Blog
Notes from the workbench.
Writing on engineering with AI, shipping to production, and running a studio that bills by the project — not the hour.
AI Agents8 min
Building production-ready AI agents: a guide
A practical guide to production-ready AI agents: define the job, limit authority, design safe tools, evaluate decisions, and plan for failures.
Hafsteinn Runarsson · 11 Aug 2026
AI7 min
How much does it cost to build an AI agent?
AI agent engagements start from EUR18k. Learn how scope, integrations, evals, human oversight, data readiness, and support shape the final quote.
Hafsteinn Runarsson · 11 Aug 2026
AI Development9 min
How to choose an AI development agency
A practical checklist for evaluating an AI development agency — from problem framing and evaluation to production delivery, commercial terms, and handover.
Hafsteinn Runarsson · 11 Aug 2026
AI delivery7 min
How to evaluate LLM applications: a framework
A repeatable framework for evaluating LLM applications across task completion, correctness, grounding, safety, tool use, and production performance.
Hafsteinn Runarsson · 11 Aug 2026
AI development8 min
White-label AI development for agencies: how it works
A practical guide to scoping, delivery, client communication, ownership, and handover when your agency needs a white-label AI development partner.
Hafsteinn Runarsson · 11 Aug 2026
Field Notes5 min
Why we ship in production, not in slides
A deck is a promise. Production is proof. The case for ending every engagement with something running.
Hafsteinn Runarsson · 04 Jun 2026
AI8 min
Building agents that survive contact with users
Demos are easy. The difficulty begins when a real person asks the thing you never tested for.
Hafsteinn Runarsson · 21 May 2026
Growth6 min
Fixed price: why we carry the overrun risk
How carrying the overrun risk ourselves made clients braver and our scoping sharper.
Hafsteinn Runarsson · 09 May 2026
Engineering7 min
Full-stack, literally: one team, one build
On the cost of handoffs, and why the schema and the interface should live in the same heads.
Hafsteinn Runarsson · 28 Apr 2026
Field Notes4 min
Bergen to everywhere: remote by design
A small studio on the Norwegian coast, shipping for clients on four continents. How the seams hold.
Hafsteinn Runarsson · 14 Apr 2026
Engineering9 min
Evals are the new unit tests
You would not ship code without tests. Stop shipping prompts without evals.
Hafsteinn Runarsson · 02 Apr 2026