Dhvani AI
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Voice infrastructure for last-mile outreach

The last mile answers the phone.

Dhvani runs advisories, reminders, eligibility checks and feedback calls in Indian languages — and in the regional dialects underneath them — over the noisy, code-mixed, feature-phone lines your outreach actually runs on.

Book a pilot campaign See a real advisory
  • Thousands reached in hours
  • Works on feature phones
  • Deploys in your data boundary

Every call opens with this

यह कॉल पूरी तरह मुफ़्त है।
“This call is completely free.”

No document number is asked for, and no payment is involved at any stage — said out loud, in the caller’s own dialect, inside the first ten seconds.

What a call sounds like

Not translated Hindi. The dialect they actually speak.

Generic models hear a caller’s dialect and answer in the textbook register — or ask them to repeat until they hang up. Dhvani is tuned on the vocabulary outreach runs on: crop names, scheme names, clinic names, and the code-mixing in every real sentence.

  • Holds up on a 2G line with a tractor running behind it.
  • Answers follow-up questions instead of reading a script.
  • Refuses anything outside the department’s authority.

Unseasonal Rain Warning — Harvest Advisory

Bhojpuri · Outbound · 00:47

Illustrative transcript — a representative call, not a recording of a named citizen.

Dhvani

नमस्कार। हम कृषि विभाग के ओर से बोल रहल बानी। रामेश्वर सिंह जी बानी?

Namaskar. I am calling on behalf of the Agriculture Department. Is this Rameshwar Singh?

Citizen

हँ, हमही बानी।

Yes, speaking.

Dhvani

सर, अगिला तीन दिन में तेज बरखा के चेतावनी बा। कटल गेहूँ ढाँक के रखीं, खरिहान में पानी ना जमे। ई कॉल एकदम मुफ्त बा — हम कवनो कागज़ के नंबर ना माँगब, ना पइसा के कवनो बात बा।

Sir, heavy rain is forecast over the next three days. Keep the harvested wheat covered and don’t let water collect on the threshing floor. This call is completely free — I will not ask for any document number, and no payment is involved.

Citizen

अच्छा… त छिड़काव कब करीं?

I see… so when should I spray?

Consent: recorded DND: checked Transcript: retained

One workflow, every channel

Define the campaign once. Run it everywhere.

An advisory, a reminder, an eligibility check, a feedback call. The same definition drives all three channels — no rebuilding per medium.

Outbound calls

Push an advisory or reminder to a beneficiary list. Thousands of conversations placed in parallel, each one adapting to who actually picks up.

Advisory · Reminder · Eligibility

IVR

Keypad menus where structure matters and voice where it doesn’t — so the flow still works on a handset with a cracked mic in a crowded market.

Menus · Confirmations · Opt-out

Inbound helpline

An always-on number a citizen can ring back. No queue, no office hours, no per-minute charge to the person calling.

24×7 · Callback · Escalation

Citizens pay
nothing. Ever.

Every Dhvani call says so out loud in the first ten seconds — no document number is asked for, no payment is involved at any stage.

Impersonating government outreach is the most common rural fraud there is. Saying the opposite, in the caller’s own dialect, is the single most useful thing an outreach call can do. Suspicion gets treated as sensible, never as rudeness.

Built for the conditions

Where generic voice models fall over.

Noise

Noisy phone lines

Tuned on real call audio, not studio recordings. Handles clipping, wind, tractors and the mandi at full volume.

Code-mixing

Sentences that switch

A regional verb, a Hindi noun, an English scheme name — in one breath. Handled as normal speech, not an error case.

Hardware

Feature phones

No app, no smartphone, no data plan, no literacy requirement. If it rings, it works.

Vocabulary

Local terms

Crop, health and scheme vocabulary a general model has never heard — local grain and clinic names, and every scheme by the name people actually use.

Speaks

  • हिन्दी
  • मराठी
  • বাংলা
  • தமிழ்
  • తెలుగు
  • ಕನ್ನಡ
  • + more Indian languages

And the dialects underneath them — Bhojpuri, Magahi, Maithili, Awadhi, Marwari — where a general model hears noise and a citizen hears a stranger.

Sovereignty and record

Procurement-ready by construction.

Nothing here is an add-on module. Model choice, data residence and the audit trail are how the system is built.

  • Sovereign model choice

    Run on Bhashini or another Indian stack where policy requires it. The campaign definition does not change when the model does.

  • Your data boundary

    Deploy inside your own cloud or state data centre. Citizen numbers, recordings and transcripts never leave the perimeter you control.

  • Consent and DND, enforced

    Checked before the dial, recorded on the call, honoured on every later campaign. An opt-out is permanent and it is global.

  • A full audit record

    Every call carries its transcript, outcome and consent state into a record you can hand to an auditor without preparing anything.

Campaigns already running

Start from a shape that works.

  • Agriculture

    Soil Health Card — Collection Reminder

    Outbound · reminder

  • Agriculture

    Kisan Credit Card — Awareness Call

    Outbound · eligibility

  • Agriculture

    Weather & Advisory Line

    Inbound · always-on

  • Health

    Anaemia Screening Camp — Invitation

    Outbound · advisory

  • Health

    Post-Discharge Follow-up — Recovery Check

    Outbound · feedback

  • Schemes

    Pension Life Certificate — Annual Reminder

    Outbound · reminder

Run one campaign. See what a morning of calls returns.

Bring a district, a beneficiary list and one advisory. We run it, and hand back the full record — every call, every outcome, every consent state.

Book a pilot campaign Talk to the team