The AI agency alternative that puts the API key in your hand.

AI agencies charge £15,000–25,000/month for wrapper applications over the same APIs you could call directly. TailorStack builds custom RAG pipelines deployed to your cloud infrastructure — one-time fixed price, no per-token markup, you own everything.

Why teams leave AI Agencies

• You’re paying £15k–25k/month for an application that costs £1.5k–3k in underlying API calls.
• Your proprietary data flows through the agency’s infrastructure with no SOC 2 compliance or enterprise security.
• The ‘proprietary AI’ is a prompt template wrapped around a foundation model anyone can access.
• When the agency raises prices or changes terms, you have no leverage — cancel and the system switches off.
• You don’t own any of the code, embeddings, or fine-tuning work. Years of data investment disappears if you leave.

What you get instead

Custom RAG pipelines built on your cloud infrastructure. Your data stays in your AWS, GCP, or Azure tenancy. Vector database provisioned in your VPC. Direct API calls to the model provider — no markup. Document ingestion, semantic search, and retrieval tuned for your specific data. Swap models whenever better options launch. Built in 4–6 weeks, one-time fixed price.

AI Agencies vs TailorStack