AI field notes

Practical notes on AI automation.

Rewritten from my Vietnamese AI articles for western clients and builders: what I tried, what I learned, and how I think about LLM systems that need to run in the real world.

These essays show the same working style I bring into client projects: clear context, careful tradeoffs, production mindset, and no magic-box promises.

Prompt caching blog cover with AI workflow blocks and orange accents

AI AgentsMay 19, 20265 min read

Prompt Caching: How I Think About Cutting AI Agent Costs

A practical note on prompt caching, long context, and why production AI agents need cost design before they need more clever prompts.

Read article

AI guardrails blog cover with shield, lock, and automation warnings

AI SafetyMay 17, 20266 min read

AI Guardrails Are Not Optional Anymore

A plain-English reflection on Anthropic's safety warnings and what they mean for anyone building AI workflows for real users.

Read article

System prompts blog cover showing policy, tools, and memory blocks

AI AgentsMay 16, 20266 min read

System Prompts: The Small File That Makes AI Agents Work Better

What I learned about treating system prompts like operating instructions instead of one-off magic text.

Read article

AI product lessons blog cover with growth chart and model layers

AI ProductsMay 16, 20265 min read

What Anthropic's Growth Taught Me About AI Products

A reflection on why fast AI adoption still depends on trust, distribution, and workflows that survive real usage.

Read article

Computer use blog cover with desktop windows and AI workflow connections

AI AutomationMay 15, 20265 min read

Computer Use in Codex: When AI Starts Clicking the Screen

What computer-use agents suggest about the next layer of automation: not only APIs, but real UI workflows.

Read article

Context wins blog cover with chaotic blocks becoming a clean AI workflow

Context EngineeringMay 14, 20266 min read

Why AI Agents Fail: Context Beats Prompt Tricks

A practical look at why many agents do not fail because the prompt is weak, but because the context is messy.

Read article

After AGI blog cover with horizon, branching paths, and AI model core

AI FutureMay 13, 20265 min read

After AGI: The Questions I Keep Coming Back To

A grounded reflection on the future of work, science, and responsibility after listening to AGI conversations from leading AI labs.

Read article

Business automation blog cover with documents, suppliers, dashboards, and AI workflow nodes

AI AutomationMay 13, 20265 min read

Alibaba's Accio Work and the Future of Business Automation

What an AI business agent suggests about sourcing, operations, and the next wave of practical automation tools.

Read article

Build with AI blog cover with website layout, code panel, and deployment pipeline

AI BuildingApril 25, 20267 min read

How I Built a Professional Website With AI

A realistic look at using AI to build a website: where it helps, where it does not, and what still needs human judgment.

Read article