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Field notes from shipping AI.
Practical writing on evals, agents, RAG, infrastructure, and product decisions — from the systems we've actually put in production.
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More writing.
Agents·Jul 30, 2026
Agents that actually finish tasks
A production pattern for planner/executor loops with recovery and cost control.
AgentsArchitectureProduct
Research·Jun 03, 2026
Fine-tuning vs. RAG in 2026
A decision framework we actually use with clients, plus the numbers behind it.
Fine-tuningRAGLLMs