All resources
Conversation design 6 min read

Tenglish: why most Telugu AI fails on real calls

Callers mix Telugu and English in one sentence. Here is why single-language voice systems stumble on that mix and how to test for it.

Illustration for "Tenglish: why most Telugu AI fails on real calls"
Key takeaways
  • Tenglish, the mix of Telugu and English, is how many Telugu speakers talk on a business call.
  • Most voice systems are built around one language per turn.
  • The words most likely to be spoken in English are the ones that matter most: amounts, times, product names.
  • Do not read a clean Telugu script.
  • The agent answers in the caller's mix without asking them to choose, repeats critical details back, recovers gracefully from a misheard word and keeps the transcript in both languages as spoken.
01

Tenglish is the normal case

Tenglish, the mix of Telugu and English, is how many Telugu speakers talk on a business call. The rate, the appointment, the OTP and the delivery are said in English, and the rest stays Telugu. It is not an error to be fixed, and any system that treats it as one will struggle.

02

Where the failure happens

Most voice systems are built around one language per turn. When an English word lands inside a Telugu sentence, the recogniser either garbles the word or loses the sentence around it. The agent then answers the wrong question, or asks the caller to repeat.

ListenHears the caller in their own words
UnderstandWorks out what they want
ReplyAnswers in a natural voice
ActBooks, notes or hands over
Listen, understand, reply, act. The same four steps on every turn of the call.
03

Why it hurts more on numbers and names

The words most likely to be spoken in English are the ones that matter most: amounts, times, product names. Getting them wrong causes wrong bookings and wrong quotes, not just awkwardness. That is why confirmation of these details matters.

04

How to test for it

Do not read a clean Telugu script. Say a price and a time in English inside a Telugu sentence. Switch to English for a whole turn and back. Interrupt halfway. Then check the transcript and whether the agent confirmed the details you cared about.

05

What a good result looks like

The agent answers in the caller's mix without asking them to choose, repeats critical details back, recovers gracefully from a misheard word and keeps the transcript in both languages as spoken.

Written by the EnableCalls team

We build AI calling employees that answer, call and follow up in Hindi, Telugu and English. These notes come from designing and testing real call flows.

About EnableCalls
COMMON QUESTIONS

Questions this note answers.

Short answers you can reuse when you plan a similar call flow.

01Is Tenglish only used by young people?

It is strongest among younger and urban speakers, but code-mixing is common across age groups on business calls.

02Should the agent reply in Tenglish too?

It should follow the caller, using English for terms the caller used in English.

03Does the transcript keep both languages?

It should, as spoken, so the record is accurate.

READY WHEN YOU ARE

Turn the idea into a working call flow.

Bring one call your team handles every day. We'll show you how an AI employee would do it.

Book a demo Test it before it goes live Pay only for connected calls