Answers from your data
Responses grounded in your approved documents.
Custom ChatGPT & LLM Solutions
We build business-specific AI assistants powered by large language models and retrieval-augmented generation (RAG), so answers come from your own approved knowledge.
Overview
Understanding custom LLM solutions
A large language model on its own doesn't know your policies, products or documents. Retrieval-augmented generation (RAG) finds the relevant information from your knowledge base and gives it to the model, so answers are grounded and can cite sources.
We design the knowledge pipeline, permissions, prompts and evaluation together. Custom solutions are built on models from providers like OpenAI or Anthropic; they are not official products of those companies.
What's included
What our Custom LLM & RAG Solutions service includes
Knowledge base preparation
Cleaning, structuring and chunking documents for reliable retrieval.
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Benefits
What Custom LLM & RAG Solutions brings to your business
Every engagement is shaped around your goals. These are the outcomes we design for from day one.
Source citations
Users can check where an answer came from.
Respects permissions
Sensitive content stays with authorised people.
Predictable costs
Usage monitored and model choice optimised.
Contact us
Plan your Custom LLM & RAG Solutions project
Tell us what you're trying to achieve. We'll recommend an approach, outline the scope and explain the trade-offs, with no obligation.
How we work
Our AI & Automation process
A clear sequence from first conversation to measurable results, scaled to the size of your project.
- 1
Use-case fit
We confirm the problem, the users and whether AI or simple automation is the right tool.
- 2
Data & design
We review the data, integrations, permissions and how errors will be handled.
- 3
Prototype & evaluate
A working prototype tested against real examples, edge cases and quality targets.
- 4
Integrate & secure
Connected to your systems with access controls, cost limits and human handoff.
- 5
Monitor & improve
Ongoing tracking of quality, cost and usage, with regular improvements.
Our advantage
Why AgenCoder
One integrated team
Strategy, design, engineering, AI and marketing work together, so nothing gets lost between agencies.
Transparent delivery
Written scope, assumptions and exclusions, regular demos and honest updates when something changes.
Secure and maintainable
Secure defaults, tested releases and documentation, so your solution keeps working long after launch.
Blog
Related reading on Custom LLM & RAG Solutions
Practical guides on software, AI, automation and digital growth.
Custom LLM & RAG Solutions FAQ
Frequently asked questions
Can't find what you're looking for? Ask us directly.
RAG retrieves up-to-date information at question time and is usually best for knowledge assistants. Fine-tuning changes a model's behaviour or style. Many projects need only RAG.
Contact
Tell us about your challenge
Share what you're working on. We'll tell you honestly how we'd approach it, and whether we're the right fit.
What happens next
- 1We read your message and reply with any quick questions.
- 2A short discovery call to understand your goals.
- 3A written proposal with scope, timeline and estimate.