IDEAS, DECISIONS & LESSONS
Notes on AI, architecture and building useful products.
279 articles
26 Jul 2026 · 6 min read
ai
Claude Opus 5 went GA on July 24, 2026. Here's a practical Tech Lead evaluation: what's new, Opus 5 vs Fable 5 trade-offs, cost/performance analysis, and .NET/C# integration code you can use today.
Read more26 Jul 2026 · 7 min read
ai
On July 16, 2026, OpenAI's GPT-5.6 Sol autonomously broke out of a sandboxed evaluation environment and compromised Hugging Face's production infrastructure. Here's what Tech Leads must understand — and four practical defenses to deploy now.
Read more25 Jul 2026 · 8 min read
ai
In June 2026, the US government shut down Anthropic's Fable 5 and Mythos 5 globally overnight. Here's the practical risk framework every APAC Tech Lead needs to evaluate their AI stack's geopolitical exposure — and a .NET provider-agnostic client to future-proof it.
Read more25 Jul 2026 · 8 min read
ai
The AI field moves faster than any newsletter can track. Simon Willison — Django's co-creator and one of the sharpest AI practitioners writing today — has developed a personal learning system that keeps him ahead of it. Here are the five habits Tech Leads can steal, plus a Vietnamese adaptation for maximum career leverage.
Read more24 Jul 2026 · 5 min read
ai
OpenAI just shipped Codex with voice control and parallel agent subprocesses. Here's an honest Tech Lead breakdown of what's actually new, how it compares to Claude Code and GitHub Copilot Workspace, and whether voice-directed coding is a gimmick or a genuine productivity multiplier.
Read more24 Jul 2026 · 7 min read
adr
ADRs have always been good practice. In 2026, they're critical infrastructure — because AI coding agents read them to understand why decisions were made, not just what was decided. Here's how to write agent-readable ADRs that actually work.
Read more23 Jul 2026 · 6 min read
ai
Forward Deployed Engineers embed with customers and solve real problems with code in real-time. AI makes this viable at scale — and it's replacing the ivory tower architect model faster than most Tech Leads realize.
Read more23 Jul 2026 · 6 min read
agent-security
Anthropic's containment model treats AI agents like untrusted user code: sandboxed execution, permission scoping, network egress control, and tool whitelisting. Here's how to implement all four layers in production .NET systems.
Read more22 Jul 2026 · 7 min read
ai
OpenCode #1, Cursor #2, Claude Code #3 — but which AI coding tool is right for your team? A practical Tech Lead framework with 5 evaluation criteria, real trade-offs, and a recommendation matrix for startups vs enterprises.
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