John Berryman
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jnbrymn.bsky.social
John Berryman
@jnbrymn.bsky.social
LLM consulting @ https://arcturus-labs.com/

Author x2: https://amzn.to/3TXmDHk, https://amzn.to/3zKIxGG

Formerly Eventbrite, GitHub (code search and Copilot)
I had an absolute blast talking about the "7 Deadly Sins of AI Applications" with Hugo Bowne-Anderson, and I'm really pumped to see it in text form now!

(But I do think that neither cartoon John or cartoon Hugo are as handsome as the real deal.)

hugobowne.substack.com/p/patterns-a...
October 24, 2025 at 1:02 PM
You probably knew you could turn an LLM into a classifier. But the basic approach returns a hard classification – yes or no; good or bad.

In this post I'll show you a simple technique to make your LLM classifiers more nuanced – they tell you HOW good or HOW bad something is.
June 12, 2025 at 3:14 PM
OpenAI just revolutionized image generation, but that's just the beginning. The real game-changer? Visual reasoning is coming - where AI won't just manipulate images, but will actually think through problems using visual simulation.
April 7, 2025 at 4:03 AM
Home for the holidays means cozy blankets, the scent of pine, and a tech book in the stocking. Prompt Engineering for LLMs—the perfect gift for the developer who finds magic in code and creativity in AI.
December 20, 2024 at 5:02 PM
This is super exciting: Prompt Engineering for LLMs, has been selected for an upcoming beta feature on the O'Reilly Learning platform—AI-powered audio summaries.

They've created two versions (next posts) tell me what you think.
December 17, 2024 at 7:53 PM
Look out folks! I am Liu-certified to be an AI Consultant now!
Kidding aside, this course really helped me organize how I think about consulting. If you're thinking about tech consulting (even outside of AI), you should consider joining the next cohort maven.com/s/course/3aa...
December 16, 2024 at 9:00 PM
Mission accomplished. I'm done for the day.
December 13, 2024 at 10:50 PM
This is a really neat info graphic about the architectural lineage of LLMs.

Also TIL Claude still has an encoder?!

source: arxiv.org/abs/2412.03220
December 9, 2024 at 5:11 PM
I've already found the perfect way to put my book to use!

It's just thick enough to boost my big screen above my laptop screen.
November 21, 2024 at 7:16 PM
🥳 I'm so excited to finally hold Albert and my book in my hands. How awesome to have _written_ a book.

It's still pre-order on Amazon amzn.to/4fMj2Ef but I'll post when it comes live soon.

(If you like my writings follow me and also check out arcturus-labs.com)
November 21, 2024 at 7:15 PM
Not bad!
June 22, 2023 at 7:11 PM
Finally retiring my COVID bookmarks folder. Finally seems like it doesn't matter.
May 9, 2023 at 11:32 PM