IDEAS, DECISIONS & LESSONS
Notes on AI, architecture and building useful products.
904 articles
15 Sep 2026 · 4 min read
english-lesson
Daily English practice for tech professionals. Morning session covering LLM evaluation and hallucination with pronunciation guide, exercises, and real-world examples.
Read more15 Sep 2026 · 3 min read
ai
A friend's offhand comment sent me back to check my own AI habits against a new study on dependent vs. autonomous cognitive offloading. The two feel identical in the moment. They aren't.
Read more15 Sep 2026 · 4 min read
agents
Fable 5.1 can read every earlier Claude model's thinking blocks. No earlier model can read Fable 5.1's. That asymmetry looks like a footnote until your team needs to roll back a production agent mid-incident.
Read more15 Sep 2026 · 4 min read
cloudflare
Node.js compatibility on by default, a 64 MiB size cap, and a URL-based module registry landed in Workers on September 9. I moved a small Express-style API over. Here's what actually broke and what didn't.
Read more14 Sep 2026 · 5 min read
ai
Qdrant released a 10-billion-document benchmark dataset on September 1, 2026, built from over a quadrillion brute-force distance calculations. I ran our production filter patterns against the old 1M-vector benchmark we'd been trusting. The gap explains a slowdown we never diagnosed.
Read more14 Sep 2026 · 5 min read
agents
On September 3, 2026, Cursor let you swap its own cloud-agent infrastructure for eight other backends, including Vercel Sandbox. That's not a partnership announcement. It's Cursor telling you where its moat actually is.
Read more14 Sep 2026 · 4 min read
api-design
Daily English practice for tech professionals. Morning session covering API design and idempotency with pronunciation guide, exercises, and real-world examples.
Read more13 Sep 2026 · 5 min read
agentic coding
Claude Code v2.1.269 adds claude plugin eval — six grader types, a no-plugin baseline, and CI flags like --threshold and --max-cost-usd. A Tech Lead's walkthrough of what it fixes and how to wire it into a release gate.
Read more13 Sep 2026 · 5 min read
agentic coding
SWE-2 matches Fable 5.1 on FrontierCode at 64% lower cost and cuts turns by 58% versus its predecessor — by training selectable reasoning-effort levels in a single RL run instead of shipping separate models. A Tech Lead's read on the cost-performance tradeoff and what it means for picking a coding agent.
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