book - Delphi, in all its glory

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

Delphi / AI, Anthropic, book, claude, claude code, Delphi

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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The address of a property: what the Delphi compiler does with @, var and FreeAndNil

Delphi / book, code, Delphi, freeandnil, Pascal, programming

This article is one chapter of my book Delphi in all its glory – For more than mere programmers, the first book of the series. Want to see what the compiler really does with a property? Ask for its address. Below, Obj.Prop is a read-only property that either reads the field FProp directly or calls

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Voice Dictation in Claude Code: /voice on Windows

Delphi / AI, Anthropic, book, claude, claude code, Delphi

This article is one chapter of my book Delphi in all its glory – AI-assisted development, the fifth book of the series. Claude Code has a voice dictation feature that lets you speak your prompts instead of typing them. You hold down a key, talk into your microphone, and your speech appears in the input

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

Delphi / AI, Anthropic, book, claude, claude code, Delphi, llm

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

Delphi / AI, Anthropic, book, claude, claude code, Delphi, llm

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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Opus 5.5: cheaper than Opus 5, and on a cybersecurity leash

Delphi / AI, Anthropic, book, claude, claude code, Delphi, llm

This article is one chapter of my book Delphi in all its glory – AI-assisted development, the fifth book of the series. According to Anthropic (therefore, take these numbers as a direction, not as a promise), Claude Opus 5.5 works at the level of Fable 5.1 on most jobs, and costs 40% less to run

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HandOver.md – The File That Outlives The Session

Delphi / AI, Anthropic, book, claude, claude code, Delphi, llm

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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How Much Money Is Anthropic Losing on You?

Delphi / AI, Anthropic, book, claude, claude code, Delphi, llm

This article is one chapter of my book Delphi in all its glory – AI-assisted development, the fifth book of the series. Anthropic’s figure above, $150-250 per month, is the average across enterprise deployments. A heavy user is a different story. Some Delphi users investigated what their subscription would cost at API list prices. One

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Ctrl+C: Copy or Kill? – Stop it from cancelling Claude Code

Delphi / AI, Anthropic, book, claude, claude code, Delphi, llm

This article is one chapter of my book Delphi in all its glory – AI-assisted development, the fifth book of the series. In Windows, Ctrl+C means Copy. In a terminal, it means Stop. In Claude Code, it means whichever one you did not want. I press Ctrl+C by reflex. In Claude Code, one stray press

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CaveMan – Making Claude Talk Less

Delphi / AI, Anthropic, book, claude, claude code, Delphi, llm

This article is one chapter of my book Delphi in all its glory – AI-assisted development, the fifth book of the series. Claude is verbose. Ask it to fix a one-line bug and you get three polite paragraphs before the fix arrives. Every one of those words is an output token, and output tokens cost

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Skills vs Agents: when to use each in Claude Code

Delphi / AI, Anthropic, book, claude, claude code, Delphi, llm

This article is one chapter of my book Delphi in all its glory – AI-assisted development, the fifth book of the series. Skills and sub-agents are both ways to extend Claude’s behavior, and they’re easy to confuse at first. They look similar on the surface but work very differently under the hood. A skill is

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What 47 Skills Actually Cost You: Claude Code’s skill budget

Delphi / AI, Anthropic, book, claude, claude code, Delphi, llm

This article is one chapter of my book Delphi in all its glory – AI-assisted development, the fifth book of the series. Skills are addictive. Each one solves a real annoyance, each one takes ten minutes to write, and none of them feels expensive. Then one day you run /doctor and it tells you that

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Fixing Claude’s Output

Delphi / AI, Anthropic, book, claude, claude code, Delphi, llm

This article is one chapter of my book Delphi in all its glory – AI-assisted development, the fifth book of the series. Somewhere around Opus 5 a new complaint started showing up everywhere: the model got smarter and the answers got harder to use. Not wrong. Harder to use. You ask a small question and

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

Delphi / AI, Anthropic, book, claude, claude code, Delphi, llm, Pascal, programming

“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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Trying out Claude Code for Delphi

Delphi / AI, Anthropic, book, claude, claude code, Delphi, llm, Pascal, programming

Using Claude Code for Delphi — What I Learned Writing a Book About It What started as a frustrated blog post became a 280-page book. Here’s the story. In early 2026, a post on Delphipraxis claimed that one hour of development with Claude Code was worth a full day of solo programming. Bold claim. I

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$(Auto) – One package to rule them all

Delphi, Libraries, Packages / book, code, Delphi, IDE, libraries, Pascal, path, programming, VCL

Note: This page is an excerpt from my “Delphi in all its glory – Libraries” book. $(Auto) is a new environment variable, introduced in Delphi 10.4. Embarcadero didn’t make a big show around it so it went unnoticed by most programmers. But don’t ignore it! It is extremely useful for packages, where it can

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