Built and hosted in India
- English
- Hindi
- Bengali
- Telugu
- Marathi
- Tamil
- Kannada
- Malayalam
- Gujarati
Voice AI that understands India.
Understand every customer call in nine Indian languages, and let AI agents make the calls for you.
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Products
What you can do with SarvBol
Use one, or use them together, from a single account.
Call analysis
- You send
- Your call recordings, straight from your cloud storage or uploaded.
- You get
- A speaker-by-speaker transcript, with sentiment, call outcome, next steps and a summary for every call.
- Used for
- Sales and support teams, collections, quality audits
Agentic calling
- You send
- Your call goal and the list of people to call.
- You get
- AI agents that make the calls, hold a real conversation and record the outcome of each one.
- Used for
- Lead qualification, follow-ups and reminders, collections
Speech APIs
- You send
- Live audio, recordings or text.
- You get
- Speech-to-text (STT) in real time or in batch, and natural text-to-speech (TTS) voices.
- Used for
- Developers adding voice to their own products
Call analysis
Every call, understood.
Built for the way Indian calls really sound, and for the way your data should be treated.
Plugs into your storage
Connect your cloud storage once. We read the recordings from there and write the results straight back.
- Amazon S3
- Azure Blob Storage
- Google Cloud Storage
Your data stays yours
With your own storage connected, we never keep a copy of your recordings: each one is processed, then deleted from our side. And we never train our models on your data.
Made for noisy calls
Indian call recordings are noisy: traffic, busy offices, weak phone lines. Our pipeline is built to cut through it.
Agentनमस्ते! आपकी EMI कल due है, क्या आप payment कर पाएँगे?
Customerहाँ, मैं कल शाम तक कर दूँगा।
Summary The customer agreed to pay the EMI by tomorrow evening.
Optimised voice AI models, our own infrastructure and a speech-to-text pipeline we built ourselves let us offer some of the lowest per-minute rates in the industry. No subscriptions, and credits never expire.
Agentic calling
AI agents that pick up the phone.
Every call runs on an orchestrator we designed from the ground up. It isn't a wrapper around an off-the-shelf voice-agent framework, but our own way of building and running AI phone calls.
Quick replies, smooth recovery
The agent answers without awkward pauses and gets back on track when callers interrupt, talk over it or go quiet. Built for some of the best response times and call completion in the industry.
Hears India clearly
Our own speech-to-text (ASR), hosted on our own infrastructure and tuned for phone-line audio and the noisy places most Indian calls happen in.
Our own AI, end to end
The large language model (LLM) that decides every reply is self-hosted too, not rented from a third-party AI service.
Plugs into your telephony
Ready-made connections to Exotel, Twilio and Plivo, with Ozonetel and Tata Smartflo available on request.
Bring your own voice.
Already have a text-to-speech (TTS) model you love? Plug it into your agents. Or choose one of our natural Indian voices.
Hear Ria, one of our voices
Short sample messages in Hindi.
Deep tech, made in India
We invent the technology we build on.
SarvBol comes from DeepMindSecure Technologies, a DPIIT-recognised Indian startup. We design our own hardware and AI so that voice technology can be private, trustworthy and at home in the way India speaks. One of our inventions is already patented, and more are on the way.
- 1Patent granted
- 4More pending
- 6Research themes
A patent is granted only when an idea is found to be new and inventive. Ours was examined and granted by the Indian Patent Office.
AI you can trust, down to the chip
Software can be tampered with. We design devices that check themselves every time they start, and refuse to run an AI model that has been altered. Trust is built into the hardware, not added on top.
Your voice stays with you
Voice AI that works on a small device with no internet connection. What you say is understood on the spot and is never sent anywhere.
Understands India's many ways of speaking
The same language sounds different from one district to the next. Our work teaches AI to recognise those local differences, so it understands people the way they naturally speak.
Gets smarter without listening in
Our devices learn from everyday use and share only what they have learned, never the recordings. The AI improves for everyone while each person's voice stays private.
Works only where it should
AI that knows where it is, and switches on only in the places it has been approved for. A simple way to keep sensitive technology and data where they belong.
Big intelligence, small footprint
Advanced AI usually needs a data centre. We design it to run on small, low-power devices, so it can sit in a bank branch, a government office or a vehicle. The AI chip stays switched off until the device has confirmed it is safe to run.
Every one of these ideas starts from the same question: how do you build voice AI that people can trust with what they say?
See our filings
| Title | Number | Status |
|---|---|---|
| Secure On-Premises AI Inference Appliance with Cryptographic Integrity | IN 588486 | Granted · 6 May 2026 |
| Low-Power Dialect-Adaptive Edge ASR Device with Federated Differential-Privacy Training | Application 202511081807 | Patent pending |
| System and Method for Ultra-Low-Power Offline Speech Processing with Geo-Locked Secure Updates | Application 202511082098 | Patent pending |
| Speech recognition that adapts to regional dialects | Application 202511067039 | Patent pending |
| Hardware-secured, low-power AI processing | Application 202511068406 | Patent pending |
Patents and applications are held by DeepMindSecure Technologies Private Limited. “Patent pending” means an application has been filed with the Indian Patent Office and is not yet granted. Status as of October 2026.
Real deep tech
Our expertise runs from silicon chips, to AI models, to the real conditions of Indian phone calls.
Our own GPU infrastructure
Our speech recognition and language models run on hardware we own, not on any cloud provider.
Our own call-analysis pipeline
Designed end to end for Indian calls, from the raw recording to the final analysis.
Our own agentic calling orchestrator
Custom-built to run live AI phone calls, from the first hello to the final outcome.
Every Indian, included
Above all, one goal drives us: making sure every Indian is part of the AI revolution, in their own language.
FAQ
Questions, answered.
What is SarvBol?
SarvBol is voice AI built for India. It analyses customer calls in nine Indian languages, runs AI agents that make phone calls for you (agentic calling), and offers speech-to-text (STT) and text-to-speech (TTS) APIs, all built and hosted in India.
Which Indian languages does SarvBol support?
Call analysis is live in English, Hindi, Bengali, Telugu, Marathi, Tamil, Kannada, Malayalam and Gujarati, including code-mixed speech such as Hinglish. Real-time speech-to-text is optimised for Hindi, English and Hinglish.
What makes SarvBol's Indic AI voice models different?
Our speech recognition (ASR) models are optimised and fine-tuned for Indian languages, regional accents and real phone-line audio, and they run on our own infrastructure in India.
How does the speech-to-text (STT) API work?
Send live audio or recordings and get transcripts back in real time or in batch, with speaker labels, in the speaker's own script, in Roman script, or translated into English.
Does SarvBol offer text-to-speech (TTS) in Indian voices?
Yes. Our text-to-speech gives natural Hindi and Hinglish voices for phone calls and apps. For AI calling agents you can also bring your own TTS model.
What is agentic calling?
AI agents that make real phone calls: they hold a natural conversation, handle interruptions and record the outcome of every call. SarvBol's agents run on our own orchestrator, with our own speech-to-text and a self-hosted large language model (LLM), and connect to Exotel, Twilio and Plivo.
What does call analysis include?
Every recording gets a speaker-by-speaker transcript, sentiment, call outcome, next steps and a summary. Connect Amazon S3, Azure Blob Storage or Google Cloud Storage and the results are written straight back to your storage.
How is SarvBol priced?
Simple per-minute pricing, with no subscriptions, and credits that never expire.
Is my data safe with SarvBol?
SarvBol is built and hosted in India. With your own storage connected, we never keep a copy of your recordings, and we never train our models on your data.