LLM Training Data Services

LLM training data for aligned, tuned and evaluated language models.

  • Build custom datasets for domain-specific models
  • Integrate RLHF signals for human-aligned outputs
  • Automate annotation with human-in-the-loop checks
  • Deploy bias-checked, training-ready data at speed
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End-to-End LLM Data Services for High-Performance Language Models

AI teams building LLM training dataset pipelines internally often struggle to maintain consistency, QA and reviewer agreement at scale. Hitech BPO’s LLM Training Data Services solve this by delivering domain-aligned, structured datasets for instruction tuning, human preference alignment, red teaming, and retrieval augmentation. We help you meet evaluation benchmarks and safety thresholds while reducing annotation bottlenecks.

We deliver ready-to-ingest training data for large language models, including instruction–response examples, preference-ranked completions, red teaming prompts, multilingual corpora, and benchmarking test sets. Our LLM data services span the full stack of LLM dataset creation, LLM data annotation, LLM data curation, and LLM data preparation—structured to your format and task.

Each dataset is validated with multi-stage QA: reviewer calibration, error audits, labeling guides, format checks, and metadata tagging. When you hire us, you gain structured LLM data sourcing, annotation, and delivery pipelines that reduce rework, improve alignment, and speed up deployment of reliable models.

99.9 %

Data Accuracy

500 +

Terabytes of Curated Data

100 +

Supported Languages

80 %

Reduction in Data Bias

1 Billion+

Annotated Samples

30 %

Cost Savings

Outsource your LLM training data needs to a trusted partner »
LLM Fine Tuning

LLM Fine Tuning

We offer fine-tuning services to customize base large language models (LLMs) using task-specific, domain-relevant, and instruction-aligned datasets. Whether you’re targeting customer support, legal research, or technical writing, our LLM fine-tuning data workflows help you build high-performing models aligned with real-world applications. Our services ensure controlled outputs, improved prompt understanding, and optimized generalization.

  • Instruction and conversational tuning
  • Domain adaptation for specialized use cases
  • Few-shot and zero-shot generalization
  • LoRA, PEFT, and full fine-tuning implementations
  • Integration with open-source and commercial models
  • Optimization for latency, cost and accuracy
Preference Data Collection (RLHF – Reinforcement Learning from Human Feedback)

Preference Data Collection (RLHF – Reinforcement Learning from Human Feedback)

We design RLHF pipelines that combine human judgment with reward modeling to align LLM outputs with ethical, safe and useful behavior. By structuring preference data using pairwise ranking, scoring or comparative evaluations, we enable models to learn nuanced human preferences—critical for instruction-following agents, chatbots, and assistants.

  • Prompt/output pair collection
  • Response ranking and scoring
  • Reinforcement learning reward model training
  • Review interfaces for expert annotators
  • Feedback loop integration for continual learning
  • Use-case specific customization (e.g., healthcare, finance)
Domain-Specific Corpus Curation & Cleaning

Domain-Specific Corpus Curation & Cleaning

We provide high-quality LLM data curation services by sourcing, filtering and normalizing text corpora from trusted, domain-relevant sources. Our curated datasets enable improved accuracy and contextual understanding across specialized domains. Each dataset undergoes rigorous LLM data preparation steps to ensure clean, balanced and structured inputs for training.

  • Sourcing from public and proprietary datasets
  • Language, topic and format-based filtering
  • Removal of duplicates and boiler plate content
  • Metadata tagging for easier traceability
  • Cleaning of misspellings, noise, and malformed tokens
  • Multilingual and regional corpus curation
LLM Data Annotation

LLM Data Annotation

We annotate large-scale text data for LLMs to support supervised learning, evaluation, and prompt-response generation. Our annotations span multiple NLP tasks—providing structured training data that enhances the quality of large language model training data for high-stakes domains such as healthcare, legal or education.

  • Named entity recognition (NER)
  • Intent and sentiment classification
  • Summarization and paraphrasing tasks
  • Contextual labeling for RAG pipelines
  • Dialogue flow annotation and turn classification
  • Multi-intent tagging and multi-label annotation
LLM Benchmarking & Evaluation

LLM Benchmarking & Evaluation

We offer custom LLM benchmarking to measure model performance across linguistic tasks, reasoning ability, coherence and safety. Our evaluations help you compare multiple models or assess the effectiveness of fine-tuning across domains and audiences.

  • Task-specific benchmark development (QA, summarization, etc.)
  • Human and automated evaluation scoring
  • Factuality, hallucination, and coherence checks
  • Toxicity, bias, and fairness assessments
  • Fine-tuning impact analysis
  • Multilingual and multi-domain evaluation sets
Data Formatting for LLM Fine-Tuning Frameworks

Data Formatting for LLM Fine-Tuning Frameworks

We prepare and transform datasets into formats required by common LLM training frameworks. This includes prompt engineering, tokenization and consistent structure across datasets. Our services reduce your pre-processing time and improve integration with LLM training pipelines.

