Language is not a barrier. It's our advantage.
30+ languages. Native speaker networks. Dialect-level precision. Full-spectrum multilingual AI data infrastructure for the world's most demanding models.
Building a language model that works in one language is hard. Building one that works across dozens — with the right accent, dialect, domain vocabulary, and cultural nuance — is a different challenge entirely. Nextura.ai exists to solve that challenge.
We operate the most comprehensive multilingual AI data infrastructure available to enterprise AI teams, covering 30+ global languages, 20+ Indian languages, and specialized capabilities in every major global language — backed by native speakers, certified linguists, and domain-trained annotators.
Nextura.ai builds multilingual annotation pipelines that are native-first, domain-aware, and dialect-sensitive — because the difference between a good model and a great one is the depth of understanding embedded in every single label.
Why native-first annotation matters.
- Native speakers are recruited for every featured language — not translation workarounds
- Domain-trained annotators for specialized fields: medical, legal, financial, conversational
- Dialect and script variant coverage: from Latin script romanization to native scripts
- Code-switching support: annotating mixed-language text (e.g., Hinglish, Spanglish, Franglais)
- Cultural context annotation: idioms, humor, implied meaning, cultural references
- Regional QA teams who review output within the language, not through translation
Every annotation format. Every language.
Text Annotation
- Named Entity Recognition (NER)
- Intent & slot labeling
- Sentiment & opinion mining
- Topic classification
- Question-answer pair generation
- LLM preference ranking (RLHF)
- Language identification
- Transliteration annotation
Speech Annotation
- ASR transcription (verbatim & clean)
- Speaker diarization & identification
- Emotion & tone tagging
- Accent classification and scoring
- ITN (Inverse Text Normalization)
- TTS dataset preparation
- Phoneme-level annotation
- Background noise & event labeling
World-class coverage in every major language.
| Language | Services Available | Specialization | Major Use Cases |
|---|---|---|---|
| French | Transcription, NER, ITN, TTS datasets | European & Canadian French variants | LLM fine-tuning, ASR training, localization |
| German | ASR annotation, sentiment, NLP labeling | Formal/informal register, Austrian, Swiss dialects | Enterprise chatbots, document intelligence |
| Mandarin (Chinese) | Speech transcription, NER, dialog annotation | Simplified & Traditional, Cantonese support | Conversational AI, voice assistants, search NLP |
| Spanish | Multi-dialect transcription, sentiment, ITN | Castilian, LATAM (10+ regional variants) | IVR training, chatbot NLU, news summarization |
| Japanese | Morphological annotation, NER, speech labeling | Keigo (formal) and informal registers | E-commerce NLP, fintech AI, voice tech |
| Korean | Speech, NER, sentiment, morphological tagging | Standard and regional Seoul/Busan variants | Gaming, fintech, social media AI |
| Portuguese | Transcription, entity extraction, ITN | European and Brazilian variants | LLM training, customer support AI |
| Dutch | Speech annotation, NLP, ITN | Standard Dutch and Flemish variants | Enterprise AI, conversational agents |
| Arabic and others | MSA & dialectal Arabic, speech, NER | Gulf, Levantine, Egyptian, Maghrebi dialects | News AI, government NLP, fintech |
| English | All annotation types, RLHF, LLM alignment | US, UK, Australian, Indian, African variants | Full LLM pipeline, trust & safety, RAG systems |
India's linguistic diversity as AI infrastructure.
India is home to 22 constitutionally recognized languages and hundreds of dialects — representing one of the world's most complex linguistic ecosystems. Nextura.ai has built deep capabilities across all major Indian languages, making us the preferred partner for models serving Indian and South Asian markets.
Indo-Aryan Languages
- Hindi
- Bengali
- Gujarati
- Marathi
- Punjabi
- Odia
- Urdu
- Sindhi
- Assamese
Dravidian Languages
- Tamil
- Telugu
- Kannada
- Malayalam
Annotation Services
- ASR transcription
- TTS dataset creation
- ITN (Inverse Text Normalization)
- NER & intent labeling
- Code-switching annotation
- Dialect & script variants
- Transliteration datasets
20+ more languages available.
Beyond the featured languages above, Nextura.ai also provides data services across additional global languages — and we expand coverage based on customer demand.