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Field notes on AI governance

Long-form guides for finance, security, and IT leaders building real AI accountability — without banning the tools their teams rely on.

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June 25, 20266 min read

When an AI agent runs up your bill overnight: who owns it, and how to stop it

An autonomous AI agent can run up your bill overnight. Govern each one with an owner, an approved model scope, a budget with an automatic cutoff, and a kill switch.

June 8, 20265 min read

Introducing Tallin: the runtime control plane for AI

Tallin is the runtime control plane for AI use by humans, apps, and agents: every AI actor gets an owner, a model scope, a budget, a policy, an audit trail, and an off switch. Here is why we built it, and how to become a design partner.

May 29, 20269 min read

How to track AI usage across your company (without banning it)

A 90-day framework for building an honest AI usage ledger that covers ChatGPT, Claude, Copilot, and Gemini — without forcing employees off the tools they rely on.

May 28, 20268 min read

Your AI policy is paperwork without these 3 controls

An AI policy auditors take seriously isn't a Notion doc — it's a document backed by three specific runtime controls. Here's what each one looks like in practice.

May 27, 20268 min read

Why your OpenAI bill keeps growing — and 4 ways to make it stop

Mid-market OpenAI bills don't grow because employees are reckless — they grow because procurement, attribution, and gateway controls are missing. Here's how to fix each one.

Turn AI policy into a ledger you can defend.

Tallin is the system of record for AI usage across your company: provider telemetry, gateway traffic, billing evidence, identity context, discovery signals, and the gaps you still need to close.