  • Formatting for JSONL, TFRecord, CSV
  • Instruction-prompt-output structuring
  • Embedding-friendly data chunks
  • Role-based conversation formatting (user/assistant)
  • Few-shot template formatting for training
  • Integration-ready files for Hugging Face, DeepSpeed, and more
LLM Red Teaming & Model Safety

LLM Red Teaming & Model Safety

Our red teaming services simulate adversarial scenarios to test LLM safety and robustness. We expose models to edge cases, malicious prompts and sensitive queries to detect vulnerabilities. This supports safe model deployment and regulatory compliance.

  • Jailbreak and prompt injection testing
  • Toxicity and bias probing
  • Sensitive content generation detection
  • Safety scorecard generation and analysis
  • Mitigation recommendations
  • Stress testing across domains and languages
Retrieval-Augmented Generation (RAG)

Retrieval-Augmented Generation (RAG)

We support end-to-end RAG pipeline development by curating, indexing and formatting retrieval corpora. This improves factual accuracy, reduces hallucinations and enhances context relevance in generative outputs. Our LLM data sourcing approach ensures high-quality retrieval content across use cases.

  • Knowledge base creation and structuring
  • Embedding model integration (e.g., FAISS, Pinecone)
  • Document chunking for efficient retrieval
  • Passage scoring and ranking
  • Multilingual RAG datasets
  • RAG-ready prompt formatting and evaluation
Benefits

Benefits of Outsourcing LLM Data Services

End-to-End Coverage, Minimal Overhead

End-to-End Coverage, Minimal Overhead

We manage sourcing, formatting, annotation, scoring and QA—reducing in-house load while improving consistency.

Targeted Outputs for Critical Tasks

Targeted Outputs for Critical Tasks

Every dataset is use-case aligned, from RAG and instruction tuning to red teaming, grounded in real-world LLM data quality standards.

Flexible Integration and Tracking

Flexible Integration and Tracking

Datasets support version control and reproducibility and plug directly into your LLM data pipeline—no refactoring needed.

Structured Delivery for Competitive Teams

Structured Delivery for Competitive Teams

We provide technical teams with traceable, audit-friendly Training Data for Large Language Models that shortens dev cycles and lower QA friction.

Want faster, smarter model training?

Get domain-specific datasets, formatted and ready to deploy.

Frequently Asked Questions

 

What types of data do you provide for LLM training?

Hitech BPO provides a diverse range of LLM training datasets, including domain-specific corpora, annotated text, multilingual content, and LLM synthetic data. Our datasets support both pretraining and fine-tuning for general-purpose and specialized language models.

How do you ensure the quality of your LLM training data?

We follow robust LLM data quality processes such as deduplication, normalization, noise reduction, and expert validation to ensure your LLM data pipeline delivers accurate, balanced, and application-ready data.

Can you create custom datasets for specific LLM applications?

Yes, Hitech BPO excels at LLM dataset creation for specialized applications in sectors like healthcare, legal, FinTech, and more. These custom datasets are curated and formatted to align with your model’s objective and architecture.

Do you provide data annotation services for LLM training?

Absolutely. Our LLM data annotation services include tasks like NER, sentiment analysis, summarization, classification and intent tagging—enhancing your language model training data with the structured supervision it needs for accuracy.

What is the role of synthetic data in LLM training?

LLM synthetic data helps overcome limitations like privacy constraints, data scarcity, and imbalance. Hitech BPO uses synthetic text generation to scale training datasets while preserving data diversity and minimizing risks.

How can your services help with LLM fine-tuning?

Hitech BPO supports LLM fine-tuning by delivering instruction-formatted, domain-specific datasets, and formatting them for compatibility with your preferred fine-tuning frameworks. This boosts model adaptability, coherence and task-specific performance.

What are the benefits of using your LLM data and services?

By partnering with Hitech BPO, you gain access to specialized LLM data services, expert teams, scalable workflows, faster delivery, and lower operational costs—without compromising on quality, compliance, or customization.

Do you support multilingual and low-resource languages?

Yes. Hitech BPO curates and annotates text data for LLMs in major global and low-resource languages, helping clients develop inclusive AI models for multilingual use cases and underserved markets.

Do you offer synthetic data generation for LLMs?

Yes, Hitech BPO provides synthetic data generation services using programmatic, rule-based, and generative techniques to augment training sets and cover rare linguistic or conversational scenarios.

What’s the difference between LLM pretraining and fine-tuning data?

Pretraining involves general-purpose, large-scale datasets that teach the model language fundamentals. In contrast, fine-tuning data is specific, structured, and task-aligned—used to adapt the model to real-world applications. Hitech BPO supports both stages.

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Business Data Challenges

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Our experts will review and get back to you within one business day with free consultation for successful implementation.

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Disclaimer:  

HitechDigital Solutions LLP and Hitech BPO will never ask for money or commission to offer jobs or projects. In the event you are contacted by any person with job offer in our companies, please reach out to us at info@hitechbpo.com

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