AI phone agents that actually sound human
Automate your calling operations. Deploy conversational AI agents for customer support, lead qualification, and appointment booking at 90% lower cost. Optimized for Indian accents, regional languages, and TRAI compliance.
Lead Qualification ↗
High-efficiency agents built to qualify inbound forms and route high-intent callers.
Anushka — Native Hindi
AI Agents Built for Every Industry
Purpose-built agents that speak your industry's language — trained on domain-specific scripts, compliance frameworks, and regional dialects. Select an industry and click any agent to hear them.
Real Estate AI Agents
RERA CompliantQualify property buyers, schedule site visits, and answer RERA-compliant queries instantly.
Rohan
Property Lead Qualifier
Indian English
“Hello! I'm Rohan, your real estate assistant from Closerr. I see you've enquired about a 3 BHK in Whitefield. May I ask — are you looking for immediate possession or an under-construction property? I ...”
Priya
Property Viewing Coordinator
Native Hindi
“Namaste! Main Priya hoon, aapki real estate assistant. Aapne haal hi mein Pune mein 2 BHK ke liye enquiry ki thi. Kya main aapka budget aur preferred location confirm kar sakti hoon? Main aapke liye k...”
Don't see your industry?
We build custom agents for any vertical — from agriculture to fintech, government to gaming. Our team can design, train, and deploy in 72 hours.
Everything you need to automate calling at scale
Enterprise-grade infrastructure designed for low-latency call operations.
Voice AI Engine
Sub-400ms Speech Loop
Powered by Sarvam Saaras & Bulbul, our TTS/STT pipeline streams phoneme-level audio tokens with zero turn-taking lag. Supports Hindi, Kannada, Tamil, Telugu, and English with native accent accuracy.
Compliance Shield
DND & Consent Control
Configure calling preference blocklists, consent verification rules, and opt-in parameters before any campaign launches. Automatic AI identity disclosure announcements keep you legally compliant.
CAG-First Cache
Context-Aware Retrieval
Upload your sales scripts, product FAQs, and knowledge docs once. Closerr caches them in a Redis-backed context store so agents pull accurate answers in under 10ms — eliminating hallucinations.
Outbound Campaign Engine
Bulk Dialing & Scheduling
Schedule high-volume calling campaigns with CSV lead uploads, real-time call status webhooks, retry logic, and a live analytics dashboard tracking connection rates, conversation duration, and conversion outcomes.
Start with 100 free calling minutes
No credit card required. Instant API access. Built for India & global markets.
How Our Sub-400ms Audio Pipeline Works
Experience the millisecond-by-millisecond journey of a call through our low-latency infrastructure.
SIP Inbound/Outbound
Telephony call is established via SIP trunks. Real-time raw PCM audio streams are captured instantly.
Sub-80ms VAD
Voice Activity Detection monitors silence threshold. Interruptions are triggered immediately if client speaks.
CAG-First Context
Fast context checking against greeting logs and pre-cached corporate knowledge prior to LLM mapping.
Sarvam & Bulbul LLM
Regional LLMs evaluate user transcription, context guides response content dynamically in multiple dialects.
TTS Audio Synthesis
Response text is synthesized to fluid voice streams and piped back onto active SIP channels instantly.
Built for Scale & Compliance
A production-grade telephony system designed for high-volume concurrent calls, regional language accuracy, and enterprise compliance controls.
System Operations Dashboard
77,258
Outbound + Inbound callbacks
142,520 mins
Telephony channel uptime
₹1,43,150.00
STT + LLM + TTS + SIP
372 ms
99th-percentile response delay
| Lead Name | Phone Number | Agent | Status | Duration | Cost | P99 Latency |
|---|---|---|---|---|---|---|
| Ananya Sharma | +91 98765 43210 | Priya (Native Hindi) | COMPLETED | 45s | ₹1.35 | 360ms |
| Rahul Verma | +91 87654 32109 | Anushka (Lead Qualifier) | FAILED | 0s | ₹0.00 | 0ms |
| Sneha Patel | +91 76543 21098 | Vikram (Support Agent) | COMPLETED | 120s | ₹3.60 | 410ms |
Closerr AI is engineered to handle production-grade telephony at scale. By integrating native Indian language models directly with low-latency SIP trunks, our platform enables conversational agent interfaces that feel natural. We leverage regional model synthesis (Sarvam Saaras & Bulbul) to enable accent accuracy across multiple Indian dialects, including Hindi, Kannada, Tamil, and Telugu.
Our compliance tools help you manage calling preferences dynamically. Administrators can upload DND check blocklists and configure rules to exclude contacts prior to dialing outbound campaigns. For global marketing campaigns, we support the integration of custom opt-in and local consent parameters directly within our API gateway payloads, helping keep your outbound campaigns structured and aligned with regional regulatory requirements.
With Context-Aware Retrieval (RAG) caching, our system stores active sales scripts and corporate knowledge documents in a local cache. When a customer interrupts an agent mid-sentence, our voice loop detects speech, stops synthesis, and retrieves the relevant context dynamically, resolving queries accurately without hallucinations.
Cost Savings Calculator
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| Capability / Metrics | Closerr | Legacy Telephony | Basic Wrapper APIs |
|---|---|---|---|
| Per-Minute Rate (India) | ₹5 – ₹9 | ₹4.50 – ₹6.00 | ₹12.00 – ₹18.00 |
| Conversational Latency | Sub-400ms Loop | N/A (Human delay) | 1,200ms – 2,000ms |
| Compliance Tools | Configurable | Manual check rules | No DND registry |
| Consent Parameters | Fully Supported | High litigation risk | No consent checks |