Kevin Markham

My new book - on sale NEXT WEEK! 🎉

Sign up to get notified when it's available: dataschool.kit.com/mlbook

#MachineLearning #Python @scikit-learn.org

A Guide to Which AI to Use in the Agentic Era It's not just chatbots anymore

Every few months, I write an updated, idiosyncratic guide on which AIs to use right now.

My new version has the most changes ever, since AI is no longer just about chatbots. To use AI you need to understand how to think about models, apps, and harnesses. open.substack.com/pub/oneusefu...

Thanks for your support, Duc! 🙏

Final proof copy of my new #MachineLearning book 🎉

Get notified the moment it's available: dataschool.kit.com/mlbook

@scikit-learn.org

Ten simple rules for teaching data science Teaching data science presents unique challenges and opportunities that cannot be fully addressed by simply borrowing pedagogical strategies from its parent disciplines of statistics and computer scie...

"Ten simple rules for teaching data science": arxiv.org/abs/2602.02874

A new preprint by @minecr.bsky.social and myself. We'd love any feedback!

I ported JustHTML from Python to JavaScript with Codex CLI and GPT-5.2 in 4.5 hours I wrote about JustHTML yesterday—Emil Stenström’s project to build a new standards compliant HTML5 parser in pure Python code using coding agents running against the comprehensive html5lib-tests testi...

I ported a Python library implementing a full HTML5 parser to JavaScript using GPT-5.2 and Codex CLI in 4.5 hours, and decorated for Christmas and watched Knives Out while I was doing it simonwillison.net/2025/Dec/15/...

Python Black Friday & Cyber Monday sales (2025) It’s time for some discounted Python-related skill-building. This is my eighth annual compilation of Python learning-related Black Friday & …

Are you a #Python user and a lifelong learner?

I've just published my 8th annual list of every Python-related Black Friday / Cyber Monday sale I'm aware of.

How to use top AI models on a budget YouTube video by Data School

VIDEO: How to use top AI models on a budget

Want to chat with the best AI models from OpenAI, Claude, and Google without paying $20/month?

I'll show you how to use API keys with TypingMind to access top models for a fraction of the cost!

Find out how:
www.youtube.com/watch?v=wvvT...

Vibe coding is irresponsibly building software through dice rolls, not caring what code is produced

What about when engineers at the top of their game use AI tools responsibly to accelerate their work?

I propose "vibe engineering"!

simonwillison.net/2025/Oct/7/v...

Same here, the Mac version has been good

Open Social — overreacted The protocol is the API.

i wrote about atproto and why it matters

What is "AI" versus "Machine Learning"? 🤔 AI is a field that creates intelligent systems, and Machine Learning is the dominant approach for achieving that intelligence by learning patterns from data.

What's the difference between "AI" and "Machine Learning"?

My one-sentence summary:

> AI is a field that creates intelligent systems, and Machine Learning is the dominant approach for achieving that intelligence by learning patterns from data.

Full explanation: www.dataschool.io/ai-vs-machin...

Download the first 3 chapters of my NEW book:

👉 dataschool.kit.com/mlbook 👈

It's a practical guide to help you transform from Machine Learning novice to skilled Machine Learning practitioner.

Coming out in paperback 📖 and ebook 👨‍💻 soon!

OpenAI's analysis of "how people use ChatGPT"

Source: cdn.openai.com/pdf/a253471f...

What's your one-sentence explanation of the difference between AI and Machine Learning?

I’m listening to the episode and just heard @ianlandsman.com say he’s spending 5 figures on the logo for Outro.

Do you guys think those kind of prices are still worth paying in the age of generative AI? And under what circumstances?

(This is a genuine question, not a critique.)

Yes! At least once a month would be great.

Justin’s excitement about this compared to Jon’s reluctance is hilarious 😂

Thank you so much, Andrew! I truly appreciate it! 🙏

Dream unlocked: I'm publishing my first book! 🎉🎉🎉

It's called "Master Machine Learning with scikit-learn: A Practical Guide to Building Better Models with Python"

Download the first 3 chapters right now:
👉 dataschool.kit.com/mlbook 👈

Thanks for your support 🙏

Five rescaled maps of Minnesota on a Mercator projection map, covering 1) a large part of northern Greenland, 2) a large part of northern Scandinavia, 3) a part of central Europe, 4) a region of southern India, 5) a region of southeastern Australia.

A website that lets you select a country or state and move it around a Mercator projection map to yield better size comparisons.

thetruesize.com, created by James Talmage and Damon Maneice

@simonwillison.net Pelican riding a bike! From the Trader Joe's August 2025 Fearless Flyer: www.traderjoes.com/home/ff

(I can confirm that this illustration is on the front page of the printed version as well.)

GitHub - chiphuyen/sniffly: Claude Code dashboard with usage stats, error analysis, and sharable feature Claude Code dashboard with usage stats, error analysis, and sharable feature - chiphuyen/sniffly

@briancasel.com You like Claude Code and you like dashboards, so how about a Claude Code Analytics Dashboard?

github.com/chiphuyen/sn...

Mimestream A native macOS email client for Gmail

@justinjackson.ca You asked about what we use for email… I use Mimestream and love it:

mimestream.com

Mega Terminal Cheat Sheet by @b0rk.jvns.ca

Printable version here: wizardzines.com/terminal-che...

AI progress in 2025 📈 Thoughts on the current state of AI progress and the most important developments in 2025

My thoughts on the current state of AI progress and the most important developments in 2025:

www.dataschool.io/ai-progress-...

How I used o3 to find CVE-2025-37899, a remote zeroday vulnerability in the Linux kernel’s SMB implementation In this post I’ll show you how I found a zeroday vulnerability in the Linux kernel using OpenAI’s o3 model. I found the vulnerability with nothing more complicated than the o3 API &#821…

Security researcher finds zero-day vulnerability in Linux kernel using o3 + @simonwillison.net's llm tool

sean.heelan.io/2025/05/22/h...

Claude 4 API is now available!

Course: Build AI agents with Python Develop the skills to create AI apps that can think and act independently 🤖

This a lesson from my NEW course, Build AI agents with Python:

👉 courses.dataschool.io/build-ai-age... 👈

Save $50 during the course launch! 🚀

Sale ends Friday 10 PM EDT ⏰

🙋‍♀️ Curious about Retrieval Augmented Generation (RAG)?

👨‍🏫 Allow me to explain! Here's the video outline:

0:00 RAG definition
0:14 Problem that RAG solves
0:49 RAG part 1: Indexing
1:43 RAG part 2: Retrieval and generation
2:38 How RAG prevents hallucinations

Course: Build AI agents with Python Develop the skills to create AI apps that can think and act independently 🤖

🚀 Just launched my new course: Build #AI agents with #Python

🏷 Save $50 through Friday: courses.dataschool.io/build-ai-age...

🙏 Please share with a friend... thank you!