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LLM BUILDING & FINE-TUNING

Select, adapt, evaluate, and ship language models that fit your latency, cost, and compliance envelope.

AI Agentic Practice

LLM Building & Fine-Tuning

Gensten helps enterprises build LLM capability the right way: model selection, prompt and tool schemas, supervised fine-tuning / preference optimization where needed, evaluation gates, secure hosting (Azure AI Foundry or private), and continuous improvement inside ADLC. We focus on measurable task performance - not model hype.

  • Foundation vs. SLM selection frameworks
  • SFT / LoRA / preference tuning when RAG alone is not enough
  • Task evals: accuracy, toxicity, latency, $ per 1k tokens
  • Secure hosting on Foundry or VPC
  • Tool-calling schemas for agentic workflows
LLM Building & Fine-Tuning

A pragmatic LLM build path

Most ROI comes from retrieval quality, tool design, and evaluation - not training from scratch. We start with strong foundation models, add RAG and tools, then fine-tune only when data and KPIs justify it.

  • Baseline with off-the-shelf models + RAG
  • Instrument failures with OpenTelemetry and eval sets
  • Fine-tune on curated enterprise examples
  • Distill to smaller models for cost at scale

Safety and compliance

Content filters, PII redaction, regional data residency, and audit logs are part of the build - especially for BFSI and healthcare agents.

Use Cases

  • Domain copilots with brand voice
  • Structured extraction and classification models
  • Code / SQL generation assistants
  • On-prem or VPC LLM for regulated data

Technologies & Platforms

Azure AI FoundryOpenAI / Azure OpenAIHugging FaceLoRA / PEFTvLLM / TritonMLflow / Foundry catalogs

Frequently Asked Questions

Do we need our own trained LLM?

Rarely from scratch. Most enterprises succeed with hosted frontier models + RAG + tools, then targeted fine-tuning. We help you decide with a cost/quality decision matrix.

What is LLM building in an enterprise context?

Selecting models, designing prompts and tool schemas, evaluating quality/cost/latency, optionally fine-tuning, and hosting securely - all inside an ADLC release process.

When is fine-tuning worth it?

When RAG and prompting plateau on style, domain jargon, structured outputs, or specialized classification. We require enough curated examples and clear eval gains before training.

What is LoRA / PEFT fine-tuning?

Parameter-efficient methods that adapt a base model with smaller trainable adapters - faster and cheaper than full fine-tuning while preserving most base capabilities.

Should we use small language models (SLMs)?

Often yes for high-volume, narrow tasks. We compare frontier models vs. SLMs on your eval set for cost, latency, and accuracy, and may distill after a strong teacher model is proven.

How do you evaluate LLMs before production?

Task accuracy, groundedness (with RAG), toxicity/safety, latency percentiles, and cost per successful task - tracked in Test & Release gates and again in production Monitor.

Can you host private or VPC LLMs?

Yes. Options include Azure AI Foundry/Azure OpenAI with network isolation, or self-hosted stacks (vLLM/Triton) in your VPC for stricter data residency needs.

How do LLMs support tool calling for agents?

We define strict JSON/tool schemas, validate arguments, apply policy checks, and log every call so agents can act in enterprise systems without unconstrained free-form actions.

How do you control LLM cost at scale?

Routing (cheap model first), caching, shorter contexts via better RAG, SLM distillation, rate limits, and budget alerts tied to OpenTelemetry cost attributes.

Does Gensten help with prompt engineering only?

Prompting is one layer. We deliver the full stack: retrieval, tools, evals, hosting, and ADLC operations so prompts stay effective as data and workflows change.

Ready to build production AI agents?

Talk to Gensten about ADLC, RAG, LLM building, Foundry IQ, Fabric IQ, and OneLake - scoped to your KPIs and compliance needs.