Benefits you get with a custom LLM


OD2 7603 scaled

Efficiency

Generic models answer generic questions. A custom LLM trained on your internal data handles domain-specific queries faster and with higher accuracy — without hallucinating terminology your team actually uses. Unlike API-based models that bill per token, your own model runs on predictable infrastructure costs.

Domain knowledge

When your model has been trained on your product documentation, support history, or regulatory filings, it understands the context that GPT-4 simply won’t. That means fewer corrections, fewer manual reviews, and outputs that actually fit your processes.

Security

Your training data stays in your environment. No third-party model sees your proprietary content, and there’s no risk of it appearing in someone else’s outputs. For regulated industries (FinTech, healthcare, legal) this isn’t optional, it’s required.

Why do you need a large language model?


Your domain has specialized vocabulary that generic models consistently misunderstand.

You’re working with sensitive internal data that can’t leave your environment.

You need reproducible, auditable outputs, not responses that shift with model updates.

You’re running at scale, where per-token API costs become unsustainable.

Your product roadmap requires model ownership and long-term iteration control.

Public APIs simply won’t process your content — and this one is underappreciated.

LLM development services we provide


LLM consulting and use case strategy

Not sure whether you need a custom model, fine-tuning, or just a well-structured RAG pipeline? We start with consulting services. We map your data landscape, identify viable use cases, define success criteria, and give you an honest assessment of what architecture will get you there — and what it’ll cost to maintain.

Custom LLM development (built from data)

Our LLM developers collect and clean domain-relevant datasets, design the model architecture, run training and evaluation cycles, and iterate until the AI model hits your target metrics. Suitable for companies with proprietary data assets and specific performance requirements that public models can’t satisfy.

RAG implementation

When your primary need is accurate, up-to-date answers from a large document corpus, RAG is often more practical than full fine-tuning. We design and build the retrieval pipelines, chunking strategies, and embedding infrastructure that make your model actually useful in production.

LLM fine-tuning

We apply fine-tuning techniques, including LoRA and QLoRA, to adapt pre-trained models to your domain without retraining from scratch.

LLM integration into existing products

We integrate LLM capabilities into your current platform via AWS Bedrock, Azure OpenAI, Google Vertex AI, or Anthropic APIs. This includes secure API configuration, context management, token optimization, and connecting model outputs to your existing data flows.

Support and maintenance services for your AI and LLM systems

We design the full prompt architecture: input structure, response format, guardrails, and the evaluation workflows that tell you when something’s drifting. Your team gets outputs that are consistent enough to test, refine, and rely on in production.

LLM maintenance & post-release support

Let our experts ensure the reliability, security, and effectiveness of your LLM or LLM-based systems. Count on us for bug fixes, model updates, performance monitoring and optimization, data management, and more.

LLM-powered use cases across industries


Fintech

  • Document processing, contract analysis, regulatory compliance monitoring
  • Fraud detection and transaction narrative classification
  • Internal knowledge assistants for compliance teams and analysts
  • Customer-facing chatbots with KYC context and secure authentication

What clients get: faster review cycles, lower manual processing costs, compliance confidence in regulated environments

Edtech

  • AI tutors, adaptive assessment tools, personalized learning path generators
  • Content creation pipelines for course authors and curriculum teams
  • Student query handling across LMS platforms without live support overhead

What clients get: higher learner engagement, lower support costs, scalable 1-on-1 interaction at class size

Retail

  • Product recommendation and search relevance improvement
  • Inventory and supply chain query automation
  • Internal knowledge bots for store operations and associate training

What clients get: higher conversion, faster internal response times, reduced dependency on manual reporting

Real estate

  • Property listing generation and comparison from structured data
  • Tenant screening documentation processing
  • Investor report generation from portfolio data

What clients get: faster time from data to decision, more consistent communication across large property portfolios

Healthcare

  • Clinical documentation assistants that summarize patient records and flag anomalies
  • Medical coding support and prior authorization automation
  • Research literature synthesis tools for clinicians and R&D teams

What clients get: reduced administrative burden on clinical staff, faster documentation cycles, HIPAA-compliant data handling

  • Contract review, clause extraction, and risk flagging
  • Case research summarization across large document volumes
  • Regulatory change monitoring and internal policy Q&A

What clients get: faster legal review cycles, lower external counsel costs, reduced human error in high-volume document work

Why choose Geniusee as an LLM development company?


Domain expertise

Up to 2–3x better results on your queries. Fine-tuned LLMs understand your industry-specific language, internal context, and data structure. That’s why you deliver only relevant and accurate outcomes.

Reproducible results

You get consistent performance. Unlike third-party models that may change over time without notice, your own LLM delivers stable, reproducible outputs you can rely on for critical workflows.

Cost predictability

You don’t pay for data volume — you pay for the servers running your models. This gives you full cost transparency, especially at scale. With large datasets, you can accurately predict how much your LLM will cost per month.

