DSI Lab · LLM engineering
Custom LLM & generative-AI app development
When you need AI built into a product — a copilot, an internal tool, a generative feature — you need more than a prompt. We engineer LLM applications with the architecture, evaluation and cost control to run reliably in production.
The problem
AI prototypes are easy; AI that's accurate, fast, affordable and reliable in production is hard.
What you get
Capabilities
Production architecture
FastAPI microservices, vector stores, queues and caching designed for latency, cost and scale — not a notebook that breaks under load.
Model strategy
We choose between OpenAI, Anthropic and open models per task, balancing quality, latency and cost — and avoid lock-in.
Evals & quality
Evaluation sets and regression tests so you can change prompts and models with confidence instead of guessing.
Copilots & features
In-app assistants, generation and automation features that fit your existing UX and data model.
Use cases
Where this fits
- Copilots and assistants inside your existing app
- Generative features (drafting, summarising, extraction)
- AI-powered internal tooling
- Content and automation pipelines
Stack
Built with
Proof
Related work
Legal-Knowledge RAG Assistant
A Greek-language assistant that answers questions over a large body of legislation — hybrid retrieval (keyword + vector), LLM reranking, and a multi-layer verifier so answers stay grounded in the actual text, with citations.
Read case studyNeorama
Built with DSI CMS
An accredited training center (25 years, 15,500+ students, 40+ courses) running on our DSI CMS — content and courses managed without code.
Read case studyFAQ
Questions, answered
Can you add AI to our existing software?
Yes — that's a common engagement. We integrate AI features into your current product and data model rather than forcing a rebuild.
How do you control AI costs?
Through model selection per task, caching, prompt and context optimisation, and choosing open models where they're good enough — measured against evals so quality doesn't slip.
Also relevant
Related services
Ready to scope it?
Book a free assessment and we'll map the fastest path to value.