel and its current billing rules.
Can a Nexyantra workflow hand a conversation to a person?
Human handoff depends on the agent's configured tools and channel routing. Set up and test the destination, escalation conditions and staff availability before enabling a customer-facing workflow.