Security

None of your data leaves your environment. Unlike public models, your data stays within your private infrastructure and cannot be accessed or used for external training. You retain full control and ownership.

Technology stack we use


LLM Models

Mistral
Mistral
LLaMA 4
LLaMA 4
Gemma
Gemma
Falcon
Falcon
Phi-3
Phi-3
Dolly
Dolly

LLM as a Service

Open AI
Open AI
Amazon Bedrock
Amazon Bedrock
Azure OpenAI Service
Azure OpenAI Service
Google Vertex AI
Google Vertex AI
Anthropic Console/API
Anthropic Console/API
Cohere Platform
Cohere Platform
AWS JumpStart
AWS JumpStart

LLM Infrastructure

NVIDIA Triton Inference Server
NVIDIA Triton Inference Server
TensorRT-LLML
TensorRT-LLML
Ollama
Ollama
vLLM
vLLM
LoRa
LoRa
DeepSpeed
DeepSpeed
Axolotl
Axolotl

Fine-tuning & training

PyTorch
PyTorch
HuggingFace
HuggingFace
Pinecone
Pinecone
Weaviate
Weaviate
Chroma
Chroma

RAG & orchestration

LangChain
LangChain
LlamaIndex
LlamaIndex

Our custom LLM development process


1
Defining objectives
2
Data preparation
3
Model development
4
Deployment and maintenance

Defining objectives

During this phase, we define your specific needs and goals, market challenges, the context in which the model will operate, and use cases that the LLM will address. By the end of it, we will set clear objectives and success criteria.

Data preparation

Our team helps you with data collection. We prepare annotated datasets optimized for model training and fine-tuning by cleaning and annotating them. This involves resolving inconsistencies, handling missing values, and labeling data for the LLM to learn from. The outcome is a refined, high-quality dataset optimized for training your model.

Model development

Next, we select the most suitable LLM architecture based on your needs, then train and fine-tune the model using your prepared data to maximize performance.
Afterwards, we evaluate the model to ensure it meets your target metrics. This process includes multiple iterations of training, evaluation, and improvement.

Deployment and maintenance

Once tested, we deploy your custom LLM solution to a scalable infrastructure. We handle ongoing hosting, maintenance, and support to keep your model up-to-date. As your data and use cases evolve over time, we can retrain and enhance the model to ensure continued high performance.

Our success in numbers

Genuisee’s versatile experience, gained over more than 8 years, has enabled us to form a team with a proven track record.


Geniusee 195 1 2

20+

Countries

180+

Projects completed

80

NPS score

250+

Industry-specific experts

Recognition, certifications, and partnership


logo aws

Certified AWS Partner delivering secure, scalable cloud-native solutions.

logo iso

ISO-compliant processes ensuring quality, security, and reliability.

logo plaid

Trusted integration partner for financial data connectivity and open banking.

logo istqb

Team of ISTQB-certified QA engineers for world-class software testing.

logo 5 1

Consistently rated ★5.0 by clients for reliability and delivery excellence.

logo 5

Accredited partnership supporting advanced testing and continuous QA automation.

Custom LLM development services FAQ


Do you build custom LLMs from scratch, or do you fine-tune existing models?

Both, and we’ll tell you which makes more sense for your situation. Custom training from scratch gives you full architectural control but requires substantial data and budget. Fine-tuning an open-source model like Mistral or LLaMA 4 on your domain data is often faster and more cost-effective for most mid-complexity use cases. We assess this during discovery before any development begins.

How much does custom LLM development cost?

It depends significantly on the scope. A fine-tuning project with existing clean data and a defined use case can start at $30–80k. A full custom training project with data collection, architecture design, and infrastructure setup typically runs $100k+. We provide a detailed estimate after a discovery scoping session, but you also can also calculate an approximate price with our Geniusee Estimator.

How long does LLM development take?

A fine-tuning engagement with good data can move from kickoff to deployment in 6–12 weeks. A custom training project with data preparation from scratch typically takes 3–6 months. We build milestone-based delivery plans so you have clear checkpoints throughout.

Can you deploy the model on our own infrastructure?

Yes. We can deploy on your private cloud, on-premise servers, or a hybrid setup. For regulated industries like healthcare and finance, on-premise or private cloud deployment is often the right choice for data governance reasons. We configure the full serving infrastructure — not just the model.

What data do we need to provide?

It depends on the approach. For fine-tuning, domain-specific text data (internal documents, support tickets, product knowledge bases) is usually sufficient. For custom training, larger labeled datasets are needed, and we help with collection and annotation. For RAG, we work with your existing document corpus directly.

How do you evaluate whether the model is actually working?

We don’t rely on vibes. We define success metrics at the start of the project  (accuracy benchmarks, response quality scores, latency targets) and validate against them before deployment. We use tools like HoneyHive and HumanLoop for structured evaluation, alongside standard benchmarks where applicable.