Voice AI built for Bharat.
Build, launch and scale AI voice & chat agents for phone calls and your website. Ultra-low latency, genuine Indian languages, and pricing that’s near provider cost.
Built on the best of voice AI. Switchable any time
Test a real agent. No signup
Chat with a live Bolcho agent on the right, in English or Hindi. Or pick up your phone and actually talk to one.
Call our demo line
+91 80312 1819
- Ask it something in Hindi, then switch to English mid-sentence
- Ask about pricing or what it can do
- Notice how fast it responds
Bolcho
Online · replies instantly
Powered by Bolcho AI
Everything you need to give your business a voice
A lot of hard engineering, so you don't have to.
A CRM built for voice AI agents
Build an agent in Bolcho, drop it into your CRM, and let it work like a human rep, from the first lead to the final follow-up.
New lead captured
added to Bolcho CRM
Two-way sync with your CRM, or run it all on Bolcho's built-in one.
Plug into the best, switch any time
Integrated with the leading providers at every stage. Pick per agent, mix and match, and fail over automatically.
Speech-to-Text
LLM brain
Text-to-Speech
Telephony
Realtime media
Bring your own keys or use ours. Set universal provider keys once in the admin panel, every agent inherits them automatically.
One pipeline. Best-in-class at every hop.
We pick the right provider for each stage, and fail over automatically if one blips.
1 · Listen
Speech → Text
Deepgram · Sarvam
2 · Think
LLM brain
xAI Grok · GPT · Claude · Sarvam
3 · Speak
Text → Speech
Sarvam · Azure · xAI · ElevenLabs
The boring, hard engineering done right
Latency obsessed
Local turn-detector, streaming synthesis, adaptive barge-in and prompt caching, tuned so conversations feel real, not stilted.
Language director
A dedicated per-turn skill locks the right language and switches the instant a caller does, no awkward English replies to a Hindi question.
Cost transparency
Token-accurate metering of STT, LLM and TTS, with cached-input discounts, so your bill maps to real provider cost.
Provider resilience
STT, LLM and TTS each run behind a fallback adapter, if one provider stumbles mid-call, the next takes over seamlessly.
Around 20% cheaper per conversation
Most platforms mark up minutes and hide the math. We don’t. You pay near raw provider cost, and real engineering shaves roughly a fifth off that, automatically, on every call.
~20%
lower cost per conversation
₹
every call metered to the paisa
Per-sentence audio cache
Greetings, confirmations and common replies are synthesized once, then streamed from cache on every later call. Repeated speech costs ₹0, and there's no synthesis latency either.
Prompt caching
Long system prompts and knowledge context are cached, so repeated input tokens bill at a fraction (≈10–50%) of the normal rate instead of full price every single turn.
Smart provider routing
Each stage runs on the most cost-effective capable provider (e.g. Sarvam for Indic voices) with automatic failover. You get quality without paying the premium tier by default.
Near-cost pass-through
We don't mark up minutes. Every call's STT, LLM and TTS is metered to the token and character and shown in ₹, so your bill maps to real provider cost, not a black box.
No more boring chatbots
Drop Bolcho’s chat widget on any site in one line. It’s the same assistant as your phone agent, grounded in your knowledge base, capturing leads, with full conversation analytics. And everything is an API.
<script src="https://app.bolcho.ai/widget.js" data-agent="your-agent-id"></script>Build an agent by talking to it
Our Playground lets you describe your agent out loud (purpose, tone, languages, call flow) and we generate a working agent. Then refine voice, knowledge and tools in a click.
Try the PlaygroundBuilt API-first, for engineers
Everything in the dashboard is an API. Spin up agents, place calls, stream transcripts and pipe events straight into your stack. Clean REST, signed webhooks, scoped keys, and server-side tools your agents can call mid-conversation.
REST API
Versioned, predictable, JSON.
Webhooks
Call, transcript & lead events.
API keys & scopes
Granular, per-workspace.
Server-side tools
Agents call your functions.
Structured outputs
Schema-validated JSON.
Idempotency
Safe retries by design.
$ curl -X POST https://api.bolcho.ai/v1/telephony/dial \
-H "Authorization: Bearer $BOLCHO_KEY" \
-d '{
"agentId": "ag_92f3…",
"fromNumberId": "num_05a7…",
"to": "+9198XXXXXX21"
}'
{ "callId": "call_7c4…", "status": "ringing" }
# then receive events on your webhook:
# call.ended · transcript.ready · lead.updatedFrequently asked questions
Everything you need to know about building voice AI with Bolcho.
What is Bolcho?
Bolcho is an India-first voice AI platform for building AI agents that handle phone calls and website chat. You can create voice and chat agents that speak Hindi, English and other Indian languages, connect a phone number, and go live in minutes.
Does Bolcho support Hindi and other Indian languages?
Yes. Bolcho speaks genuine Hindi, Hinglish, Tamil, Telugu, Bengali and more, and a dedicated language director switches the language mid-call the moment a caller does.
Can Bolcho make and receive phone calls?
Yes, both inbound and outbound. You can buy a number from Bolcho or bring your own carrier over Plivo or SIP, then route any number to your AI assistant in minutes.
How much does Bolcho cost?
Bolcho bills near raw provider cost, metered to the paisa in rupees, and engineering like audio and prompt caching makes it roughly 20% cheaper per conversation. It is free to start, with no credit card required.
Can I add a voice or chat agent to my website?
Yes. The same assistant runs as an embeddable chat widget you add in one line of code. It is brandable, captures leads, and shows sentiment and conversation analytics.
Do I need to know how to code to use Bolcho?
No. You can build an agent entirely in the dashboard, or just by talking to the Playground. Developers also get a full REST API, webhooks and server-side tools.
How is Bolcho different from Vapi, Retell and other voice AI platforms?
Most platforms are English-first and mark up minutes. Bolcho is built for India, with native Indian languages, built-in telephony and a CRM for AI agents, at pricing near provider cost.
Can the agent use my own knowledge base?
Yes. Upload your documents and the agent grounds its answers in them, so it never makes things up. Each assistant also has its own memory that does not bleed across agents.
Can Bolcho qualify leads and make outbound sales calls?
Yes. Bolcho dials your leads automatically, qualifies them in a natural conversation, and books the serious ones, then logs everything and can follow up over WhatsApp.
Does Bolcho have an API for developers?
Yes. Everything in the dashboard is available over a clean REST API with webhooks, scoped API keys, structured outputs and server-side tools your agents can call mid-conversation.
Which voices and providers does Bolcho support?
Bolcho works with the leading providers and lets you switch any time: Deepgram and Sarvam for speech-to-text; xAI Grok, OpenAI, Anthropic, Google and Sarvam for the LLM; and Sarvam, Azure, xAI, ElevenLabs, Cartesia and Smallest for voices.
How do I get started with Bolcho?
Sign up free, build an agent in minutes using a template or the talk-to-build Playground, connect a number or the chat widget, and go live. You can test instantly with a live call or the web demo.
Ready to give your business a voice?
Spin up your first agent in minutes. No credit card to start.