Vaani — AI voice agents for business calls

What does Vaani actually do?

Vaani is a platform for building AI voice agents that talk to customers over the phone or in a browser. A business defines the job, supplies its information and connects any tools the agent needs. The agent can then answer questions, collect details, qualify interest or arrange a handoff to a person.

For example, a sales team can use an agent to ask a prospect qualifying questions before a specialist calls back. A support team can connect an order lookup tool so the agent can answer with current information. Vaani AI Research Private Limited operates the service.

Which calling tasks fit the platform?

Vaani's published examples cover outbound lead qualification, education admissions and inbound product enquiries. These are useful starting points when a team has repeatable questions and a clear next step, such as a booking, callback or transfer.

The platform provides controls for interruptions, pauses, silence handling and voice delivery. It also advertises multilingual conversations and language switching. Test the actual accents, terminology and languages your customers use: available recognition engines, models, voices and telephone carriers affect the result. Public marketing latency figures should not be treated as a guaranteed response time for your deployment.

Build and test an agent with Teacher AI

1. Prepare a brief describing the business, intended callers, desired language, successful outcome and matters requiring a person.
2. Use the agent creation flow. The documented Vibe-Code option accepts an everyday English description; Teacher AI also asks clarifying questions.
3. Review the proposed prompt, greeting, voice, tools and language settings. Accept the changes only after checking the boundaries.
4. Add business knowledge and the actions the agent may perform.
5. Connect telephony for a real phone test, then call your own number. Check the opening, interruptions, missing-information handling and transfer path.
6. Afterward, inspect Call History, the transcript and captured outcome. Refine the agent and test again before a campaign.

Give answers context and make actions useful

The knowledge base accepts PDF, DOCX, TXT, CSV and Markdown, and can index help-center pages. Supply current policies, prices and operating hours, with a clear fallback when the answer is absent.

Configured REST tools let an agent retrieve an order or perform a booking during a conversation. The integration guide also documents WhatsApp Business messaging and Cal.com booking. Each connection needs its own configuration and authorization; these examples do not imply a ready-made connector for every CRM.

Memories can reuse selected previous-call context and share it between agents. That can reduce repeated questions, but teams should check that the retrieved history belongs to the right customer and task.

Connect phone calls, browser voice and your application

Vaani supports connected telephone numbers, customer SIP telephony and browser WebRTC. Carrier coverage determines where phone calling is available. For a campaign, select an agent, upload a CSV containing contact_number and name, then configure calling hours, retries and concurrency.

Developers can use REST, a Python SDK or the documented MCP server. Keep API keys on the server. A successful dispatch response only means the request was accepted; retain call_id and verify the actual result. Post-call transcripts, summaries and extracted fields arrive asynchronously. The first-call guide explains the phone test prerequisites.

What does a call cost?

Checked on 1 November 2026, the public offer uses a prepaid wallet with usage-based billing, plus negotiated enterprise arrangements. The total can include telephony, speech recognition, the language model, speech synthesis, the platform fee and enabled extras. The INR view lists ₹1 per minute for the platform component, not the complete call.

The comparison includes two simultaneous calls for pay-as-you-go. Extra capacity and number rental can cost separately. Bringing supported provider keys moves those component charges to the provider, while Vaani's remaining charges still apply. Browser voice avoids telephony charges but can still incur the other components. Consult Vaani's pricing and estimator for the account currency, billing pulse and current offer.

Check recording retention before deployment

The pricing table lists 30-day retention for pay-as-you-go and zero retention for enterprise. The general privacy policy separately allows data, including recordings, to be retained for up to 24 months or as legally required. Confirm which records and contractual terms each statement covers.

The policy says voice-model improvement requires explicit consent and allows processing by service vendors and outside India. Establish the required processing region, retention and deletion arrangement before using real customer records.

The policy also allows access, correction, consent-withdrawal and deletion or restriction requests, subject to legal limits.

Frequently asked questions

Is Vaani free to use?

The homepage invites users to start free, but the inspected public pages do not establish a permanent free calling allowance. Production usage is billed; free launch add-ons do not make the whole call free.

Can it answer from our own documents?

Yes. Supported document uploads and indexed help pages can supply business context. Keep the source material current and define when an unanswered question should go to a person.

Can we keep our telephony?

The developer pages support customer SIP carriers. Number compatibility, destinations and setup depend on the carrier; confirm your particular arrangement.

Are recordings automatically excluded from training?

The policy describes voice-model enhancement with explicit consent. Confirm your consent settings and contracted processing scope rather than assuming a universal no-training or zero-retention arrangement.

Official resources

• Agent and API documentation: configuration, integration and result retrieval.
• Contact the Vaani team: carrier coverage, enterprise terms and retention clarification.