OpenAI Select PartnerAI Voice Agents for Business: What They Do, Where They Work and How to Start
AI voice agents answer and make phone calls in natural speech: booking appointments, answering common questions, confirming orders and qualifying leads. They work well for short, repetitive calls with clear outcomes, and they need careful design for everything else.
In this guide 9 sections
Voice is where a lot of Indian businesses still talk to customers: clinics, real estate, logistics, banks and local services. As an OpenAI Select Partner, we are asked about voice agents more every month. They are useful, but only for the right calls.
Where to start
Pick one call type that is frequent, short and has a clear outcome, such as booking or confirming an appointment. Automate that well before anything else.
How a voice agent works
- Speech recognition turns the caller's words into text.
- A language model decides what to say or do, using your rules and data.
- Tools let it act: check a calendar, look up an order, create a lead.
- Speech synthesis replies in a natural voice.
Newer real-time models handle speech more directly with lower delay; the OpenAI Realtime API documentation describes one approach.
Good use cases
| Use case | Direction | Why it works |
|---|---|---|
| Appointment booking and changes | Inbound | Clear steps, connected to a calendar |
| Order and delivery status | Inbound | Answer comes from your system |
| Reminders and confirmations | Outbound | Short, scripted, measurable |
| Lead qualification | Inbound and outbound | A few questions, then hand-over |
| After-hours answering | Inbound | Captures enquiries instead of missing them |
Where to keep people
- Complaints and emotionally charged calls.
- Medical, legal or financial advice.
- Complex negotiations and high-value sales.
- Any call where a mistake is costly and hard to undo.
Thinking about AI for your calls?
Book a free 30-minute call. Creuto is an OpenAI Select Partner. We will look at your call types and tell you which are worth automating.
Book a free 30-minute call →Indian languages and accents
Callers often mix Hindi and English, switch languages mid-call or speak with strong regional accents. Test with recordings of real calls, choose models that handle your languages well, and keep sentences short and confirmations explicit ("You said Tuesday at 4 pm, is that right?").
Integrations
- Telephony: your existing numbers through a cloud telephony provider.
- Calendars, CRMs and order systems, so the agent can act, not just talk.
- WhatsApp and SMS follow-ups; see our WhatsApp Business API guide.
- Call recordings and transcripts in your CRM for review.
Compliance and trust
Tell callers they are speaking with an automated assistant. For outbound promotional calls in India, follow TRAI's rules on unsolicited commercial communication and respect consent. Recordings and transcripts are personal data under the DPDP Act.
Running a pilot
- Pick one call type and write the ideal script and outcomes.
- Connect the one or two systems the agent needs.
- Test with internal callers, then a small share of real calls.
- Review transcripts daily and fix wrong answers; see how to reduce AI hallucinations.
- Expand only when resolution and satisfaction hold steady.
How we build them
At Creuto we build voice and chat assistants connected to your systems, with a clear hand-over to people. For the text version, read how to build an AI chatbot for your business.
Frequently asked questions
What can an AI voice agent do?
Answer inbound calls, book or reschedule appointments, check order status, collect basic information, qualify leads and make reminder or confirmation calls, then hand over to a person when needed.
Can voice agents speak Indian languages?
Many speech and AI models handle Hindi and several Indian languages, including mixed Hindi and English. Quality varies by language and accent, so test with real callers before launch.
Will customers know they are talking to AI?
They should. Tell callers at the start that they are speaking with an automated assistant and offer a way to reach a person.
Are there rules for automated calls in India?
Yes. Promotional calls are regulated by TRAI's rules on unsolicited commercial communication, and customer consent and data protection rules apply. Check what applies to your use case before running outbound calls.
How do we measure success?
Track calls fully resolved without a person, hand-over rate, caller satisfaction, average call time and errors found in reviewed calls.
Want to pilot a voice agent?
We build voice and chat assistants connected to your systems, with hand-over to people and measurable goals.
About Nihar Ranjan Rout
Founder & CEO of Creuto. Over the past 8+ years Nihar has led product strategy and engineering for 50+ products, including mobile apps, custom ERPs and B2B platforms. Creuto is an OpenAI Select Partner. He works directly with founders to turn an idea into a clear plan and a launched product.
More about Nihar · LinkedIn