Blog
Blog
My thoughts on building AI systems that run in production - agents, retrieval, cost and the things that break.
5 min read
What an LLM call actually costs
Most LLM cost tracking multiplies total tokens by a single rate, and that number is confidently wrong at exactly the point where the spend is largest.
llmcostobservabilityproduction
4 min read
Why I deleted five sub-agents and shipped one
A supervisor agent kept mis-routing requests across five specialised sub-agents. The fix wasn't better prompting - it was deleting four of them.
agentsaws-bedrockpostmortem