“Agentic AI” is the most-discussed term of 2026, and most of what gets written about it looks at the same angle: enterprise transformation, productivity gains, automated customer service. All true, and none of it answers the question a developer actually has: how does this thing work? This post takes that angle. How the loop turns, which component actually executes tool code, why memory became its own architectural layer in 2026, and where these systems break 🤖 ...

If you have been using Claude Code for a while you have definitely run into three terms: skill, subagent and hook. All three live under “customizing Claude Code” and at first glance they look like they do the same job. They don’t. Each solves a different problem, and picking the wrong one means either needless complexity or a setup that never fires 🛠️ The Short Answer The decision rule Skill: when you keep writing the same instructions over and over Subagent: when a job produces so much output it floods your main conversation Hook: when you need a rule to hold without exception Slash Commands Are Skills Now The biggest change first, because most older guides miss it: custom slash commands have been merged into skills. ...

If you have hit extended thinking and adaptive thinking back to back in Claude’s docs and wondered whether they are the same thing, you are not alone. Short answer: they are not, and you are almost certainly using adaptive thinking already without realizing it 🧠 What Is “Thinking” in Claude? Before answering, Claude can use a scratchpad to reason through the problem on its own. It works step by step, rules out possibilities, does the math, then delivers the final answer. ...

Anthropic today announced Claude Opus 5, the new flagship of the Claude family. The model brings a major jump over Opus 4.8 in agentic coding, knowledge work, computer use, and scientific research. Best of all, these gains ship at the same price. Let’s look at what the new model offers and where it stands against its rivals 🚀 What Is Claude Opus 5? Opus 5 is Anthropic’s most capable general-access model to date. Replacing Opus 4.8 , it shines especially in complex, long-horizon agentic tasks. ...

On July 21, 2026, alongside Gemini 3.6 Flash and 3.5 Flash-Lite, Google announced a third model that is nothing like the other two. Gemini 3.5 Flash Cyber is purpose-trained for cybersecurity, and it is not generally available. It is a 3.5 Flash derivative fine-tuned to discover, validate, and remediate software vulnerabilities. It got its own separate post on the DeepMind blog, which itself says a lot about how differently Google treats this one. ...