Multilingual in India means code-switching, not just translation
Most “multilingual” voice products can speak several languages one at a time. That is not how India talks. A Hyderabad buyer says “2BHK ki price entha, EMI option untunda?” — Telugu grammar, English nouns, no pause between them. A Chennai patient confirms “Saturday morning slot okay-va?” in Tamil with English time words. An agent that can only hear pure Telugu or pure English mishears both.
So the useful question is not how many languages an agent lists, but whether it can follow the caller between their language and English without breaking — same voice, same thread of conversation, no restart.
The seven live languages
| Language | Mixed register it handles | Where it fits best |
|---|---|---|
| Hindi | Hinglish | Delhi NCR, Uttar Pradesh, Madhya Pradesh, Rajasthan, Bihar, and as a link language in many other cities |
| Telugu | Tenglish | Telangana and Andhra Pradesh — Hyderabad, Vijayawada, Visakhapatnam |
| Tamil | Tanglish | Tamil Nadu and Puducherry — Chennai, Coimbatore, Madurai |
| Marathi | Marathi-English | Maharashtra — Pune, Nagpur, Nashik, and much of Mumbai and Thane |
| Kannada | Kanglish | Karnataka — Bengaluru, Mysuru, Hubballi-Dharwad |
| Malayalam | Manglish | Kerala — Kochi, Thiruvananthapuram, Kozhikode |
| Indian English | — | Metro professionals, B2B calls, mixed-language teams nationwide |
Census 2011 counted about 528 million first-language Hindi speakers, with Marathi, Telugu, Tamil, Kannada and Malayalam each in the tens of millions. Between them, these seven cover a large share of India's phone-based customers — but not all of them.
What it sounds like
నమస్కారం అండి, నేను Sri Sai Diagnostics నుంచి కాల్ చేస్తున్నాను. మీ report ready అయింది, ఈరోజు home delivery కావాలా?
வணக்கம் சார், நான் Chennai Motors-லிருந்து பேசுறேன். நீங்க test drive-க்கு enquiry பண்ணியிருந்தீங்க, இந்த Saturday வசதியா இருக்குமா?
नमस्कार, मी Pune Solar Solutions कडून बोलतेय. तुम्ही rooftop solar साठी enquiry केली होती, आता दोन मिनिटं बोलू शकतो का?
What is not supported — stated plainly
- —Bengali, Gujarati, Punjabi, Odia, Urdu, Assamese and Konkani are not live. Neither is any other Indian language outside the seven above.
- —There are no separate models trained per dialect. Regional accents within a live language — Rayalaseema Telugu, Kongu Tamil, Vidarbha Marathi — are not individually tuned, so test with your own callers.
- —Switching is between the agent's chosen language and English. If your callers move between two Indian languages, such as Kannada and Telugu in border towns, test that case before relying on it.
- —Tulu, Bhojpuri, Haryanvi and other languages often grouped under a larger language are not separately covered.
Hear it on a real call before you read further?
For a business in Kolkata, Ahmedabad, Ludhiana or Bhubaneswar, that means running calls in Hindi or English. Many customers there are comfortable in one of those, but some will not be, and a human telecaller who speaks the local language will still do better with them.
How Outpero runs multilingual calling
Each AI employee is set up with a language and a voice. For a business serving several states, the practical pattern is one agent per language: a Hindi agent for North Indian leads, a Telugu agent for Hyderabad, a Tamil agent for Chennai. With three channels on your number (the number includes 1; each extra is ₹649/month), a Hindi, a Tamil and a Telugu campaign can run side by side.
Routing which lead goes to which agent is usually done on the lead itself — the city, pin code or language field on the form — through Zapier, Make or a webhook. Instant lead calling then dials within 30 seconds in the right language. Every call returns a transcript, summary, sentiment and custom fields in the dashboard, so your team can read a Tamil call's outcome without listening to it.
Choosing the right language for each caller
In most cities the choice is obvious, but metros are mixed. A Bengaluru real-estate lead may prefer Kannada, English, Hindi, Tamil or Telugu depending on who they are. Three practical rules help. First, if your form can ask “preferred language”, use it — it costs one dropdown and removes the guesswork. Second, default to the regional language outside metros and to English or Hindi inside them, then check the transcripts for callers who struggled. Third, write the script natively in each language rather than translating the English one, because word-for-word translations sound stiff and miss the honorifics callers expect.
Mumbai is a good example: Marathi suits many callers in Thane, Kalyan and older neighbourhoods, while Hindi or English often works better for buyers in Andheri or Powai. Running a Marathi and a Hindi campaign in parallel and comparing results for a fortnight is an inexpensive way to find out.
Cost is the same in every language
Outpero does not charge extra for regional languages. Talk time is ₹5 per minute on Standard and ₹6.8 on Premium, whose curated native-speaker voices suit calls where accent and warmth matter most. There is no setup fee, no monthly base fee, and 50 free credits at signup to test each language you need.
How to evaluate a multilingual AI voice agent
- —Ask a native speaker on your team to take the test call, not just someone who knows the language a little.
- —Answer the way your customers do — mixed, fast, with English product words, numbers and dates.
- —Check how it says your brand name, prices in lakh or crore, and local place names.
- —Read the transcript afterwards: if the transcript is wrong, the agent misunderstood.
- —Ask the vendor for its list of languages that are not live, not just the ones that are.
Compliance does not change with language
Calls in every language follow the same TRAI TCCCP 2018 rules on DND preferences and the DPDP Act 2023 on personal data. Outpero calls from a DLT-registered line and screens DND numbers on bulk campaigns. If your script includes a disclosure that the caller is speaking with an AI assistant, write it naturally in each language rather than translating it word for word.