Language coverage
Tell us the languages your system needs.
NaraDatum can scope requirements across major Indic languages, Indian English, regional speech, multilingual combinations and other buyer-defined languages or variants where suitable sourcing or buyer-funded collection is feasible.
How availability works
We do not treat language support as an inventory claim. For each requirement, we establish whether suitable data already exists, whether it can be sourced and licensed, or whether buyer-funded collection is the appropriate route.
What a status means in a NaraDatum response
When NaraDatum answers a requirement, each language or speech pattern in the brief is given one of these four statuses. The languages listed on this page carry no status: they are capability coverage until a requirement is reviewed.
- Reviewed supply available
- A specific dataset has cleared review across provenance, rights, consent, metadata, quality control and intended-use fit, with the evidence class for each stated, and is available now.
- Capability coverage
- A language or speech pattern NaraDatum can assess for sourcing or funded collection. Not a statement that a dataset is on hand today.
- May be sourced
- Data may exist outside what NaraDatum has reviewed. We would locate and review it against your brief.
- Custom collection capability
- Can be collected to your brief once the requirement is funded, when existing data cannot meet it.
Capability coverage
Illustrative language and speech coverage
Examples include Hindi, Bengali, Marathi, Telugu, Tamil, Gujarati, Urdu, Kannada, Odia, Malayalam, Punjabi and Assamese, alongside Indian English, regional variants and code-switched combinations. This list is illustrative, not exhaustive. Other languages or combinations can be scoped against the buyer requirement.
- Hindi
- Bengali
- Marathi
- Telugu
- Tamil
- Gujarati
- Urdu
- Kannada
- Odia
- Malayalam
- Punjabi
- Assamese
- Indian English
- Regional variants
Language requirement patterns
These sections describe requirement patterns NaraDatum can assess. They are not a priority ranking or confirmed inventory.
Examples are illustrative, not exhaustive. Capability coverage is not confirmed inventory.
- Major Indic-language speech
- A requirement can specify a major Indic language together with speaker structure, region, channel, environment, scenario and transcript or annotation needs. Feasibility and availability are established against the buyer brief.
- Indian English and regional accent requirements
- Indian English is scoped by the accents, regions, speech settings and use cases the buyer needs. It is not treated as one uniform accent or as a single inventory category.
- Code-switched / multilingual speech
- A brief can define the languages or variants involved, the expected switching context and any segment-level or utterance-level language labelling required.
- Regional and lower-resource variants
- Requirements for regional or lower-resource variants are assessed against sourcing feasibility, speaker eligibility, evidence, volume and the collection route where existing supply does not fit.
- Buyer-defined language combinations
- Buyers can specify a language, variant or multilingual combination that is not named on this page. NaraDatum then checks suitable supply and sourcing or funded-collection feasibility against that requirement.
Capability and sourcing coverage
Code-switched and multilingual combinations
Examples include Hindi-English, Tamil-English, Telugu-English, Punjabi-Hindi, Hindi-Marwari and buyer-defined combinations. Availability and fit are established against the requirement.
- Hindi-English
- Hindi-Marwadi
- Tamil-English
- Telugu-English
- Punjabi-Hindi
How availability is confirmed
This is capability coverage, not confirmed inventory. Exact availability is established against the brief.
NaraDatum does not publish an open catalogue. Availability is confirmed against each requirement after rights, provenance, quality and commercial availability are reviewed.
Where a dataset clears review across provenance, rights, consent, metadata, quality control and intended-use fit, with the evidence class for each stated, and is genuinely available, it can be shared privately with a Dataset Passport and controlled sample access.
See how a Dataset Passport works →
If your organisation holds data in one of these languages, or in a language not listed here, see how supplying works. The organisation is reviewed first, and each dataset is reviewed separately.
Why language design matters
India is not a single-language market.
Real conversations often shift between languages within a single utterance, not just across turns. Users interrupt, correct themselves, reply briefly, speak in noisy environments, and mix language and register depending on context and speaker. A model or evaluation set built on clean single-language speech can miss these patterns entirely.
Language choice in a voice dataset is a design decision. It should reflect how the target user actually speaks, including accent variation, informal phrasing, regional vocabulary, and natural conversational behaviour, not what is easiest to collect.
Request language coverage.
Tell us the languages, use case and volume. We will check suitable existing supply first, source privately where needed, and only scope buyer-funded collection when existing data cannot meet the requirement.