LLM Customization
Adapt a foundation model to your domain — prompt design, RAG, LoRA, full fine-tune. We pick the technique your eval says works, not the one in the headlines.
Foundation models like GPT-4, Claude, Llama, and Mistral provide remarkable general capabilities, but most business applications require more than general-purpose performance. Your domain has specific terminology, quality standards, output formats, and compliance requirements that a base model does not address. LLM customization bridges this gap, adapting powerful general models to perform reliably within your specific context.
Customization spans a spectrum of techniques. Prompt engineering and few-shot learning can produce significant improvements with no model modification at all. Retrieval-augmented generation grounds the model in your data. Fine-tuning adjusts model weights using your examples to internalize domain patterns. In some cases, continued pre-training on domain-specific corpora is warranted. We help you determine which approach, or combination of approaches, delivers the best results for your requirements and budget.
We are model-agnostic and help you navigate the tradeoffs between proprietary APIs and open-source models, between cloud-hosted inference and on-premises deployment, and between cost, latency, and output quality. Every recommendation is grounded in empirical evaluation against your specific use cases, not theoretical benchmarks.
What LLM Customization covers.
Prompt Engineering & Optimization
Systematic development and testing of prompts, system instructions, and few-shot examples that maximize model performance without requiring fine-tuning.
Fine-Tuning & Adaptation
Supervised fine-tuning of open-source and proprietary models using your curated datasets, with techniques including LoRA, QLoRA, and full parameter tuning.
Domain-Specific Training Data
Curation, augmentation, and quality assurance of training datasets that capture your domain terminology, decision patterns, and quality expectations.
Model Evaluation & Benchmarking
Rigorous evaluation frameworks that measure model performance across accuracy, consistency, safety, and task-specific metrics relevant to your application.
Model Deployment & Serving
Optimized inference infrastructure including quantization, batching, and caching strategies that balance response quality with latency and cost requirements.
Guardrails & Output Control
Safety layers, output validators, and content filtering that ensure model outputs comply with your brand guidelines, regulatory requirements, and quality standards.
Use cases we have shipped.
Fine-tuning a language model to generate medical reports using your organization's clinical terminology and formatting standards
Customizing an LLM to produce code that follows your internal engineering standards, architectural patterns, and documentation requirements
Adapting a model for legal document analysis that understands jurisdiction-specific terminology and citation formats
Building a domain-specific language model for financial analysis that handles your proprietary metrics and reporting conventions
Training a model to classify and route customer inquiries using your product taxonomy and support escalation criteria
How we run the engagement.
Requirements & Baseline Evaluation
We define your performance requirements, evaluate baseline model capabilities against your use cases, and determine the most efficient customization approach.
Data Preparation & Curation
Our team prepares training and evaluation datasets from your domain content, ensuring quality, diversity, and alignment with the target behavior.
Customization & Training
We execute the customization process, whether prompt engineering, fine-tuning, or a hybrid approach, with systematic experimentation and validation at each step.
Evaluation & Deployment
Comprehensive evaluation against held-out test data and real-world scenarios, followed by production deployment with optimized serving infrastructure.
Monitoring & Maintenance
Ongoing performance monitoring, periodic re-evaluation against evolving requirements, and model updates as your domain knowledge and standards change.
Common questions.
What is the difference between prompt engineering and fine-tuning?+
Do we need our own training data for LLM customization?+
Which LLMs can you customize?+
How do you ensure quality and safety of LLM outputs?+
How do you deploy and serve customized LLMs?+
Pick the date. We’ll scope the build.
Tell us the constraint, the deadline, and the system. One business day to a scoped plan.