Hello, World!

Apr 22, 2026 building with AI · 3 min read
Hello World design

When you are first learning a programming language, you learn to write "Hello, World!" as your first program to show you have everything set up correctly.

It started as a pattern back in 1972 when Brian Kernighan, a computer scientist, used it in a Bell Labs tutorial to learn the language B. Then in 1978, the same Brian Kernighan along with Dennis Ritchie wrote the book The C Programming Language where the pattern was used again and the rest is history.

If you don't know what the language B is, don't worry, I don't either. Now, C, that I know. Learned it back in college when I was studying computer science. I remember working very hard to close any memory leaks in my programs.

But enough about C!

Last week I was very excited when Anthropic came out with their Claude Design tool and I couldn't help to try my first "Hello, World!" using Claude Design.

Here was my prompt:

"You omg i want to make like the COOLEST HELLO WORLD FIRST DESIGN. like hello WORLD"

As you can see I did not bother with any memory leaks or even proper sentences here, yet Claude got to work.

Claude's first response

Then I felt like I needed to clarify that what I meant in my enthusiastic sentence is that "Hello, World!" should be in all the languages.

My follow-up message

Turns out, Claude already got that covered.

Claude's response about languages

Here is the result.

Open full screen →

Isn't it incredible?

I know a few years from now we will take this all for granted and take it as normal, but for now let's marvel in the fact that this is a major leap in capabilities. All from a single prompt.

— Lucie