Niels Berglund

**This week is like the last week: three posts, and each one pokes at the same question from a different angle: what happens once a model stops being judged on what it says and starts being judged on what it does. ** One data scientist spent months teachi…

Three posts this week, and all three are about the same uncomfortable truth: when writing code stops being the bottleneck, the bottleneck moves somewhere you weren’t watching.

Four posts this week, and two of them independently reached for the same metaphor: the “dark factory”, lights off, machines running through the night, nobody on the floor.

Three posts this week, and they split neatly into two halves of the same story: what the models can now do, and what that does to the humans standing next to them.

Four posts this week, and between them they answer one question from four directions: now that the agents can write the code, what exactly is left for the rest of us to do?

A short roundup this week, but the two posts pair up better than they have any right to.

This week is all about trust, and who pays for it.

This week the agentic era stopped being a demo.

A week of plumbing, and I mean that as the highest compliment.

Big week in AI land: Anthropic shipped Claude Opus 5, a model that gets uncomfortably close to frontier intelligence at half the price, and published a fascinating look at how their security team defends a codebase where Claude authors 80% of merged code.

This week has a bit of everything: distributed systems war stories from Netflix, a rapid-fire catalogue of Claude Code updates you probably missed, and Anthropic explaining how a million lines of Zig became Rust in under two weeks.

This week is bookended by two very different ways of looking inside an AI system: Google quietly publishing a spec for what your agents should know, and Anthropic publishing a genuinely startling paper about what Claude is thinking but never says out loud.

Up until 2021/22, I was a die-hard Windows user.

If there’s a single thread running through this week, it’s that the interesting action in AI has quietly moved from the model’s weights to the text wrapped around them.

This week is a study in three different answers to the same question: how do you actually get an AI to do things rather than talk about them?

If last week was about a frontier model launching and getting yanked off the shelves inside 72 hours, this week is the quieter, more useful sequel: how we actually steer, evaluate, and live with the agents we already have.

What a week to be paying attention.

This week the conversation grew up.

If there were a theme tying this week together, it would be recursion.

This week’s roundup is dominated by a single seismic event: Andrej Karpathy has joined Anthropic.

This week’s roundup is a masterclass in honest reflection.

This week’s roundup is a love letter to anyone building with AI agents.

This week brings a fascinating collision of big ideas and hard-won lessons.

This week’s roundup spans the full spectrum: from the guts of distributed systems to the soul of AI agent architecture.

This week is all about Anthropic flexing hard.

What a packed week.

What a week.

This week’s roundup lands at the intersection of two themes that keep resurfacing: making AI agents more reliable in production and more useful for people who aren’t experts in the language or framework they need.

This week, it’s all about AI agents growing up: from programmable skills that turn your coding assistant into a full agent platform, to enterprise security stacks that finally make autonomous agents safe for corporate networks.

This week’s roundup is packed, from Andrej Karpathy letting AI agents autonomously run ML experiments on a single GPU to Anthropic making bold moves with both the Claude Marketplace and agentic code review.

This week’s roundup takes us from the depths of Linux kernel lock contention at Netflix to the ambitious vision of federating AI-powered coding agents into a collaborative workforce.

This week’s roundup spans the full spectrum of how AI is reshaping software development, from fine-tuning open-source models with a single English sentence to using Claude as your personal coding instructor.

Welcome back to the Building an Event Management System with Claude Code series!

This week’s roundup is all about the maturing ecosystem of AI-powered software development and the emerging layers being built on top of it.

Week 07 asks the question the entire industry is wrestling with: if AI can write all the code, what’s actually left for us humans?

Welcome back to the Building an Event Management System with Claude Code series!

Week 06 is dominated by Anthropic’s Opus 4.6 launch and its ripple effects: 16 parallel agents autonomously building a 100,000-line C compiler that can compile the Linux kernel, a 1M-token context window that actually works, and Agent Teams turning Claude…

Week 05 delivers a fascinating collision between AI’s transformative potential and its sobering risks.

Welcome back to the Building an Event Management System with Claude Code series!

This week’s roundup dives deep into the evolving relationship between developers and AI coding assistants, from Armin Ronacher’s thought-provoking “agent psychosis” concept exploring our growing dependence on AI companions to Anthropic’s newly revamped co…

Welcome back to the Building an Event Management System with Claude Code series!

Week 03 kicks off 2026 with laser focus on making AI agents production-ready for team environments, from Joe Njenga’s battle-tested playbook for transforming Claude Code into a full-team productivity system to Anthropic’s strategic expansion of Claude Cod…

Welcome back to the Building an Event Management System with Claude Code series!

Welcome back to the Building an Event Management System with Claude Code series!

Welcome to an unplanned post in the Building an Event Management System with Claude Code series.

Welcome to the first tech roundup of 2026, where AI agents finally learned to speak UI instead of drowning us in conversational ping-pong, and autonomous coding tools decided sleep is optional.

Welcome back to the Building an Event Management System with Claude Code series!

Welcome back to the Building an Event Management System with Claude Code series!

Welcome back to Building an Event Management System with Claude Code blog post series!

Welcome to the final roundup of 2025!