Pricing · Indian English
Indian English speech data: what it costs
Per-hour cost bands for Indian English speech data collection, why 5 dialect varieties change the number, and worked budgets at three common volumes.
- Language
- Indian English (en-IN)
- Rate band
- ₹3,200 – ₹6,500 / hour
- Speakers
- 130M
- Studio cities
- 7
Why Indian English prices the way it does
Indian English has roughly 130 million speakers concentrated in Pan-India, with distinct regional accent bands, which sets how quickly a cohort can be recruited. Recruitment speed, not recording time, is the dominant cost in almost every programme.
Balance by substrate language, not by city alone, and tag each speaker so accent-band evaluation is possible after delivery.
- Indian English embeds Hindi and regional discourse markers, kinship terms, and food and place vocabulary that Western English lexicons lack.
- Commercial English ASR is trained overwhelmingly on US and UK speech. Indian English accent data with substrate-language tagging is the fastest way to close the accuracy gap for Indian deployments.
Worked budgets
| Volume | Typical speakers | Indicative range | Timeline |
|---|---|---|---|
| 100 hours | 200 at 30 min | ₹3,20,000 – ₹6,50,000 | 3-6 weeks |
| 500 hours | 1,000 at 30 min | ₹14,72,000 – ₹29,90,000 | 6-10 weeks |
| 1,000 hours | 2,000 at 30 min | ₹27,20,000 – ₹55,25,000 | 10-16 weeks |
Unit rates fall with volume because setup, script design and recruiter onboarding are amortised, not because quality is relaxed.
Cost drivers specific to this language
- Dialect spread: covering North Indian (Hindi-substrate), Maharashtrian, South Indian (Tamil/Telugu/Kannada/Malayalam substrate), Bengali-substrate rather than one prestige variety adds recruitment cost but is what makes the corpus usable in production
- Script and transcription: Latin transcription needs native reviewers, and Indian-specific vocabulary flagged as errors by spellcheck-driven QA is the usual source of rework
- Phonetics: Retroflex realisation of /t/ and /d/, which requires reviewers trained on the language rather than generic annotators
Add-ons and their pricing
| Layer | Unit | Indicative |
|---|---|---|
| Verbatim transcription | per audio hour | ₹900 – ₹2,400 |
| Speaker diarisation and turn labels | per audio hour | ₹600 – ₹1,500 |
| Event and noise tagging | per audio hour | ₹400 – ₹1,100 |
| Romanised parallel transcript | per audio hour | ₹500 – ₹1,200 |
| Speaker-disjoint train/dev/test splits | one-off | Included |
How to get the number down without hurting the model
- Widen the age bands before you widen the dialect spread — dialect coverage is what determines production accuracy
- Use quiet-room capture where deployment audio is not studio-clean anyway
- Order transcription in a second phase once the audio passes acceptance
- Run a 10-20 hour pilot; specification errors caught there are the cheapest ones you will ever fix
Frequently asked
What is the per-hour rate for Indian English speech data?
Indicatively ₹3,200 to ₹6,500 per delivered hour for standard scripted or spontaneous capture with verbatim transcription. Narrow cohorts and studio-only capture sit at the top of that band.
Is Indian English more expensive than Hindi?
No — it sits in the same tier as Hindi, because the recruitment pool is deep enough to fill cohorts quickly in multiple cities.
Do you quote in INR or USD?
Either. Bands here are in INR; international clients are usually invoiced in USD at a fixed contract rate.
What is included in the quoted rate?
Recruitment, consent capture, recording, QA, transcription if ordered, metadata, delivery packaging and a perpetual licence with full IP transfer.
Related pages
Price a Indian English dataset
Tell us hours, speakers and dialect spread for Indian English and you get a fixed price against it.