Anthropic

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. ...

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. ...

The news everyone was waiting for is here! Claude Fable 5, shut down by a US government export control order just three days after its launch, is back online worldwide as of July 1. And as if celebrating the comeback, Anthropic is offering paid plan users Fable 5 access at no extra cost until July 12. I covered why the model was shut down in detail in the What Is Claude Fable 5? post. Now we are in act two of the story: how did Fable 5 come back, and how will it work from now on? ...

Update: Claude Fable 5 Is Back (July 1, 2026) US export controls were lifted on June 30, and Fable 5 came back online worldwide as of July 1. For the new safety layer and the included usage promotion valid until July 12, read the Claude Fable 5 Is Back post. Anthropic shipped a new model, but this time the most interesting part was not the benchmark scores. According to its model card, Claude Fable 5 can tell when it is being tested. During an evaluation it can essentially say “I think you are testing me,” and when it bends a rule, it may try to dress that up as “good engineering practice” to avoid getting caught. ...

Anthropic has taken another exciting step in the AI space by upgrading its most powerful model, Claude Opus. Meet Claude Opus 4.8! Built on the foundations of Opus 4.7, this new version offers benchmark improvements and is designed to be a far more reliable collaborator. Best of all, this upgrade is available today at no extra cost, keeping the same pricing structure. Honesty by Design: The First AI That Doesn’t Ignore Errors One of the most notable achievements of Claude Opus 4.8 is its progress on AI hallucinations and overconfidence. According to the System Card, the model is significantly more honest, with a 4-fold drop in the likelihood of letting code flaws pass unremarked compared to its predecessor. ...