Voice AI Platform India: Build Multilingual Phone Agents

Bolti, a voice AI platform for building conversational phone agents, helps businesses deploy production-ready voice assistants in India with sub-second turn-taking and real interruption handling. Whether you want to automate outbound sales, handle customer support, or screen candidates, you can set up a high-performance voice agent on our platform. We offer a pay-as-you-go pricing model at just ‹7/minute, alongside a free trial with 50 minutes to get you started immediately.

Why Choose a Dedicated Voice AI Platform in India?

Building a voice agent that actually works over a standard Indian mobile network is challenging. If you try to manually glue together a speech-to-text (STT) engine, a large language model (LLM), a text-to-speech (TTS) engine, and a SIP trunk, you will run into massive latency and quality issues. A dedicated voice AI platform solves this by running a unified, real-time audio pipeline designed specifically for telephony.

When evaluating a voice AI platform in India, you must look for three critical capabilities:

• Telephony-Grade Infrastructure: The platform must support direct integration with Indian telecom providers and SIP trunks, including compliance with local regulations like 140-series number requirements.
• Sub-Second Latency: In a natural conversation, any response delay over 800ms feels sluggish and awkward. The platform must process, think, and respond in real time.
• True Interruption Handling: If a customer speaks over the AI agent, the agent must stop talking immediately and listen, just like a human operator would.

Which Indian Languages and Accents Does Bolti Support?

India is a multilingual market where customer service cannot rely on English alone. Bolti supports Hindi, Marathi, Tamil, Telugu, Bengali, Gujarati, and over 80 global languages and regional dialects.

To deliver natural-sounding conversations, we partner with specialized localized AI providers alongside global giants. You can mix and match providers per agent to optimize for your specific target audience:

• Indic-Optimized STT: We support Fennec and Sarvam-backed speech-to-text engines. These models are trained specifically on Indian accents, mixed-language speech (like Hinglish), and noisy environments, outperforming standard global STT vendors.
• Localized TTS Voices: Through our integrations with SarvamAI (featuring voices like Anushka) and SmallestAI (featuring voices like Irisha), your agents sound like native speakers rather than synthetic, westernized text-to-speech engines.
• Global Standards: For English-first or global campaigns, you can easily toggle on industry leaders like Deepgram, Cartesia, and ElevenLabs.

How Do You Configure Your Voice Agent's Stack?

Every voice call on Bolti is powered by four distinct layers working together in harmony. You do not have to write complex integration code; you simply configure these options directly from your dashboard or via our open REST API.

1. Speech-to-Text (STT): Transcribes the caller's spoken words into text. This is the single biggest factor in perceived latency.
2. Large Language Model (LLM): The "brain" of your agent. Reads the transcript and decides what to say next or which backend APIs to call. You can choose ultra-fast models like Llama on Groq for simple tasks, or reasoning models like OpenAI GPT-4o and Gemini 2 Pro for complex, branching customer queries.
3. Text-to-Speech (TTS): Converts the LLM's text response back into high-quality, natural audio.
4. Telephony: Carries the call over public networks. You can purchase phone numbers directly from Bolti or bring your own carrier (BYOC) using Twilio, Plivo, or Exotel.

Explore our diverse Bolti use cases to see how Indian businesses are combining these layers to run automated collections, schedule appointments, and qualify inbound leads.

Does Bolti Keep Your Customer Data Inside India?

Yes, data residency is a hard constraint for Indian enterprises operating in finance, healthcare, insurance, and ecommerce. Bolti is built to comply with local data protection frameworks, including the Digital Personal Data Protection (DPDP) Act.

By default, Bolti's managed cloud runs on E2E Networks infrastructure physically located in India. Here is how your data is distributed and secured:

• Application Data & Transcripts: Your agents, configurations, and call transcripts are stored in secure AWS RDS PostgreSQL instances located in the India (ap-south) region.
• Call Recordings: Compressed audio files of your phone calls are stored in secure, India-based S3-compatible object storage with signed, temporary playback URLs.
• In-Flight Audio: Live audio streamed during active calls is processed in the memory of our real-time audio service running on Indian hosts. It is never persisted at the transport layer.

If your business requires strict data isolation, we also offer enterprise-grade deployments, including on-premises hosting, sub-account white-labeling, and runtime PII redaction.

Try Bolti for Your Indian Business

Deploying a voice AI agent does not require weeks of development. With Bolti, you can design, test, and launch a multilingual voice agent in minutes. Our transparent Bolti pricing starts at just ‹7/minute pay-as-you-go, with no hidden platform fees.

Get started today by signing up for a free trial with 50 minutes of call time and experience our sub-second conversational latency firsthand.

Frequently Asked Questions

How much does Bolti cost for businesses in India?

Bolti operates on a simple, pay-as-you-go pricing model starting at ‹7 per minute. There are no heavy upfront commitments, and you can sign up for a free trial that includes 50 free minutes to test your setup.

Can I use my existing Indian phone numbers with Bolti?

Yes. Bolti supports Bring Your Own Carrier (BYOC). You can easily connect your existing SIP trunks or virtual number providers like Exotel, Twilio, or Plivo directly to your Bolti agents.

Does Bolti support regional Indian languages?

Yes, Bolti is optimized for India. It supports Hindi, Marathi, Tamil, Telugu, Bengali, Gujarati, and many other regional languages. We integrate with localized providers like SarvamAI and Fennec to ensure accurate speech recognition and natural-sounding local accents.

Is Bolti compliant with Indian data protection laws?

Yes. Bolti's managed cloud is hosted locally on E2E Networks infrastructure in India. Your application data, call transcripts, and voice recordings remain within the country, aligning with DPDP Act requirements.