A custom GPT is a chat assistant trained or grounded on your own data so it answers in the voice and with the knowledge of your organisation. ChatGPT custom GPTs are easy to spin up but live on OpenAI infrastructure with limited compliance posture. Our custom GPTs run on Azure OpenAI / GPT-4o via Microsoft AI Foundry in the EU, with grounded RAG, citations and audit logging. Live with GDV, a leading member network and a leading German association.
GDV runs an AI Knowledge Assistant – effectively a custom GPT – over tens of thousands of policy documents for 400+ member insurance companies. Researchers find what they need in half the time, shadow AI use has dropped, and internal employee satisfaction is up.
A leading member network runs a production custom GPT on n8n + Qdrant + GPT-4 via Microsoft EU, serving 1,000+ HumHub members. Operated by a team without developers.
A leading German association combines a custom GPT with traditional category filters in a member platform, on Microsoft AI Foundry + pgvector – members can ask plain-language questions and still browse the catalogue.
Example: Custom GPT Knowledge Assistant in production
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Grounded in your data
EU-hosted by default
Human-in-the-loop
Time to first project
first working version in four short sprints
Compliant by design
EU AI Act and GDPR posture built into the architecture, not retrofitted
Operable by your team
low-code architecture documented for non-technical operators
1. Use case and architecture
2. Build the working system
3. Hand over
We bring a decade of impact-tech experience and over 160 AI projects since 2019. Through our free AI for Impact course, more than 100,000 people have learned to use AI for the common good. We do not run inspiration days. We run scoping sessions and build engagements that ship – the way we have delivered AI for the organisations below:
A leading member network – production RAG chatbot serving 1,000+ HumHub members on n8n + Qdrant + GPT-4 via Microsoft EU, delivered in four sprints
GDV (German Insurers Association) – AI Knowledge Assistant over tens of thousands of policy documents for 400+ member companies
A leading German association – AI Member Platform combining chat-based discovery with traditional category filters
A leading donation platform – AI email agent with mandatory human review in pilot, on N8N and Azure OpenAI
Evangelische Bank – production sustainability scoring B2B tool aligning customers with the Paris 1.5°C climate target via XDC metrics
Default stack: n8n in Berlin, Qdrant in the EU, Azure OpenAI via Microsoft EU Sovereignty.
AI does not replace your operators or experts. It removes the lookup and drafting work. The judgement call stays with a human.
Mandatory human review for outbound communication. Anything that goes to a customer, member or beneficiary should be drafted by AI and signed off by a human.
Hallucination is the failure mode to design against. Grounded RAG with citations, not free-text generation. If a system cannot cite its source, treat its answer as a guess.
How long does a first project take?
Is your stack EU-compliant?
Can our non-technical team operate the system?
Do you handle regulated data?
Tell us about your use case. We will reply with a proposed architecture and a date, usually within a working day.
Simon Stegemann
Co-Founder and CEO
