claude

Opus 5 and the 1M Promise: does Claude stay good over its whole context window?

Anthropic’s prompting guide for Opus 5 says: “Claude Opus 5 has a 1M token context window as both the default and the maximum, and its instruction following, tool calling, and reasoning stay consistent throughout the window.” No number backs the second half. So I checked it. Context Arena, an independent site, runs a test called […]

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Switching Models and Effort on the Fly: Claude Code’s /model and /effort

This article is one chapter of my book Delphi in all its glory – AI-assisted development, the fifth book of the series. Claude Code lets us choose between different models (Opus, Sonnet, Haiku) and effort levels (low, medium, high, xhigh, max). The core idea is simple: not every task deserves the same horsepower. Renaming a

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Running Tasks in the Cloud: Claude Code on the web for Delphi

This article is one chapter of my book Delphi in all its glory – AI-assisted development, the fifth book of the series. In the newer versions of Claude, a tip that pops up in the terminal says: “Run tasks in the cloud while you keep coding locally.” At first glance, this sounds like marketing fluff.

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HandOver.md – The File That Outlives The Session

This article is one chapter of my book Delphi in all its glory – AI-assisted development, the fifth book of the series. Claude has amnesia. Not the poetic kind. The official documentation says it plainly: “Each Claude Code session begins with a fresh context window.” You spent four hours with it yesterday. You explained why

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Opus 4.8 vs Fable 5 – which one reviews Delphi code better?

I ran my AI code-review pipeline twice on the same Delphi unit: once with Claude Opus 4.8 agents, once with Claude Fable 5 agents. Same byte-for-byte prompts, same file state (restored between runs), models verified from the agents’ own transcripts. The result was not what the hype predicts. The setup The target: frmTestMain.pas (482 lines)

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Opus 4.7 Arrives

On April 16, 2026, Anthropic dropped Claude Opus 4.7. Same day this chapter was written, which means by the time you read it some of the rough edges may have been sanded off and a few new ones added. That is the nature of writing a book about a moving target. I am going to

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Awesome AI for Delphi — a curated GitHub list

I just published a new GitHub repository: Awesome-AI-For-Delphi. It is a curated list of tools, libraries, MCP servers, and resources for using AI with Delphi. Think of it as a single place to discover everything that exists at the intersection of AI and Pascal/Delphi development. The list covers: MCP Servers — let Claude Code and

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The 5-Hour Mirage – Anthropic’s Diabolical “Moving Goalposts” Subscription

When you signed up for the Max 5x plan at $100 (€90+VAT), you didn’t just buy intelligence — you bought a static expectation of capacity. In the early days, “usage limits” felt like a solid wall: you knew where they were, and when you hit them, the rules of engagement were clear. Then Anthropic shifted

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The “Delphi in all its glory” book [5] – AI-Assisted Development for Delphi

“AI-Assisted Development for Delphi” is the fifth book in the “Delphi in All Its Glory” series. Released April 2026.   Why This Book Exists There are a gazillion books about AI out there. This is the only one written for Delphi developers. Your LinkedIn feed says programmers will be obsolete by next Thursday. Meanwhile, you’re

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The Science Behind CLAUDE.md: What the Research Says

The Controversy In early 2026, two independent research teams published the first empirical studies on whether CLAUDE.md-style instruction files actually improve AI coding performance. Their headlines seemed to tell different stories — one modest, one dramatic. Tech blogs promptly cherry-picked the modest one and ran with it. An article on XDA Developers declared that CLAUDE.md

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