AI engineering 12 min read
50 Levels of AI Engineering
A practical maturity model from the first single-prompt application to autonomous agent research and development.
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50
levels across seven phases
Articles
Ideas for building systemsthat can do real work.
Long-form field notes on AI engineering, software systems, and the practices that turn promising demos into dependable infrastructure.
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Field notes
Agent harnesses 9 min read
DeepSeek Harness vs. Codex: What the Harness Makes Possible
DeepSeek Harness is less a coding agent than a proposition: make the runtime composable, make every run inspectable, and let developers reshape the whole stack.
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Composable runtime
plugins, trajectories, modes