Pricing
AI Voice Evaluation: cost and pricing in India
Indicative rate bands for ai voice evaluation, the five specification decisions that move the number most, and how a fixed quote is put together from a written spec.
- Pricing model
- Per delivered unit, fixed against spec
- Minimum
- ~50 hours or equivalent per language
- Turnaround
- 1-3 weeks per evaluation round.
- Quote time
- One working day
What drives the price of voice evaluation
Human evaluation of your speech models: MOS and preference testing for TTS, WER-in-context review for ASR, and native-speaker judgement on naturalness and intelligibility.
- Language tier: widely spoken languages have deeper recruitment pools and cost less per unit than low-resource ones
- Demographic narrowness: a 50/50 gender split across three age bands is routine; a narrow cohort multiplies recruitment effort
- TTS — MOS (1-5), MUSHRA, and A/B preference protocols. Moving this off the standard changes the unit cost directly.
- ASR — Error typing: substitution, deletion, insertion, code-switch failure. Moving this off the standard changes the unit cost directly.
- Panel — Native speakers of the target variety, screened and calibrated. Moving this off the standard changes the unit cost directly.
- Sample size — Powered per the effect size you need to detect. Moving this off the standard changes the unit cost directly.
- QA threshold and rework policy: a higher accept bar means more re-collection, which is priced in rather than absorbed later
Where the cost sits in voice evaluation
Raters are excluded if they contributed to the training data for the model under test.
Turnaround: 1-3 weeks per evaluation round.
Indicative rate bands
| Scope | Unit | Indicative band |
|---|---|---|
| Widely spoken language, standard spec | per delivered hour | ₹3,200 – ₹6,500 |
| Regional language, standard spec | per delivered hour | ₹4,200 – ₹8,200 |
| Low-resource language or narrow cohort | per delivered hour | ₹5,500 – ₹11,000 |
| Verbatim transcription add-on | per audio hour | ₹900 – ₹2,400 |
| Pilot batch (10-20 hours) | fixed | Quoted separately, credited against the full run |
These are bands, not a price list. Two projects with the same hour count can differ by 3x on cohort design alone, which is why every number here is replaced by a fixed figure once we see your specification.
What the price includes
- Raw per-rater scores
- Aggregated results with confidence intervals
- Error-type analysis
- Recommended fix priorities
How the quote is built
- Protocol design and sample-size calculation
- Panel recruitment and calibration on reference items
- Blind evaluation with attention checks
- Statistical analysis
- Report with per-error-type breakdown
Where budgets get wasted
The most expensive mistake in a data purchase is buying volume before the specification is settled. Re-collecting 200 hours because the noise profile did not match deployment costs more than the entire QA layer would have.
Attention checks and reference anchors are embedded so unreliable raters are detected and excluded before analysis.
Best suited for
- TTS QA
- ASR benchmarking
- Model release gating
Frequently asked
How much does voice evaluation cost per hour in India?
Most programmes land between ₹3,200 and ₹11,000 per delivered unit depending on language tier, cohort narrowness, recording condition and annotation depth. A written specification converts that band into a single fixed number.
Is there a minimum order?
Around 50 hours or equivalent per language for a production run. Pilots of 10-20 hours are accepted when they lead into a larger build, since most setup cost sits in specification and recruitment.
Do you charge for rejected audio?
No. You pay for delivered units that pass the agreed QA threshold. Rejected material is re-collected at our cost.
Can the price be fixed rather than estimated?
Yes. Once the specification is signed the price is fixed against it. Changes to quotas, conditions or annotation depth are re-quoted before work continues.
Related pages
Get a fixed price for voice evaluation
Send the volume, languages and quality bar you have in mind and you get a scoped price within a working day.